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Pseudorapidity distributions of charged particles in pp(), p(d)A and AA collisions using Tsallis thermodynamics J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210907
J Q Tao, M Wang, H Zheng, W C Zhang, L L Zhu, A BonaseraThe pseudorapidity distributions of charged particles measured in p + p() collisions for energies ranging from GeV to 13 TeV and A + A collisions at RHIC and LHC are investigated in the fireball model with Tsallis thermodynamics. We assume that the rapidity axis is populated with fireballs following qGaussian distribution and the charged particles follow the Tsallis distribution in the fireball. We

Analysis of strongly intensive quantities for eventbyevent transverse momentum and multiplicity fluctuations using the AMPT model J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210907
Xiaochao Wu, Yanyu Ren, Jingbo Zhang, Zhenyu Xu, Donghai Wei, Liming Hua, Chunhui Zhang, Lei HuoStrongly intensive quantities Σ[P T , N] and Δ[P T , N] have become one of the important tools in study of phase transitions and critical points in high energy heavyion collisions. In this paper the properties of Σ[P T , N] and Δ[P T , N] are discussed within different colliding nuclei systems generated by the AMPT model. The combined event method are proposed to simulate the model of independent

Production of GeVscale heavy neutral leptons in threebody decays. Comparison with the PYTHIA approach J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210824
V M Gorkavenko, Yu R Borysenkova, M S TsarenkovaDespite the undeniable success of the standard model of particle physics (SM), there are some phenomena that the SM cannot explain. These phenomena indicate that the SM has to be modified. One of the possible ways to extend the SM is to introduce heavy neutral leptons (HNLs). To search for HNLs in intensity Frontier experiments, one has to consider HNL production both in twobody and threebody decays

Benchmarking angularmomentum projected Hartree–Fock as an approximation J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210819
Stephanie M Lauber, Hayden C Frye, Calvin W JohnsonWe benchmark angularmomentum projectedaftervariation Hartree–Fock calculations as an approximation to full configurationinteraction results in a shell model basis. For such a simple approximation we find reasonably good agreement between excitation spectra, including for many oddA and odd–odd nuclides. We frequently find shape coexistence, in the form of multiple Hartree–Fock minima; mixing in

Theoretical calculations of the nuclear deformation effects on αdecay halflives for heavy and superheavy nuclei J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210819
Shihui Cheng, Zhishuai Ge, Ligang Cao, FengShou Zhangαdecay halflives of heavy and superheavy even–even nuclei, in the range of Z = 80–118, were studied using an improved generalized liquid drop model, in which the deformation effects of both the parent and daughter nuclei are considered. The calculated values reflect a better accuracy of the agreement when compared with the experimental data of known nuclei from Hg to Og. The corresponding standard

Nonlinear optical effects in a nucleus J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210819
Tao Li, Xu WangIntense laser technologies generate light with unprecedented and growing intensities. The possibility emerges that a nucleus responds nonlinearly to an intense light field, pointing to an emerging research area of nuclear nonlinear optics. Here we consider twophoton and threephoton absorption (with subsequent disintegration) processes of the deuteron, the simplest and the most fundamental nontrivial

From Peccei Quinn symmetry to mass hierarchy problem J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210818
Y A Garnica, S F Mantilla, R MartinezWe propose a nonuniversal U(1) X gauge extension to the standard model (SM) and an additional Peccei–Quinn (PQ) global symmetry to study the mass hierarchy and strong CP problem. The scheme allows us to distinguish among fermion families and to generate the fermionic mass spectrum of particles of the SM. The symmetry breaking is performed by two scalar Higgs doublets and two scalar Higgs singlets

Investigating heavyflavor vs lightflavor puzzle with event topology and multiplicity in proton + proton collisions at = 13 TeV using PYTHIA8 J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210812
Suman Deb, Raghunath Sahoo, Dhananjaya Thakur, Sushanta Tripathy, Arvind KhuntiaHeavyflavored hadrons are unique probes to study the properties of hot and dense quantum chromodynamics medium produced in ultrarelativistic heavyion collisions at RHIC and the LHC. Transverse spherocity is one of the eventtopology variables used to separate jetty and isotropic events from the pool of event samples. This study aims to understand the production dynamics of heavyflavors through

