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  • The geometric Standard Model Effective Field Theory
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-27
    Andreas Helset, Adam Martin, Michael Trott

    Abstract We develop the geometric formulation of the Standard Model Effective Field Theory (SMEFT). Using this approach we derive all-orders results in the \( \sqrt{2\left\langle {H}^{\dagger }H\right\rangle }/\Lambda \) expansion relevant for studies of Electroweak Precision and Higgs data.

    更新日期:2020-03-28
  • Topological entanglement entropy in d-dimensions for Abelian higher gauge theories
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-27
    J.P. Ibieta-Jimenez, M. Petrucci, L.N. Queiroz Xavier, P. Teotonio-Sobrinho

    Abstract We compute the topological entanglement entropy for a large set of lattice models in d-dimensions. It is well known that many such quantum systems can be constructed out of lattice gauge models. For dimensionality higher than two, there are generalizations going beyond gauge theories, which are called higher gauge theories and rely on higher-order generalizations of groups. Our main concern

    更新日期:2020-03-28
  • Revisiting the classifications of 6 d SCFTs and LSTs
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-27
    Lakshya Bhardwaj

    Abstract Gauge-theoretic anomaly cancellation predicts the existence of many 6d SCFTs and little string theories (LSTs) that have not been given a string theory construction so far. In this paper, we provide an explicit construction of all such “missing” 6d SCFTs and LSTs by using the frozen phase of F-theory. We conjecture that the full set of 6d SCFTs and LSTs is obtained by combining the set of

    更新日期:2020-03-28
  • New limits on neutrino non-unitary mixings based on prescribed singular values
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-27
    Wojciech Flieger, Janusz Gluza, Kamil Porwit

    Abstract Singular values are used to construct physically admissible 3-dimensional mixing matrices characterized as contractions. Depending on the number of singular values strictly less than one, the space of the 3-dimensional mixing matrices can be split into four disjoint subsets, which accordingly corresponds to the minimal number of additional, non-standard neutrinos. We show in numerical analysis

    更新日期:2020-03-28
  • Precision microstate counting for the entropy of wrapped M5-branes
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-27
    Dongmin Gang, Nakwoo Kim, Leopoldo A. Pando Zayas

    Abstract We study the large N expansion of twisted partition functions of 3d \( \mathcal{N} \) = 2 superconformal field theories arising from N M5-branes wrapped on a hyperbolic 3- manifold, M3. Via the 3d-3d correspondence, the partition functions of these 3d \( \mathcal{N} \) = 2 superconformal field theories are related to simple topological invariants on the 3-manifold. The partition functions

    更新日期:2020-03-28
  • On anomalous conformal Ward identities for Wilson loops on polygon-like contours with circular edges
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-27
    Harald Dorn

    Abstract We derive the anomalous conformal Ward identities for \( \mathcal{N} \) = 4 SYM Wilson loops on polygon-like contours with edges formed by circular arcs. With a suitable choice of parameterisation they are very similarly to those for local correlation functions. Their solutions have a conformally covariant factor depending on the distances of the corners times a conformally invariant remainder

    更新日期:2020-03-28
  • Neutrinoless double beta decay versus other probes of heavy sterile neutrinos
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-27
    Patrick D. Bolton, Frank F. Deppisch, P.S. Bhupal Dev

    Abstract We make a comparative study of the neutrinoless double beta decay constraints on heavy sterile neutrinos versus other direct and indirect constraints from both lepton number conserving and violating processes, as a sensitive probe of the extent of lepton number violation and possible interference effects in the sterile sector. We introduce a phenomenological parametrisation of the simplified

    更新日期:2020-03-28
  • Fibration structure in toric hypersurface Calabi-Yau threefolds
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-27
    Yu-Chien Huang, Washington Taylor

