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  • Direct CP violation in beauty and charm hadron decays
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-06-22
    Ignacio Bediaga; Carla Göbel

    Since the discovery of CP violation more than 5 decades ago, this phenomenon is still attracting a lot of interest. Among the many fascinating aspects of this subject, this review is dedicated to direct CP violation in non-leptonic decays. The advances within the last decade have been enormous, driven by the increasingly large samples of b- and c-hadron decays, and have led to very interesting results

    更新日期:2020-06-23
  • Alternatives to Einstein’s General Relativity Theory
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-06-20
    P.O. Hess

    A Review on attempts to propose alternative theories to the General Relativity is presented. The restriction is on classical models/theories and comprise rather algebraic extensions of the theory of General Relativity. First, possible algebraic extensions of the space–time coordinates and metric extensions are presented, with a discussion of their problems and limits. The pseudo-complex General Relativity

    更新日期:2020-06-23
  • Transverse spin effects in hard semi-inclusive collisions
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-06-16
    M. Anselmino; A. Mukherjee; A. Vossen

    The nucleons (protons and neutrons) are by far the most abundant form of matter in our visible Universe; they are composite particles made of quarks and gluons, the fundamental quanta of Quantum Chromo Dynamics (QCD). The usual interpretation of the nucleon dynamics in high energy interactions is often limited to a simple one-dimensional picture of a fast moving nucleon as a collection of co-linearly

    更新日期:2020-06-16
  • Double beta decay experiments at Canfranc Underground Laboratory
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-06-16
    S. Cebrián

    The first activities of the Canfranc Underground Laboratory (“Laboratorio Subterráneo de Canfanc”, LSC) started in the mid-eighties in a railway tunnel located under the Spanish Pyrenees; since then, it has become an international multidisciplinary facility equipped with different services for underground science. The research activity at LSC is about Astroparticle Physics, dark matter searches and

    更新日期:2020-06-16
  • Novel heavy-quark physics phenomena
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-06-12
    S.J. Brodsky; G.I. Lykasov; A.V. Lipatov; J. Smiesko

    We review the current understanding of heavy quark parton distributions in nucleons and their impact on deep inelastic scattering, collider physics, and other processes at high energies. The determination of the heavy-quark parton distribution functions is particularly significant for the analysis of hard processes at LHC energies, including the forward rapidity high xF domain. The contribution of

    更新日期:2020-06-12
  • Search for neutrino-less double beta decay with thermal detectors
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-06-11
    M. Biassoni; O. Cremonesi

    Neutrino-less double-beta decay (0νββ) is a hypothetical nuclear transition which violates lepton-number conservation and is therefore forbidden by the Standard Model of particle physics. Its observation would unambiguously demonstrate that neutrinos are Majorana particles and would provide unique information about the ordering and absolute scale of neutrino masses. This would have fundamental implications

    更新日期:2020-06-11
  • Heavy flavors under extreme conditions in high energy nuclear collisions
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-06-11
    Jiaxing Zhao; Kai Zhou; Shile Chen; Pengfei Zhuang

    Heavy flavor hadrons have long been considered as a probe of the quark gluon plasma created in high energy nuclear collisions. In this paper we review the heavy flavor properties under extreme conditions and the realization in heavy ion experiments. After a short introduction on heavy flavor properties in vacuum, we emphasize the cold and hot nuclear matter effects on heavy flavors, including shadowing

    更新日期:2020-06-11
  • High-luminosity Large Hadron Collider with laser-cooled isoscalar ion beams
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-05-26
    M.W. Krasny; A. Petrenko; W. Płaczek

    The existing CERN accelerator infrastructure is world unique and its research capacity should be fully exploited. In the coming decade its principal modus operandi will be focused on producing intense proton beams, accelerating and colliding them at the Large Hadron Collider (LHC) with the highest achievable luminosity. This activity should, in our view, be complemented by new initiatives and their

    更新日期:2020-05-26
  • Towards the hadron–quark continuity via a topology change in compact stars
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-05-16
    Yong-Liang Ma; Mannque Rho

    We construct a generalized effective field theory approach to dense compact-star matter that exploits the Cheshire Cat Principle for hadron–quark continuity at high density, adhering only to hadronic degrees of freedom, hidden topology and hidden symmetries of QCD. No Landau–Ginzburg–Wilsonian-type phase transition is involved in the range of densities involved. The microscopic degrees of freedom of