Identified particle spectra in Pb–Pb, Xe–Xe and p–Pb collisions with the Tsallis blastwave model J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210809
Guorong Che, Jinbiao Gu, Wenchao Zhang, Hua ZhengWe investigate the hadron transverse momentum (p T) spectra in Pb–Pb (Pb–Pb, Xe–Xe, p–Pb) collisions at 2.76 (5.02, 5.44, 5.02) TeV in the framework of the Tsallis blast wave model with a linear transverse velocity profile and a constant velocity profile. In this model, the Tsallis temperature (T), the average radial flow velocity (⟨β⟩) and the degree of nonequilibrium (q) of the system are common

Perturbative correction to the adiabatic approximation for (d, p) reactions J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210809
L Moschini, N K Timofeyuk, R C JohnsonThe adiabatic distorted wave approximation (ADWA) is widely used by the nuclear community to analyse deuteron stripping (d, p) experiments. It provides a quick way to take into account an important property of the reaction mechanism: deuteron breakup. In this work we provide a numerical quantification of a perturbative correction to this theory, recently proposed in Johnson (2014 J. Phys. G: Nucl.

Eccentricities, fluctuations and Adependence of elliptic and triangular flows in heavyion collisions J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210809
G Kh Eyyubova, V L Korotkikh, A M Snigirev, E E ZabrodinA simple geometrical model with eventbyevent fluctuations is suggested to study elliptical and triangular eccentricities in the initial state of relativistic heavyion collisions. This model describes rather well the ALICE and ATLAS data for Pb + Pb collisions at centerofmass energy TeV per nucleon pair, assuming that the second, v 2, and third, v 3, harmonics of the anisotropic flow are simply

Sensitivities to secret neutrino interaction at FASERν J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210809
Majid Bahraminasr, Pouya Bakhti, Meshkat RajaeeWe study the impact of the coupling of neutrinos with a new light neutral gauge boson, Z′, with a mass of less than 500MeV in FASERν experiment. Scenarios in which a light gauge boson is coupled to neutrinos are motivated within numerous contexts which are designed to explain various anomalies in particle physics and cosmology. This interaction leads to a new decay mode for charged mesons to a light

New scalar resonance X 0(2900) as a molecule: mass and width J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210715
S S Agaev, K Azizi, H SunduWe explore features of the scalar structure X 0(2900), which is one of the two resonances discovered recently by LHCb in the D − K + invariant mass distribution in the decay B + → D + D − K +. We treat X 0(2900) as a hadronic molecule composed of the conventional mesons and K ∗0 and calculate its mass, coupling and width. The mass and coupling of X 0(2900) are determined using the QCD twopoint sum

Extraction of the multiplicity dependence of multiparton interactions from LHC pp data using machine learning techniques J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210714
Antonio Ortiz, Erik A ZepedaOver the last years, machine learning (ML) methods have been successfully applied to a wealth of problems in highenergy physics. For instance, in a previous work we have reported that using ML techniques one can extract the multiparton interactions (MPI) activity from minimumbias pp data. Using the available large hadron collider data on transverse momentum spectra as a function of multiplicity,

Schematic SO(4) model for the description of hadrons J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210714
U I RamirezSoto, O A RicoTrejo, T YpezMartnez, P O Hess, A Weber, O CivitareseAn algebraic model is proposed which simulates the strong interaction between quarks, for the description of hadron states. The model is based on the SO(4)group. The effects of the longrange quark–quark interactions, like zerocolor confined states, symmetries and energy dependence, required for a correct description of hadrons at low energy, are considered through the assignment of SO(4)quantum

Reply to Comment on ‘Detail study of application of the relativistic meanfield effective NN forces for heavyion fusion within a dynamical model’ J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210713
M V Chushnyakova, I I Gontchar, N A KhmyrovaOur recent paper (Chushnyakova etal 2021 J. Phys. G: Nucl. Part. Phys. 48 015101), where we implemented the effective relativistic meanfield NN forces into the trajectory model with surface friction to calculate the fusion crosssections, has led to the comments (Bhuyan etal). These authors discuss the relevance of the applied RMF NN forces and several statements made in our paper. We partly agree