    Abstract We find through a systematic analysis that all but 29,223 of the 473.8 million 4D reflexive polytopes found by Kreuzer and Skarke have a 2D reflexive subpolytope. Such a subpolytope is generally associated with the presence of an elliptic or genus one fibration in the corresponding birational equivalence class of Calabi-Yau threefolds. This extends the growing body of evidence that most Calabi-Yau

    更新日期:2020-03-28
  • Off-shell vs on-shell modelling of top quarks in photon associated production
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-26
    G. Bevilacqua, H.B. Hartanto, M. Kraus, T. Weber, M. Worek

    Abstract We present a comparative study of various approaches for modelling of the \( {e}^{+}{v}_e{\mu}^{-}{\overline{v}}_{\mu }b\overline{b}\gamma \) final state in \( t\overline{t}\gamma \) production at the LHC. Working at the NLO in QCD we compare the fully realistic description of the top quark decay chain with the one provided by the narrow-width-approximation. The former approach comprises all

    更新日期:2020-03-28
  • Triple Higgs production at hadron colliders at NNLO in QCD
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-26
    Daniel de Florian, Ignacio Fabre, Javier Mazzitelli

    Abstract In this work we analyse the triple Higgs boson production cross section at hadron colliders via gluon fusion, and present for the first time the full set of QCD NNLO corrections in the heavy top limit. In order to account for finite top mass effects we perform two different reweighting procedures, and study the dependence of the result on the choice of the approximation. Combining the most

    更新日期:2020-03-27
  • Toward the pole
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-26
    S. Alekseev, A. Gorsky, M. Litvinov

    Abstract We study the analytic structure of semiclassical conformal blocks, namely of the 1-point conformal block on the torus and of the 4-point conformal block on the sphere, as functions of the intermediate dimension. We interpret their discontinuities, which can be revealed with the use of a particular resummation procedure, holographically in terms of configurations of geodesics in AdS3. In other

    更新日期:2020-03-27
  • Conformally invariant averaged null energy condition from AdS/CFT
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-26
    Norihiro Iizuka, Akihiro Ishibashi, Kengo Maeda

    Abstract We study the compatibility of the AdS/CFT duality with the bulk and boundary causality, and derive a conformally invariant averaged null energy condition (CANEC) for quantum field theories in 3 and 5-dimensional curved boundaries. This is the generalization of the averaged null energy condition (ANEC) in Minkowski spacetime to curved boundaries, where null energy is averaged along the null

    更新日期:2020-03-27
  • The leading jet transverse momentum in inclusive jet production and with a loose jet veto
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-26
    Darren J. Scott, Wouter J. Waalewijn

    Abstract We study the transverse momentum of the leading jet in the limit where the jet radius is small, R ≪ 1. We introduce the leading-jet function to calculate this cross section for an inclusive jet sample, and the subleading-jet function when a loose veto on additional jets is imposed, i.e. \( {}_{PTJ}{\underset{\sim }{>}}_{P_T^{\mathrm{veto}}} \). These jet functions are calculated at next-to-leading

    更新日期:2020-03-27
  • Triangle diagram, distance geometry and Symmetries of Feynman Integrals
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-26
    Barak Kol, Subhajit Mazumdar

    Abstract We study the most general triangle diagram through the Symmetries of Feynman Integrals (SFI) approach. The SFI equation system is obtained and presented in a simple basis. The system is solved providing a novel derivation of an essentially known expression. We stress a description of the underlying geometry in terms of the Distance Geometry of a tetrahedron discussed by Davydychev-Delbourgo

    更新日期:2020-03-27
  • N$$ \mathcal{N} $$ = 2 conformal gauge theories at large R-charge: the SU( N ) case
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-26
    Matteo Beccaria, Francesco Galvagno, Azeem Hasan

    Abstract Conformal theories with a global symmetry may be studied in the double scaling regime where the interaction strength is reduced while the global charge increases. Here, we study generic 4d \( \mathcal{N} \) = 2 SU(N ) gauge theories with conformal matter content at large R-charge QR → ∞ with fixed ’t Hooft-like coupling \( \kappa ={Q}_{\mathrm{R}}{g}_{\mathrm{YM}}^2. \) Our analysis concerns