    更新日期:2020-05-16
  • Low energy nuclear physics with active targets and time projection chambers
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-05-15
    D. Bazin; T. Ahn; Y. Ayyad; S. Beceiro-Novo; A.O. Macchiavelli; W. Mittig; J.S. Randhawa

    This article aims at covering various themes that can benefit from taking advantage of active target time projection chambers. They are naturally oriented towards the study of short-lived radioactive nuclei, for which high efficiency and thick targets are necessary to boost the luminosity of the experiments due to the weak intensity of the available beams. The use of active target detectors is particularly

    更新日期:2020-05-15
  • Status of the determination of the electron–neutrino mass
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-05-13
    Amand Faessler

    (1) The classical way to determine the electron anti-neutrino mass is the single Beta Decay of Tritium [3H → 3He + e− + νec] (Particle Physics Booklet, 2014; Aker et al., 2019). This special decay is favored by the small Q-value Q=18.5737 ± 0.00025 keV (Aker et al., 2019). Presently KATRIN (Aker et al., 2019) yields an upper limit of 1.1 eV (90% CL) for the neutrino mass the best result. (2) Electron

    更新日期:2020-05-13
  • Strong coupling constant and quark masses from lattice QCD
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-05-11
    Javad Komijani; Peter Petreczky; Johannes Heinrich Weber

    We review lattice determinations of the charm- and bottom-quark masses and the strong coupling constant obtained by different methods. We explain how effective field theory approaches, such as Non-Relativistic QCD (NRQCD), potential Non-Relativistic QCD (pNRQCD), Heavy Quark Effective Theory (HQET) and Heavy Meson rooted All-Staggered Chiral Perturbation Theory (HMrASχPT) can help in these determinations

    更新日期:2020-05-11
  • Small-scale structure of fuzzy and axion-like dark matter
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-04-08
    Jens C. Niemeyer

    Axion-like particle (ALP) dark matter shows distinctive behavior on scales where wavelike effects dominate over self-gravity. Ultralight axions are candidates for fuzzy dark matter (FDM) whose de Broglie wavelength in virialized halos reaches scales of kiloparsecs. Important features of FDM scenarios are the formation of solitonic halo cores, suppressed small-scale perturbations, and enhanced gravitational

    更新日期:2020-04-08
  • Collision dynamics at medium and relativistic energies
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-03-09
    M. Colonna

    Recent results connected to nuclear collision dynamics, from low up to relativistic energies, are reviewed. Heavy ion reactions offer the unique opportunity to probe the complex nuclear many-body dynamics and to explore, in laboratory experiments, transient states of nuclear matter under several conditions of density, temperature and charge asymmetry. Transport models are an essential tool to undertake

    更新日期:2020-03-09
  • Primordial backgrounds of relic gravitons
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-03-05
    Massimo Giovannini

    The diffuse backgrounds of relic gravitons with frequencies ranging between the aHz band and the GHz region encode the ultimate information on the primeval evolution of the plasma and on the underlying theory of gravity well before the electroweak epoch. While the temperature and polarization anisotropies of the microwave background radiation probe the low-frequency tail of the graviton spectra, during

    更新日期:2020-03-05
  • Precision gravity tests and the Einstein Equivalence Principle
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-03-05
    G.M. Tino; L. Cacciapuoti; S. Capozziello; G. Lambiase; F. Sorrentino

    General Relativity is today the best theory of gravity addressing a wide range of phenomena. Our understanding of physical laws, from cosmology to local scales, cannot be properly formulated without taking into account its concepts, procedures and formalism. It is based on one of the most fundamental principles of Nature, the Equivalence Principle, which represents the core of the Einstein theory of

    更新日期:2020-03-05
  • Hadron Physics at J-PARC
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-03-05
    H. Ohnishi; F. Sakuma; T. Takahashi

    The aim of the hadron physics research programs conducted at J-PARC is to explore the structure of hadronic matter using the world’s highest-intensity meson beams. Since the first beam was extracted at the hadron experimental facility in February 2009, a wide variety of physics experiments have been proposed and performed to address open questions regarding quantum chromodynamics (QCD) at low energy

    更新日期:2020-03-05
  • Lattice QCD Inputs for nuclear double beta decay
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-02-29
    Vincenzo Cirigliano; William Detmold; Amy Nicholson; Phiala Shanahan