Collective states of even–even nuclei in γrigid quadrupole Hamiltonian with minimal length under the sextic potential J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210713
A El Batoul, M Oulne, I TagdamteIn the present paper, we study the collective states of even–even nuclei in γrigid mode within the sextic potential and the minimal length (ML) formalism in Bohr–Mottelson model. The eigenvalues problem for the latter is solved by combined means of quasiexact solvability and a quantum perturbation method. Numerical calculations are performed for 35 nuclei: 98−108Ru, 100−102Mo, 116−130Xe, 180−196Pt

Daejeon16 interaction with contactterm corrections for heavy nuclear systems J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210708
Panagiota Papakonstantinou, James P Vary, Youngman KimThe Daejeon16 twonucleon interaction is employed in manybody approaches based on the meanfield approximation. The perturbative character of Daejeon16 is verified by comparing results for 16O from the Hartree–Fock (HF) approximation and from the nocore shell model and by examining the magnitude of perturbative corrections to the HF energy in light and heavy nuclei. In order to approximately describe

Extended analytical solutions of the Bohr Hamiltonian with the sextic oscillator J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210708
G Lvai, J M AriasLowlying collective quadrupole states in even–even nuclei are studied for the particular case of a γunstable potential within the Bohr Hamiltonian. In particular, the quasiexactly solvable βsextic potential is extended to cover the most relevant part of the lowlying spectra in nuclei. In previous papers (2004 Phys. Rev. C 69 014304, 2010 Phys Rev. C 81 044304), the same situation was solved for

Analytic results for scalarmediated Higgs boson production in association with two jets J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210708
Lucy Budge, John M Campbell, R Keith Ellis, Satyajit SethWe present compact analytic formulae for all oneloop amplitudes representing the production of a Higgs boson in association with two jets, mediated by a colour triplet scalar particle. Many of the integral coefficients present for scalar mediators are identical to the case when a massive fermion circulates in the loop, reflecting a close relationship between the two theories. The calculation is used

Production of the axionlike particles on electron–nucleus and ultraperipheral heavy ion collisions J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210708
C P Oliveira, D Hadjimichef, M V T MachadoThe photoproduction of axionlike particles (ALPs) is investigated in electron–ion (EIC) and ultraperipheral heavy ion collisions (UPCs) considering the Primakoff production from a nucleus and effective Lagrangian for ALP coupling to photons. The model is employed to calculate the integrated cross section and event numbers as a function of the ALP mass and axionphoton coupling. Predictions are shown

Implications of new physics in B → K 1 μ + μ − decay processes J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210705
Aishwarya Bhatta, Rukmani MohantaRecently, several discrepancies at the level of (2–3)σ have been observed in the decay processes mediated by flavour changing neutral current (FCNC) transitions b → sℓ + ℓ −, which may be considered as the smokinggun signal of new physics (NP). These intriguing hints of NP have attracted a lot of attention and many attempts are being made to find the possible NP signature in other related processes

Capitalizing on nuclear data libraries’ comprehensiveness to obtain solar system rprocess abundances J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210701
Boris PritychenkoThe recent observation of neutron stars merger by the laser interferometer gravitationalwave observatory collaboration and the measurements of the event’s electromagnetic spectrum as a function of time for different wavelengths have altered profoundly our understanding of the rprocess site as well as considerably energized nuclear astrophysics research efforts. Rprocess abundances are a key element

Explicit parity violation inSU(2)L⊗ SU(2)R⊗ U(1)B−L models J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210701
Henry Diaz, E CastilloRuiz, O Pereyra Ravinez, V PleitezHere, we propose models with SU(2)L ⊗ SU(2)R ⊗ U(1)B−L electroweak gauge symmetry, in which parity (or charge conjugation) is explicitly broken and the interactions of left and righthanded fermions are completely different from each other at any energy scale. In this type of model, there is no restoration of parity at high energies. However, as in all leftright symmetric models, the electroweak