    更新日期:2020-03-27
  • Pure and twisted holography
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-25
    Songyuan Li, Jan Troost

    Abstract We analyze a simple example of a holographically dual pair in which we topologically twist both theories. The holography is based on the two-dimensional N = 2 supersymmetric Liouville conformal field theory that defines a unitary bulk quantum supergravity theory in three-dimensional anti-de Sitter space. The supersymmetric version of three-dimensional Liouville quantum gravity allows for a

    更新日期:2020-03-27
  • Generalizations of reflected entropy and the holographic dual
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-25
    Jinwei Chu, Runze Qi, Yang Zhou

    Abstract We introduce a new class of quantum and classical correlation measures by generalizing the reflected entropy to multipartite states. We define the new measures for quantum systems in one spatial dimension. For quantum systems having gravity duals, we show that the holographic duals of these new measures are various types of minimal surfaces consist of different entanglement wedge cross sections

    更新日期:2020-03-26
  • The Page curve of Hawking radiation from semiclassical geometry
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-25
    Ahmed Almheiri, Raghu Mahajan, Juan Maldacena, Ying Zhao

    Abstract We consider a gravity theory coupled to matter, where the matter has a higher-dimensional holographic dual. In such a theory, finding quantum extremal surfaces becomes equivalent to finding the RT/HRT surfaces in the higher-dimensional theory. Using this we compute the entropy of Hawking radiation and argue that it follows the Page curve, as suggested by recent computations of the entropy

    更新日期:2020-03-26
  • F-theory models with U(1) × ℤ 2 , ℤ 4 and transitions in discrete gauge groups
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-25
    Yusuke Kimura

    Abstract We examine the proposal in the previous paper to resolve the puzzle in transitions in discrete gauge groups. We focus on a four-section geometry to test the proposal. We observed that a discrete ℤ2 gauge group enlarges and U(1) also forms in F-theory along any bisection geometries locus in the four-section geometry built as the complete intersections of two quadrics in ℙ3 fibered over any

    更新日期:2020-03-26
  • Radiative neutrino mass model from a mass dimension-11 ∆L = 2 effective operator
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-25
    John Gargalionis, Iulia Popa-Mateiu, Raymond R. Volkas

    Abstract We present the first detailed phenomenological analysis of a radiative Majorana neutrino mass model constructed from opening up a ∆L = 2 mass-dimension-11 effective operator constructed out of standard model fields. While three such operators are generated, only one dominates neutrino mass generation, namely \( {O}_{47}=\overline{L^C}L\overline{Q^C}L\overline{Q}{Q}^C HH, \) where L denotes

    更新日期:2020-03-26
  • Exotic spin-dependent forces from a hidden sector
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-25
    Alexandria Costantino, Sylvain Fichet, Philip Tanedo

    Abstract New dynamics from hidden sectors may manifest as long-range forces between visible matter particles. The well-known case of Yukawa-like potentials occurs via the exchange of a single virtual particle. However, more exotic behavior is also possible. We present three classes of exotic potentials that are generated by relativistic theories: (i) quantum forces from the loop-level exchange of two

    更新日期:2020-03-26
  • Information flow in black hole evaporation
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-25
    Hong Zhe Chen, Zachary Fisher, Juan Hernandez, Robert C. Myers, Shan-Ming Ruan

    Abstract Recently, new holographic models of black hole evaporation have given fresh insights into the information paradox [1–3]. In these models, the black hole evaporates into an auxiliary bath space after a quantum quench, wherein the holographic theory and the bath are joined. One particularly exciting development is the appearance of ‘ER=EPR’-like wormholes in the (doubly) holographic model of

    更新日期:2020-03-26
  • Bianchi type-V spinning particle on S$$ \mathcal{S} $$ 2
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-25
    Anton Galajinsky