    Second order β-decay processes with and without neutrinos in the final state are key probes of nuclear physics and of the nature of neutrinos. Neutrinoful double-β decay is the rarest Standard Model process that has been observed and provides a unique test of the understanding of weak nuclear interactions. Observation of neutrinoless double-β decay would reveal that neutrinos are Majorana fermions

    更新日期:2020-02-29
  • Strangeness in nuclei and neutron stars
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-02-25
    L. Tolos; L. Fabbietti

    We review the present status of the experimental and theoretical developments in the field of strangeness in nuclei and neutron stars. We start by discussing the K̄N interaction, that is governed by the presence of the Λ(1405). We continue by showing the two-pole nature of the Λ(1405), and the production mechanisms in photon-, pion-, kaon-induced reactions as well as proton–proton collisions, while

    更新日期:2020-02-25
  • GAMBIT and its application in the search for physics Beyond the Standard Model
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-02-24
    Anders Kvellestad; Pat Scott; Martin White

    The Global and Modular Beyond-Standard Model Inference Tool (GAMBIT) is an open source software framework for performing global statistical fits of particle physics models, using a wide range of particle and astroparticle data. In this review, we describe the design principles of the package, the statistical and sampling frameworks, the experimental data included, and the first two years of physics

    更新日期:2020-02-24
  • Applications of cosmic-ray muons
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-02-24
    G. Bonomi; P. Checchia; M. D’Errico; D. Pagano; G. Saracino

    Applications of cosmic-ray muons have grown in numbers in the last decades. This was possible thanks to the development of detectors and techniques employed in particle and nuclear physics. Indeed the first famous application, the scanning of the Chephren’s pyramid, was performed by L. W. Alvarez, that was a great expert in particle detectors and indeed was awarded a Nobel prize for his work on the

    更新日期:2020-02-24
  • Nuclear structure studies with re-accelerated beams at REX-and HIE-ISOLDE
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-02-20
    P. Reiter; N. Warr

    Nuclear-structure studies with reaccelerated radioactive ion beams at the ISOLDE facility, CERN commenced with the REX-ISOLDE facility and continued after a major upgrade of the facility with the HIE-ISOLDE post-accelerator. The experiments are based on in-beam high-resolution γ-ray spectroscopy with Miniball, a spectrometer which comprises 24 six-fold segmented, encapsulated high-purity germanium

    更新日期:2020-02-20
  • Light-meson spectroscopy with COMPASS
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-02-11
    B. Ketzer; B. Grube; D. Ryabchikov

    Despite decades of research, we still lack a detailed quantitative understanding of the way quantum chromodynamics (QCD) generates the spectrum of hadrons. Precise experimental studies of the hadron excitation spectrum and the dynamics of hadrons help to improve models and to test effective theories and lattice QCD simulations. In addition, QCD seems to allow hadrons beyond the three-quark and quark–antiquark

    更新日期:2020-02-11
  • Threshold cusps and triangle singularities in hadronic reactions
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-02-05
    Feng-Kun Guo; Xiao-Hai Liu; Shuntaro Sakai

    The spectrum of hadrons is the manifestation of color confinement of quantum chromodynamics. Hadronic resonances correspond to poles of the S-matrix. Since 2003, lots of new hadron resonant structures were discovered in the mass regions from light mesons to hadrons containing a pair of a heavy quark and an antiquark. Many of them are candidates of exotic hadrons, and they are usually observed as peaks

    更新日期:2020-02-05
  • Astronuclear Physics: A tale of the atomic nuclei in the skies
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-02-04
    M. Arnould; S. Goriely

    A century ago, nuclear physics entered astrophysics, giving birth to a new field of science referred to as “Nuclear Astrophysics”. With time, it developed at an impressive pace into a vastly inter- and multidisciplinary field bringing into its wake not only astronomy and cosmology, but also many other sub-fields of physics, especially particle, solid-state and computational physics, as well as chemistry

    更新日期:2020-02-04
  • Cosmic ray detection in space
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-02-03
    Mirko Boezio; Riccardo Munini; Piergiorgio Picozza

    Cosmic rays are energetic particles composed primarily of protons and helium nuclei but including, with varying abundances, all atomic nuclei species, electrons and even antiparticles. They originate from sources that, save for the highest energies, are located in the Galaxy. After more than one century from their discovery and except for a clear contribution, particularly important at energies lower