Hadron–quark phase transition in the context of GW190814 J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210629
Ishfaq A Rather, A A Usmani, S K PatraThe properties of neutron stars are calculated for hadronic matter within the densitydependent relativistic meanfield model (DDRMF). The phase transition to quark matter is studied and the hybrid star matter properties are systematically calculated using the vectorenhanced bag model. The maximum mass of a neutron star with DDLZ1 and DDRMF parameter sets is found to be around 2.55M ⊙ for the pure

New experimental limits on doublebeta decay of osmium J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210624
P Belli, R Bernabei, F Cappella, V Caracciolo, R Cerulli, F A Danevich, A Incicchitti, D V Kasperovych, V V Kobychev, G P Kovtun, N G Kovtun, M Laubenstein, V Merlo, D V Poda, O G Polischuk, A P Shcherban, S Tessalina, V I TretyakDoublebeta processes in 184Os and 192Os were searched for over 15 851 h at the Gran Sasso National Laboratory (LNGS) of the I.N.F.N. by using a 118g ultrapure osmium sample installed on the endcap of a 112 cm3 ultralowbackground broadenergy germanium detector. New limits on doubleelectron capture and electron capture with positron emission in 184Os were set at the level of lim T 1/2 ∼ 1016–1017

Inclusive jet and dijet productions usingk t and (z, k t )factorizations versus ZEUS collaboration data J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210624
R Kord Valeshabadi, M Modarres, S Rezaie, R Aminzadeh NikIn this paper, we investigate the differential crosssections of the inclusive jet and dijet productions of the ZEUS collaboration data at the centerofmass energies of ∼300GeV and 319GeV using the k t and (z, k t )factorizations with the different unintegrated and doubleunintegrated partondistribution functions (UPDFs and DUPDFs), respectively. The KaTie event generator is used to calculate the

Multiplicity distribution in pseudorapidity windows and charge conservation J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210624
Naomichi Suzuki, Minoru Biyajima, Takuya MizoguchiCharged multiplicity distribution (MD) in a pseudorapidity window is formulated under the assumption that the charge conservation is satisfied in full phase space. At first, we analyze measured charged particle MDs in pseudorapidity windows in the LHC experiments by the CMS and ALICE collaborations with the two probability distributions. One is the convolution of negative binomial and Poisson distributions

Investigation of the nuclear liquidgas phase transition in the static AMD J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210622
W Lin, P Ren, X Liu, H Zheng, M Huang, G Qu, R WadaNuclear liquidgas phase transitions are investigated in the framework of static antisymmetrized molecular dynamics (static AMD) model under either a constant volume or a constant pressure. A deuteron quadrupole momentum fluctuation thermometer is applied to extract the temperature of fragmenting systems of 36Ar and 100Sn. A plateau structure of caloric curves is observed under a constant volume for

Analytic continuation of nucleon electromagnetic form factors in the timelike region J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210622
Pedro Alberto, Alessandro Drago, Alessio Mangoni, Simone Moretti, Simone PacettiThe possibility to compute nucleon electromagnetic form factors in the timelike region by analytic continuation of their spacelike expressions, obtained in the framework of a generic model of nucleons, has been explored. We have developed a procedure to analytically solve Fourier transforms of the nucleon electromagnetic current and hence to obtain form factors defined in all kinematic regions and

Enhanced violation of Leggett–Garg inequality in three flavour neutrino oscillations via nonstandard interactions J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210622
Sheeba Shafaq, Poonam MehtaNeutrino oscillations occur due to nonzero masses and mixings and most importantly they are believed to maintain quantum coherence even over astrophysical length scales. In the present study, we explore the quantumness of three flavour neutrino oscillations by studying the extent of violation of Leggett–Garg inequalities (LGI) if nonstandard interactions (NSI) are taken into account. We report an

Extrapolating from neural network models: a cautionary tale J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210622
A Pastore, M CarniniWe present three different methods to estimate error bars on the predictions made using a neural network (NN). All of them represent lower bounds for the extrapolation errors. At first, we illustrate the methods through a simple toy model, then, we apply them to some realistic case related to nuclear masses. By using theoretical data simulated either with a liquiddrop model or a Skyrme energy density

Threebody calculation of coherent π 0 photoproduction on the deuteron in the Δ region J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210618
O Kolesnikov, A FixWe consider the discrepancies between the experimental data and the threebody calculations of the total cross section for γd → π 0 d. It is shown that additional static ΔN interaction slightly improves the description but its effect is insufficient to explain the disagreement.