    Abstract Integrable spinning extension of a free particle on \( \mathcal{S} \)2 is constructed in which spin degrees of freedom are represented by a 3-vector obeying the Bianchi type-V algebra. Generalizations involving a scalar potential giving rise to two quadratic constants of the motion, or external field of the Dirac monopole, or the motion on the group manifold of SU(2) are built. A link to the

    更新日期:2020-03-26
  • Charged dilaton black hole with multiple Liouville potentials and gauge fields
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-24
    Yen-Kheng Lim

    Abstract A solution to an Einstein-Maxwell-dilaton-type theory with M Liouville potentials and N gauge fields is presented, where M and N are arbitrary integers. This exact solution interpolates between the Lifshitz black hole and the topological dilaton black hole. The thermodynamic behaviour of the solution is found to be similar to that of the Lifshitz black hole, where a phase transition may occur

    更新日期:2020-03-26
  • Quasi-integrable KdV models, towers of infinite number of anomalous charges and soliton collisions
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-24
    H. Blas, R. Ochoa, D. Suarez

    Abstract We found, through analytical and numerical methods, new towers of infinite number of asymptotically conserved charges for deformations of the Korteweg-de Vries equation (KdV). It is shown analytically that the standard KdV also exhibits some towers of infinite number of anomalous charges, and that their relevant anomalies vanish for N −soliton solution. Some deformations of the KdV model are

    更新日期:2020-03-26
  • The Higgs trilinear coupling and the scale of new physics
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-24
    Spencer Chang, Markus A. Luty

    Abstract We consider modifications of the Higgs potential due to new physics at high energy scales. These upset delicate cancellations predicted by the Standard Model for processes involving Higgs bosons and longitudinal gauge bosons, and lead to a breakdown of the theory at high energies. We focus on modifications of the Higgs trilinear coupling and use the violation of tree-level unitarity as an

    更新日期:2020-03-26
  • Precision calculation of the axion-nucleon coupling in chiral perturbation theory
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-24
    Thomas Vonk, Feng-Kun Guo, Ulf-G. Meißner

    Abstract We derive the axion-nucleon interaction Lagrangian in heavy baryon chiral perturbation theory up to next-to-next-to-leading order. The effective axion-nucleon coupling is calculated to a few percent accuracy.

    更新日期:2020-03-26
  • The quest for purely virtual quanta: fakeons versus Feynman-Wheeler particles
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-24
    Damiano Anselmi

    Abstract The search for purely virtual quanta has attracted interest in the past. We consider various proposals and compare them to the concept of fake particle, or “fakeon”. In particular, the Feynman-Wheeler propagator, which amounts to using the Cauchy principal value inside Feynman diagrams, violates renormalizability, unitarity and stability, due to the coexistence of the prescriptions ±iE. We

    更新日期:2020-03-26
  • Dark matter clusters and time correlations in direct detection experiments
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-24
    Shmuel Nussinov, Yongchao Zhang

    Abstract Assuming that dark matter (DM) efficiently clusters on various scales we analyse the possible impact on direct DM searches. For certain sizes and densities of DM clusters, mutual detector-cluster encounters may occur only once a year or every several years leading to the apparent failure of individual experiments searching for DM to discover it. If, however, encounters with Earth size and

    更新日期:2020-03-26
  • The partonic structure of the electron at the next-to-leading logarithmic accuracy in QED
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-24
    V. Bertone, M. Cacciari, S. Frixione, G. Stagnitto

    Abstract By working in QED, we obtain the electron, positron, and photon Parton Distribution Functions (PDFs) of the unpolarised electron at the next-to-leading logarithmic accuracy. The PDFs account for all of the universal effects of initial-state collinear origin, and are key ingredients in the calculations of cross sections in the so-called structure- function approach. We present both numerical