    更新日期:2020-02-03
  • Emergent gauge symmetries and particle physics
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-01-30
    Steven D. Bass

    Hadron properties and interactions are emergent from QCD. Atomic and condensed matter physics are emergent from QED. Could the local gauge symmetries of particle physics also be emergent? We give an introduction to this question and recent ideas connecting it to the (meta)stability of the Standard Model Higgs vacuum. With an emergent Standard Model the gauge symmetries would “dissolve” in the ultraviolet

    更新日期:2020-01-30
  • Virtual Compton scattering and nucleon generalized polarizabilities
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-01-21
    H. Fonvieille; B. Pasquini; N. Sparveris

    This review gives an update on virtual Compton scattering (VCS) off the nucleon, γ∗N→γN, in the low-energy regime. We recall the theoretical formalism related to the generalized polarizabilities (GPs) and model predictions for these observables. We present the GP extraction methods that are used in the experiments: the approach based on the low-energy theorem for VCS and the formalism of Dispersion

    更新日期:2020-01-21
  • Indirect methods in nuclear astrophysics with relativistic radioactive beams
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2020-01-02
    Thomas Aumann; Carlos A. Bertulani

    Reactions with radioactive nuclear beams at relativistic energies have opened new doors to clarify the mechanisms of stellar evolution and cataclysmic events involving stars and during the big bang epoch. Numerous nuclear reactions of astrophysical interest cannot be assessed directly in laboratory experiments. Ironically, some of the information needed to describe such reactions, at extremely low

    更新日期:2020-01-02
  • Photoproduction reactions and non-strange baryon spectroscopy
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-12-19
    David G. Ireland; Eugene Pasyuk; Igor Strakovsky

    We review the last two decades of using photon beams to measure the production of mesons, and in particular the information that can be obtained on the spectrum of light, non-strange baryons. This is a compendium of experimental results, which should be used as a complement to theoretical reviews of the subject. Lists of data sets are given, together with a comprehensive set of references. An indication

    更新日期:2019-12-19
  • PIC simulation methods for cosmic radiation and plasma instabilities
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-12-12
    M. Pohl; M. Hoshino; J. Niemiec

    Particle acceleration in collisionless plasma systems is a central question in astroplasma and astroparticle physics. The structure of the acceleration regions, electron-ion energy equilibration, preacceleration of particles at shocks to permit further energization by diffusive shock acceleration, require knowledge of the distribution function of particles besides the structure and dynamic of electromagnetic

    更新日期:2019-12-13
  • Exclusive meson photo- and electro-production, a window on the structure of hadronic matter
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-11-14
    J.M. Laget

    At high energy, exclusive meson photo- and electro-production give access to the structure of hadronic matter. At low momentum transfers, the exchange of a few Regge trajectories leads to a comprehensive account of the cross-sections. Among these trajectories, which are related to the mass spectrum of families of mesons, the Pomeron plays an interesting role as it is related to glue-ball excitations

    更新日期:2019-11-14
  • Theory of deuteron stripping and pick-up reactions for nuclear structure studies
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-11-14
    N.K. Timofeyuk, R.C. Johnson

    Deuteron stripping and pick-up experiments - (d,p) and (p,d) - have been used for a long time to study the structure of nuclei. Today these experiments are often carried out in inverse kinematics in state-of-the-art radioactive beams facilities around the world, extending the boundaries of our knowledge of the nuclear chart. The nuclear structure information obtained from these experiments relies entirely

    更新日期:2019-11-14
  • BCS-BEC crossover in cold atomic and in nuclear systems
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-11-14
    Y. Ohashi, H. Tajima, P. van Wyk

    We review the BCS (Bardeen-Cooper-Schrieffer)-BEC (Bose–Einstein condensation) crossover phenomenon discussed in an ultracold Fermi atomic gas and a neutron superfluid in the low-density crust regime of a neutron star. A purpose of this paper to show that these two very different atomic and nuclear systems can be closely related to each other from the viewpoint of this quantum many-body phenomenon

    更新日期:2019-11-14
  • Status of light sterile neutrino searches
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-11-02
    Sebastian Böser, Christian Buck, Carlo Giunti, Julien Lesgourgues, Livia Ludhova, Susanne Mertens, Anne Schukraft, Michael Wurm