Particle yields in pp interactions at GeV interpreted in the statistical hadronization model J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210618
Tomasz Matulewicz, Krzysztof PiaseckiFollowing the recent measurement of several hadron yields by NA61/SHINE collaboration, the unified set of yields of particles produced in proton–proton collisions at = 17.3 GeV (laboratory beam momentum 158 GeV/c) is evaluated, combining the results of the NA49 and NA61/SHINE collaborations at the CERN SPS. With the statistical hadronization code ThermalFist we confirm the unacceptably high value

Vacuum stability in BLSSM J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210618
Ben Yan, TaiFu Feng, ShuMin Zhao, HaiBin Zhang, JinLei YangBL supersymmetric standard model (BLSSM) is the U(1) extension of the minimal supersymmetric standard model (MSSM). Comparing with MSSM, BLSSM has several advantages. The vacuum stability is a very important problem. The Higgs superfields in BLSSM are more than those in the MSSM. It is interesting to study the vacuum stability in the BLSSM. The oneloop effective potential and twoloop renormalization

Studying radiative baryon decays with the SU(3) flavor symmetry J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210618
RuMin Wang, XiaoDong Cheng, YingYing Fan, JieLei Zhang, YuanGuo XuThe weak and electromagnetic radiative baryon decays of octet T 8, decuplet T 10, single charmed antitriplet T c3 and sextet T c6, and single heavy bottomed antitriplet T b3 and sextet T b6 are investigated by using the SU(3) flavor symmetry irreducible representation approach. We analyze the contributions from a single quark transition q 1 → q 2 γ and the W exchange transitions and find that the amplitudes

New highsensitivity searches for neutrons converting into antineutrons and/or sterile neutrons at the HIBEAM/NNBAR experiment at the European Spallation Source J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210615
A Addazi, K Anderson, S Ansell, K S Babu, J L Barrow, D V Baxter, P M Bentley, Z Berezhiani, R Bevilacqua, R Biondi, C Bohm, G Brooijmans, L J Broussard, J Cedercll, C Crawford, P S B Dev, D D DiJulio, A D Dolgov, K Dunne, P Fierlinger, M R Fitzsimmons, A Fomin, M J Frost, S Gardiner, S Gardner, A GalindoUribarri, P Geltenbort, S Girmohanta, P Golubev, E Golubeva, G L Greene, T Greenshaw, V GudkovThe violation of baryon number, , is an essential ingredient for the preferential creation of matter over antimatter needed to account for the observed baryon asymmetry in the Universe. However, such a process has yet to be experimentally observed. The HIBEAM/NNBAR program is a proposed twostage experiment at the European Spallation Source to search for baryon number violation. The program will include

Nature of potential families from elastic 16O + 16O rainbow scatteringDedicated to the loving memories of F Bary Malik for inspiring us to use NM potentials; and Devika Basak, who was not only the loving wife of our group leader (AKB), but a source of extraordinary care, affection and inspiration for all his students and colleagues, sadly leaving us on 18 November 2020, just weeks before this article J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210611
M Sujan Islam, R A Ramon, M Mizanur Rahman, R Majumder, M A Sayed, A Nilima, M M B Azad, A S B Tariq, M A Uddin, A K BasakThe experimental differential crosssections of 16O + 16O elastic scattering in the energy range 75MeV ⩽ E lab ⩽ 1120 MeV are analysed using families of nonmonotonic (NM) shallow nucleus–nucleus potential in the framework of the optical model. The experimental data is reproduced successfully using six families of NM potentials. It is found that all families converge at 350MeV. The clear indication

Effect of the uncertainty in the hadronic interaction models on the estimation of the sensitivity of the Cherenkov telescope array J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210610
Michiko Ohishi, Luan Arbeletche, Vitor de Souza, Gernot Maier, Konrad Bernlhr, Abelardo Moralejo Olaizola, Johan Bregeon, Luisa Arrabito, Takanori YoshikoshiImaging atmospheric Cherenkov telescopes (IACTs) are groundbased indirect detectors for cosmic gamma rays with energies above tens of GeV. The major backgrounds for gammaray observations in IACTs are cosmicray charged particles. The capability to reject these backgrounds is the most important factor determining the gammaray sensitivity of IACT systems. Monte Carlo simulations are used to estimate