    更新日期:2020-03-26
  • Unruh effect universality: emergent conical geometry from density operator
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-24
    Georgy Y. Prokhorov, Oleg V. Teryaev, Valentin I. Zakharov

    Abstract The Unruh effect has been investigated from the point of view of the quantum statistical Zubarev density operator in space with the Minkowski metric. Quantum corrections of the fourth order in acceleration to the energy-momentum tensor of real and complex scalar fields, and Dirac field are calculated. Both massless and massive fields are considered. The method for regularization of discovered

    更新日期:2020-03-26
  • New R-matrices with non-additive spectral parameters and integrable models of strongly correlated fermions
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-24
    Yao-Zhong Zhang, Jason L. Werry

    Abstract We present a general formula for constructing R-matrices with non-additive spectral parameters associated with a type-I quantum superalgebra. The spectral parameters originate from two one-parameter families of inequivalent finite-dimensional irreducible representations of the quantum superalgebra upon which the R-matrix acts. Applying to the quantum superalgebra Uq(gl(2|1)), we obtain the

    更新日期:2020-03-26
  • Timing information at HL-LHC: complete determination of masses of dark matter and long lived particle
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-24
    Zachary Flowers, Dong Woo Kang, Quinn Meier, Seong Chan Park, Christopher Rogan

    Abstract A long-standing kinematic challenge in data analysis at hadron colliders is the determination of the masses of invisible particles. This issue is particularly relevant in searches for evidence of dark matter production, which remains one of the prominent targets of future collider experiments. In this paper, we show that the additional information from the precision timing measurements, provided

    更新日期:2020-03-24
  • Charming new B -physics
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-23
    Sebastian Jäger, Matthew Kirk, Alexander Lenz, Kirsten Leslie

    Abstract We give a comprehensive account of the flavour physics of Beyond-Standard-Model (BSM) effects in b → c\( \overline{c} \)cs transitions, considering the full set of 20 four-quark operators. We discuss the leading-order structure of their RG mixing with each other as well as the QCD-penguin, dipole, and FCNC semileptonic operators they necessarily mix with, providing compact expressions. We

    更新日期:2020-03-24
  • Deconfinement on axion domain walls
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-23
    Mohamed M. Anber, Erich Poppitz

    Abstract We study SU(Nc) gauge theories with Dirac fermions in representations ℛ of nonzero N -ality, coupled to axions. These theories have an exact discrete chiral symmetry, which has a mixed ’t Hooft anomaly with general baryon-color-flavor backgrounds, called the “BCF anomaly” in [1]. The infrared theory also has an emergent \( {\mathrm{\mathbb{Z}}}_{N_c}^{(1)} \) 1-form center symmetry. We show

    更新日期:2020-03-24
  • Two-loop conformal invariance for Yang-Baxter deformed strings
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-23
    Riccardo Borsato, Linus Wulff

    Abstract The so-called homogeneous Yang-Baxter (YB) deformations can be considered a non-abelian generalization of T-duality-shift-T-duality (TsT) transformations. TsT transformations are known to preserve conformal symmetry to all orders in α′. Here we argue that (unimodular) YB deformations of a bosonic string also preserve conformal symmetry, at least to two-loop order. We do this by showing that

    更新日期:2020-03-24
  • Extended BMS algebra of celestial CFT
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-23
    Angelos Fotopoulos, Stephan Stieberger, Tomasz R. Taylor, Bin Zhu

    Abstract We elaborate on the proposal of flat holography in which four-dimensional physics is encoded in two-dimensional celestial conformal field theory (CCFT). The symmetry underlying CCFT is the extended BMS symmetry of (asymptotically) flat space­ time. We use soft and collinear theorems of Einstein-Yang-Mills theory to derive the OPEs of BMS field operators generating superrotations and supertranslations

    更新日期:2020-03-24
  • The proton in high definition: revisiting photon-initiated production in high energy collisions
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-23
    L.A. Harland-Lang