    A number of anomalous results in short-baseline oscillation may hint at the existence of one or more light sterile neutrino states in the eV mass range and have triggered a wave of new experimental efforts to search for a definite signature of oscillations between active and sterile neutrino states. The present paper aims to provide a comprehensive review on the status of light sterile neutrino searches

    更新日期:2019-11-04
  • Cluster structure of light nuclei
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-10-23
    R. Bijker, F. Iachello

    We review recent studies of the cluster structure of light nuclei within the framework of the algebraic cluster model (ACM) for nuclei composed of k α-particles and within the framework of the cluster shell model (CSM) for nuclei composed of k α-particles plus x additional nucleons. The calculations, based on symmetry considerations and thus for the most part given in analytic form, are compared with

    更新日期:2019-10-23
  • Coupled-channel approach in hadron–hadron scattering
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-09-14
    J.A. Oller

    Coupled-channel dynamics for scattering and production processes in partial-wave amplitudes is discussed from a perspective that emphasizes unitarity and analyticity. We elaborate on several methods that have driven to important results in hadron physics, either by themselves or in conjunction with effective field theory. We also develop the use of the Lippmann–Schwinger equation in near-threshold

    更新日期:2019-09-14
  • Why is there more matter than antimatter? Calculational methods for leptogenesis and electroweak baryogenesis
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-09-10
    Björn Garbrecht

    We review the production of the matter–antimatter asymmetry in the early Universe, that is baryogenesis, in out-of-equilibrium conditions induced by decays of heavy particles or by the presence of phase boundaries. The most prominent examples are given by leptogenesis and electroweak baryogenesis, respectively. For both cases, we derive the equations that govern the production of the asymmetries. We

    更新日期:2019-09-10
  • Heavy ion charge exchange reactions as probes for nuclear β-decay
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-08-12
    Horst Lenske, Francesco Cappuzzello, Manuela Cavallaro, Maria Colonna

    The status and prospects of heavy ion charge exchange reactions are reviewed. Their important role for nuclear reaction, nuclear structure, and beta-decay investigations is emphasized. Dealing with peripheral reactions, direct reaction theory gives at hand the proper methods for single (SCE) and double charge exchange (DCE) ion–ion scattering. The microscopic descriptions of charge exchange ion–ion

    更新日期:2019-08-12
  • Hadron matter in neutron stars in view of gravitational wave observations
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-08-07
    Felipe J. Llanes-Estrada, Eva Lope-Oter

    In this review we highlight a few physical properties of neutron stars and their theoretical treatment inasmuch as they can be useful for nuclear and particle physicists concerned with matter at finite density (and newly, temperature). Conversely, we lay out some of the hadron physics necessary to test General Relativity with binary mergers including at least one neutron star, in view of the event

    更新日期:2019-08-07
  • Gravitational waves from neutron star mergers and their relation to the nuclear equation of state
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-08-02
    Luca Baiotti

    In this article, I introduce ideas and techniques to extract information about the equation of state of matter at very high densities from gravitational waves emitted before, during and after the merger of binary neutron stars. I also review current work and results on the actual use of the first gravitational-wave observation of a neutron-star merger to set constraints on properties of such equation

    更新日期:2019-08-02
  • Experimental aspects of geoneutrino detection: Status and perspectives
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-08-01
    O. Smirnov

    Neutrino geophysics, the study of the Earth’s interior by measuring the fluxes of geologically produced neutrino at its surface, is a new interdisciplinary field of science, rapidly developing as a synergy between geology, geophysics and particle physics. Geoneutrinos, antineutrinos from long-lived natural isotopes responsible for the radiogenic heat flux, provide valuable information for the chemical

    更新日期:2019-08-01
  • Towards an ab initio covariant density functional theory for nuclear structure
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-08-01
    Shihang Shen, Haozhao Liang, Wen Hui Long, Jie Meng, Peter Ring

    Nuclear structure models built from phenomenological mean fields, the effective nucleon–nucleon interactions (or Lagrangians), and the realistic bare nucleon–nucleon interactions are reviewed. The success of covariant density functional theory (CDFT) to describe nuclear properties and its influence on Brueckner theory within the relativistic framework are focused upon. The challenges and ambiguities

    更新日期:2019-08-01
  • Spallation, cosmic rays, meteorites, and planetology
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-07-29
    J.-C. David, I. Leya

    In this review article we present some of the major applications for cosmogenic nuclide studies; extraterrestrial applications on meteorites, lunar surface samples but also on interstellar grains and terrestrial applications ranging from ages for exposure and burial over erosion and denudation rates to uplift and soil dynamics. For all the applications a good knowledge of the cosmogenic nuclide production