An evidence of triple kinetic freezeout scenario observed in all centrality intervals in Cu–Cu, Au–Au and Pb–Pb collisions at high energies J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210607
M Waqas, G X Peng, FuHu LiuTransverse momentum spectra of π +, K +, p, , Λ, Ξ or and Ω or or in copper–copper (Cu–Cu), gold–gold (Au–Au) and lead–lead (Pb–Pb) collisions at 200 GeV, 62.4 GeV and 2.76 TeV respectively, are analyzed in different centrality bins by the blast wave model with Tsallis statistics. The model results are approximately in agreement with the experimental data measured by BRAHMS, STAR and ALICE Collaborations

Investigating the effects of U 1 vector leptoquark on mediated B decays J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210607
Suman Kumbhakar, Rukmani MohantaThe recent measurements of lepton flavor universality (LFU) violating observables in semileptonic and b → sℓ + ℓ − transitions by various experiments hint towards the possible role of new physics (NP) in and b → sμ + μ − decay channels. This in turn suggests that the same class of NP as appeared in , might also show up in other tree level processes involving transition. In this paper, we study the

Survey of texture zeros with light Dirac neutrinos J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210607
Happy Borgohain, Debasish BorahWe classify all possible texture zeros in a light neutrino mass matrix in a diagonal charged lepton basis by considering the Dirac nature of light neutrinos. For the Hermitian nature of neutrino mass matrix, the number of possible texture zeros remain the same as Majorana texture zeros, but with less free parameters due to the absence of additional Majorana CP phases. Relaxing the Hermitian nature

Influence of magnetic fields on the stability and the phase transition of quark matter in the Nambu–Jona–Lasinio model J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210607
ShouZheng Su, XinJian WenIn the presence of the external magnetic fields, we investigate the stability of quark matter as well as the phase transition in the framework of two flavor Nambu–Jona–Lasinio model. The investigation focuses on the magnetic effects with the fixed coupling constant and the running coupling constant G(B, T) depending on both magnetic field and temperature. The dynamical quark mass can be increased by

Revealing the structure of light pseudoscalar mesons at the electron–ion collider J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210525
J Arrington, C Ayerbe Gayoso, P C Barry, V Berdnikov, D Binosi, L Chang, M Diefenthaler, M Ding, R Ent, T Frederico, Y Furletova, T J Hobbs, T Horn, G M Huber, S J D Kay, C Keppel, HW Lin, C Mezrag, R Montgomery, I L Pegg, K Raya, P Reimer, D G Richards, C D Roberts, J RodrguezQuintero, D Romanov, G Salm, N Sato, J Segovia, P Stepanov, A S Tadepalli, R L TrottaThe questions of how the bulk of the Universe’s visible mass emerges and how it is manifest in the existence and properties of hadrons are profound, and probe the heart of strongly interacting matter. Paradoxically, the lightest pseudoscalar mesons appear to be key to a further understanding of the emergent mass and structure mechanisms. These mesons, namely, the pion and kaon, are the Nambu–Goldstone

Measurement of fission excitation function for 19F + 194, 196, 198Pt reactions J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210521
Varinderjit Singh, B R Behera, Maninder Kaur, A Jhingan, Rupinder Kaur, P Sugathan, Davinder Siwal, S Goyal, K P Singh, Santanu Pal, A Saxena, S KailasExperimental fission crosssections are reported for the 19F + 194,196,198Pt reactions populating an isotopic chain of compound nuclei comprising both closed and nonclosed shell nuclei. The fission crosssections are obtained at near and above Coulomb barrier energies by measuring fission fragment angular distributions. The present work aims to estimate nuclear dissipation and find its isotopic and

Prediction of halflives of even–even superheavy nuclei J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210521
Deepika Pathak, Navdeep Singh, Harjeet Kaur, Sudhir R Jainαdecay halflives (values) of even–even and superheavy nuclei (SHN) are determined employing interaction potential involving Coulomb and proximity potentials. The obtained results are compared with the experimental ones and to assess the precision of the present model in reproducing the experimental halflives, a comparison is drawn with the other methods as well. We require disintegration energy