    更新日期:2019-07-29
  • Cosmic ray models
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-07-24
    M. Kachelrieß, D.V. Semikoz

    We review progress in high-energy cosmic ray physics focusing on recent experimental results and models developed for their interpretation. Emphasis is put on the propagation of charged cosmic rays, covering the whole range from ∼(20–50) GV, i.e. the rigidity when solar modulations can be neglected, up to the highest energies observed. We discuss models aiming to explain the anomalies in Galactic cosmic

    更新日期:2019-07-24
  • Relativistic hydrodynamics for spin-polarized fluids
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-07-24
    Wojciech Florkowski, Avdhesh Kumar, Radoslaw Ryblewski

    Recent progress in the formulation of relativistic hydrodynamics for particles with spin one-half is reviewed. We start with general arguments advising introduction of a tensor spin chemical potential that plays a role of the Lagrange multiplier coupled to the spin angular momentum. Then, we turn to a discussion of spin-dependent distribution functions that have been recently proposed to construct

    更新日期:2019-07-24
  • Interplay of neutron–proton equilibration and nuclear dynamics
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-06-13
    Alan B. McIntosh, Sherry J. Yennello

    Neutron–proton equilibration in heavy-ion collisions proceeds atop a landscape of deformed topography and large density changes. The rapidly-varying landscape is created by the collision dynamics. The collision dynamics influences the neutron–proton equilibration, but just as importantly the different migration of the protons and neutrons influences the dynamics. To fully appreciate either the reaction

    更新日期:2019-06-13
  • Measurements of multi vector boson production processes at the LHC
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-06-10
    A. Oh

    Standard model processes with multi-boson final states provide a unique testing ground for the electroweak sector of the standard model and allow to set limits on generic model extensions to constrain the scale of new particles and interactions. The experiments at the Large Hadron Collider at CERN followed a comprehensive programme to determine the properties of many accessible multi-boson processes

    更新日期:2019-06-10
  • The QCD renormalization group equation and the elimination of fixed-order scheme-and-scale ambiguities using the principle of maximum conformality
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-05-27
    Xing-Gang Wu, Jian-Ming Shen, Bo-Lun Du, Xu-Dong Huang, Sheng-Quan Wang, Stanley J. Brodsky

    The conventional scale setting approach to fixed-order perturbative QCD (pQCD) predictions is based on a guessed renormalization scale, usually taking as the one to eliminate the large log-terms of the pQCD series, together with an arbitrary range to estimate its uncertainty. This ad hoc assignment of the renormalization scale causes the coefficients of the QCD running coupling at each perturbative

    更新日期:2019-05-27
  • Experimental searches for the chiral magnetic effect in heavy-ion collisions
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-05-22
    Jie Zhao, Fuqiang Wang

    The chiral magnetic effect (CME) in quantum chromodynamics (QCD) refers to a charge separation (an electric current) of chirality imbalanced quarks generated along an external strong magnetic field. The chirality imbalance results from interactions of quarks, under the approximate chiral symmetry restoration, with metastable local domains of gluon fields of non-zero topological charges out of QCD vacuum

    更新日期:2019-05-22
  • Majorana fermions in magnetic chains
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-05-22
    Rémy Pawlak, Silas Hoffman, Jelena Klinovaja, Daniel Loss, Ernst Meyer

    Majorana fermions have recently garnered a great attention outside the field of particle physics, in condensed matter physics. In contrast to their particle physics counterparts, Majorana fermions are zero energy, chargeless, spinless, composite quasiparticles, residing at the boundaries of so-called topological superconductors. Furthermore, in opposition to any particles in the standard model, Majorana

    更新日期:2019-05-22
  • The hadronic light-by-light contribution to the muon’s anomalous magnetic moment
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-05-14
    Igor Danilkin, Christoph Florian Redmer, Marc Vanderhaeghen

    In view of the current 3–4 σ deviation between theoretical and experimental values for the muon’s anomalous magnetic moment, we review the ongoing efforts in constraining the hadronic light-by-light contribution to aμ by using dispersive techniques combined with a dedicated experimental program to obtain the required hadronic input.

    更新日期:2019-05-14
  • Pentaquark and Tetraquark States
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-04-09
    Yan-Rui Liu, Hua-Xing Chen, Wei Chen, Xiang Liu, Shi-Lin Zhu

    The past seventeen years have witnessed tremendous progress on the experimental and theoretical explorations of the multiquark states. The hidden-charm and hidden-bottom multiquark systems were reviewed extensively in Ref. [1]. In this article, we shall update the experimental and theoretical efforts on the hidden heavy flavor multiquark systems in the past three years. Especially the LHCb collaboration

    更新日期:2019-04-09
  • Novel techniques for constraining neutron-capture rates relevant for r-process heavy-element nucleosynthesis
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-04-05
    A.C. Larsen, A. Spyrou, S.N. Liddick, M. Guttormsen

    The rapid-neutron capture process (r process) is identified as the producer of about 50% of elements heavier than iron. This process requires an astrophysical environment with an extremely high neutron flux over a short amount of time (∼ seconds), creating very neutron-rich nuclei that are subsequently transformed to stable nuclei via β− decay. In 2017, one site for the r process was confirmed: the

    更新日期:2019-04-05
  • Extreme matter in electromagnetic fields and rotation
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-04-04
    Kenji Fukushima

    We look over recent developments on our understanding about relativistic matter under external electromagnetic fields and mechanical rotation. I review various calculational approaches for concrete physics problems, putting my special emphasis on generality of the method and the consequence, rather than going into phenomenological applications in a specific field of physics. The topics covered in this

    更新日期:2019-04-04
  • Current status of r-process nucleosynthesis
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-03-06
    T. Kajino, W. Aoki, A.B. Balantekin, R. Diehl, M.A. Famiano, G.J. Mathews

    The rapid neutron capture process (r process) is believed to be responsible for about half of the production of the elements heavier than iron and contributes to abundances of some lighter nuclides as well. A universal pattern of r-process element abundances is observed in some metal-poor stars of the Galactic halo. This suggests that a well-regulated combination of astrophysical conditions and nuclear

    更新日期:2019-03-06
  • Transport approaches for the description of intermediate-energy heavy-ion collisions
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-03-06
    Jun Xu

    The transport approach is a useful tool to study dynamics of non-equilibrium systems. For heavy-ion collisions at intermediate energies, where both the smooth nucleon potential and the hard-core nucleon-nucleon collision are important, the dynamics are properly described by two families of transport models, i.e., the Boltzmann-Uehling-Uhlenbeck approach and the quantum molecular dynamics approach.

    更新日期:2019-03-06
  • Electroweak precision tests of the Standard Model after the discovery of the Higgs boson
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-02-28
    Jens Erler, Matthias Schott

    The global fit of the Standard Model predictions to electroweak precision data, which has been routinely performed in the past decades by several groups, led to the prediction of the top quark and the Higgs boson masses before their respective discoveries. With the measurement of the Higgs boson mass at the Large Hadron Collider (LHC) in 2012 by the ATLAS and CMS collaborations, the last free parameter

    更新日期:2019-02-28
  • A design for an electromagnetic filter for precision energy measurements at the tritium endpoint
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-02-28
    M.G. Betti, M. Biasotti, A. Boscá, F. Calle, J. Carabe-Lopez, G. Cavoto, C. Chang, W. Chung, A.G. Cocco, A.P. Colijn, J. Conrad, N. D’Ambrosio, P.F. de Salas, M. Faverzani, A. Ferella, E. Ferri, P. Garcia-Abia, G. Garcia Gomez-Tejedor, K.M. Zurek

    We present a detailed description of the electromagnetic filter for the PTOLEMY project to directly detect the Cosmic Neutrino Background (CNB). Starting with an initial estimate for the orbital magnetic moment, the higher-order drift process of E×B is configured to balance the gradient-B drift motion of the electron in such a way as to guide the trajectory into the standing voltage potential along

    更新日期:2019-02-28
  • Recent progress in QCD condensate evaluations and sum rules
    Prog. Part. Nucl. Phys. (IF 13.421) Pub Date : 2019-02-27
    Philipp Gubler, Daisuke Satow

    We review the recent status of the QCD sum rule approach to study the properties of hadrons in vacuum and in hot or dense matter. Special focus is laid on the progress made in the evaluation of the QCD condensates, which are the input of all QCD sum rule calculations, and for which much new information has become available through high precision lattice QCD calculations, chiral perturbation theory

    更新日期:2019-02-27
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