First antineutrino energy spectrum from 235U fissions with the STEREO detector at ILL Stereo Collaboration, http://www.stereoexperiment.org. J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210520
H Almazn, L Bernard, A Blanchet, A Bonhomme, C Buck, P del Amo Sanchez, I El Atmani, L Labit, J Lamblin, A Letourneau, D Lhuillier, M Licciardi, M Lindner, T Materna, H Pessard, JS Ral, JS Ricol, C Roca, R Rogly, T Salagnac, V Savu, S Schoppmann, V Sergeyeva, T Soldner, A Stutz, M VialatThis article reports the measurement of the 235Uinduced antineutrino spectrum shape by the Stereo experiment. 43 000 antineutrinos have been detected at about 10m from the highly enriched core of the ILL reactor during 118 full days equivalent at nominal power. The measured inverse beta decay spectrum is unfolded to provide a pure 235U spectrum in antineutrino energy. A careful study of the unfolding

The kinks in charge radii across N = 82 and 126 revisited J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210520
M Bhuyan, B Maheshwari, H A Kassim, N Yusof, S K Patra, B V Carlson, P D StevensonWe revisit the studies of the isotopic shift in the charge radii of even–even isotopes of Sn and Pb nuclei at N = 82, and 126, respectively, within the relativistic meanfield (RMF) and relativisticHartree–Bogoliubov (RHB) approach. The shell model is also used to estimate isotopic shift in these nuclei, for the first time, to the best of our knowledge. The ground state singleparticle energies (SPEs)

Rotational bands beyond the Elliott model J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210520
Ryan Zbikowski, Calvin W Johnson, Anna E McCoy, Mark A Caprio, Patrick J FasanoRotational bands are commonplace in the spectra of atomic nuclei. Inspired by early descriptions of these bands by quadrupole deformations of a liquid drop, Elliott constructed discrete nucleon representations of SU(3) from fermionic creation and annihilation operators. Ever since, Elliott’s model has been foundational to descriptions of rotation in nuclei. Later work, however, suggested the symplectic

Nucleon scattering analysis with a laneconsistent dispersive optical potential for Hf, W and Ta isotopes J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210520
Xiuniao Zhao, Weili Sun, E Sh Soukhovitskiĩ, D S Martyanov, J M Quesada, R CapoteNucleon scattering on tungsten and neighboring nuclei are analyzed with a coupledchannels method based on a softrotator structure model. The multiple band couplings and nuclear stretching factors are built using nuclear wave functions of the softrotator model with the Hamiltonian parameters adjusted to reproduce the energy of lowlying collective levels of corresponding nuclei. A regional laneconsistent

Scalar dark matter, neutrino mass and leptogenesis in a U(1) B−L model J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210520
Subhasmita Mishra, Shivaramakrishna Singirala, Suchismita SahooWe investigate the phenomenology of singlet scalar dark matter (DM) in a simple U(1) B−L gauge extension of the standard model, made anomalyfree with four exotic fermions. The enriched scalar sector and the new gauge boson Z′, associated with U(1) gauge extension, connect the dark sector to the visible sector. We compute relic density, consistent with Planck limit and a Z′ mediated DMnucleon cross

Flavor, temperature and magnetic field dependence of the QCD phase diagram: magnetic catalysis and its inverse J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210520
Aftab Ahmad, Adnan Bashir, Marco A Bedolla, J J CobosMartnezWe study dynamical chiral symmetry breaking for quarks in the fundamental representation of SU(N c) for the N f number of light quark flavors. We also investigate the phase diagram of quantum chromodynamics at finite temperature T and/or in the presence of a constant external magnetic field eB. The unified formalism for this analysis is provided by a symmetrypreserving Schwinger–Dyson equation treatment

Isospin effects on the chiral phase transition J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210520
ShuSheng XuWe discuss the chiral and pionsuperfluidity phase transitions at finite isospin chemical potential within the framework of Dyson–Schwinger equations. With the help of the quark scalar and pseudoscalar condensates, which are widely accepted as order parameters of chiral and pionsuperfluidity phase transitions respectively, we show that there is a secondorder phase transition at isospin chemical

Future physics perspectives on the equation of state from heavy ion collisions to neutron stars J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210520
V Dexheimer, J Noronha, J NoronhaHostler, N Yunes, C RattiWith the computational power and algorithmic improvements available today, the ongoing STAR/RHIC and HADES/GSI experiments, the future FAIR and NICA facilities becoming operational, and the new precise measurements from NICER and LIGO/VIRGO, the highenergy nuclear physics and astrophysics communities are in the unique position to set very stringent constraints on the equation of state of strongly

Get on the BAND Wagon: a Bayesian framework for quantifying model uncertainties in nuclear dynamics J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210520
D R Phillips, R J Furnstahl, U Heinz, T Maiti, W Nazarewicz, F M Nunes, M Plumlee, M T Pratola, S Pratt, F G Viens, S M WildWe describe the Bayesian analysis of nuclear dynamics (BAND) framework, a cyberinfrastructure that we are developing which will unify the treatment of nuclear models, experimental data, and associated uncertainties. We overview the statistical principles and nuclearphysics contexts underlying the BAND toolset, with an emphasis on Bayesian methodology’s ability to leverage insights from multiple models

The mysterious bursts observed by telescope array and axion quark nuggets J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210429
Ariel ZhitnitskyTelescope array (TA) experiment has recorded [1, 2] several short time bursts of air shower like events. These bursts are very distinct from conventional cosmic ray single showers, and are found to be strongly correlated with lightnings. We propose that these bursts represent the direct manifestation of the dark matter annihilation events within the socalled axion quark nugget (AQN) model, which was

IceCubeGen2: the window to the extreme Universe J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210429
M G Aartsen, R Abbasi, M Ackermann, J Adams, J A Aguilar, M Ahlers, M Ahrens, C Alispach, P Allison, N M Amin, K Andeen, T Anderson, I Ansseau, G Anton, C Argelles, T C Arlen, J Auffenberg, S Axani, H Bagherpour, X Bai, A Balagopal V, A Barbano, I Bartos, B Bastian, V Basu, V Baum, S Baur, R Bay, J J Beatty, KH Becker, J Becker Tjus, S BenZvi, D Berley, E Bernardini, D Z Besson, G Binder, D BindigThe observation of electromagnetic radiation from radio to γray wavelengths has provided a wealth of information about the Universe. However, at PeV (1015 eV) energies and above, most of the Universe is impenetrable to photons. New messengers, namely cosmic neutrinos, are needed to explore the most extreme environments of the Universe where black holes, neutron stars, and stellar explosions transform

Updated analysis of jet quenching at RHIC and LHC within the light cone path integral approach J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210428
B G ZakharovWe present results of a detailed analysis of experimental data on the nuclear modification factor R AA and the flow coefficient v 2 for light hadrons from RHIC for 0.2 TeV Au + Au collisions and from LHC for 2.76 and 5.02 TeV Pb + Pb, and 5.44 TeV Xe + Xe collisions. We perform calculations within the lightcone path integral (LCPI) approach to induced gluon emission. We use running α s which is frozen

The case of equivalence of low and high energy constraints on Regge vector spectrum in AdS/QCD J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210427
S S Afonin, T D SolomkoThe AdS/QCD models are believed to interpolate between low and high energy sectors of QCD. This belief is usually based on observations that many phenomenologically reasonable predictions follow from bounds imposed at high energies although the hypothetical range of applicability of semiclassical bottomup holographic models is restricted by the gauge/gravity duality to low energies where QCD is strongly

In pursuit of new physics with and decays at the highprecision Frontier J. Phys. G Nucl. Partic. Phys. (IF 3.045) Pub Date : 20210427
Marten Z Barel, Kristof De Bruyn, Robert Fleischer, Eleftheria MalamiThe decays and play a key role for the determination of the – (q = d, s) mixing phases ϕ d and ϕ s , respectively. The theoretical precision of the extraction of these quantities is limited by doubly Cabibbosuppressed penguin topologies, which can be included through control channels by means of the SU(3) flavour symmetry of strong interactions. Using the currently available data and a new simultaneous