    Abstract We re-examine the current state of the art for the calculation of photon- initiated processes at the LHC, as formulated in terms of a photon PDF in the proton that may be determined rather precisely from the known proton structure functions. We in particular demonstrate that a by construction more precise calculation is provided by a direct application of the structure function approach, best

    更新日期:2020-03-24
  • Modified instanton sum in QCD and higher-groups
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-23
    Yuya Tanizaki, Mithat Ünsal

    Abstract We consider the SU(N) Yang-Mills theory, whose topological sectors are restricted to the instanton number with integer multiples of p. We can formulate such a quantum field theory maintaining locality and unitarity, and the model contains both 2π-periodic scalar and 3-form gauge fields. This can be interpreted as coupling a topological theory to Yang-Mills theory, so the local dynamics becomes

    更新日期:2020-03-24
  • Modified celestial amplitude in Einstein gravity
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-23
    Shamik Banerjee, Sudip Ghosh, Pranjal Pandey, Arnab Priya Saha

    Abstract In this paper we evaluate the modified celestial amplitude for gravitons and gluons, as defined in [4]. We find that the modified (tree) amplitude is finite for gravitons in Einstein gravity. The modified amplitude behaves like correlation function of operators inserted at various points of null-infinity in the Minkowski space-time. Therefore, unlike the standard celestial amplitudes, these

    更新日期:2020-03-24
  • More on the entropy product and dual CFTs
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-23
    Hanif Golchin

    Abstract In this paper, we check the universality of the entropy product for some black hole and black ring solutions. Applying the asymptotic symmetry group (ASG) analysis, we also find the central charges of the dual CFTs for these solutions. It has been observed [16] that if the entropy product for a solution is universal, it is possible to read the central charges of the dual CFTs from the entropy

    更新日期:2020-03-24
  • Composite operators near the boundary
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-20
    Vladimír Procházka, Alexander Söderberg

    Abstract We use renormalization group methods to study composite operators existing at a boundary of an interacting conformal field theory. In particular we relate the data on boundary operators to short-distance (near-boundary) divergences of bulk two-point functions. We further argue that in the presence of running couplings at the boundary the anomalous dimensions of certain composite operators

    更新日期:2020-03-24
  • Direct detection and complementary constraints for sub-GeV dark matter
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-20
    Kyrylo Bondarenko, Alexey Boyarsky, Torsten Bringmann, Marco Hufnagel, Kai Schmidt-Hoberg, Anastasia Sokolenko

    Abstract Traditional direct searches for dark matter, looking for nuclear recoils in deep underground detectors, are challenged by an almost complete loss of sensitivity for light dark matter particles. Consequently, there is a significant effort in the community to devise new methods and experiments to overcome these difficulties, constantly pushing the limits of the lowest dark matter mass that can

    更新日期:2020-03-22
  • Bootstrapping line defects in N$$ \mathcal{N} $$ = 2 theories
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-20
    Aleix Gimenez-Grau, Pedro Liendo

    Abstract We study half-BPS line defects in \( \mathcal{N} \) = 2 superconformal theories using the bootstrap approach. We concentrate on local excitations constrained to the defect, which means the system is a 1d defect CFT with osp(4∗|2) symmetry. In order to study correlation functions we construct a suitable superspace, and then use the Casimir approach to calculate a collection of new superconformal

    更新日期:2020-03-22
  • Soft corrections to inclusive deep-inelastic scattering at four loops and beyond
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-20
    Goutam Das, Sven-Olaf Moch, Andreas Vogt

    Abstract We study the threshold corrections for inclusive deep-inelastic scattering (DIS) and their all-order resummation. Using recent results for the QCD form factor, related anomalous dimensions and Mellin moments of DIS structure functions at four loops we derive the complete soft and collinear contributions to the DIS Wilson coefficients at four loops. For a general SU(nc) gauge group the results

    更新日期:2020-03-21
  • Effective field theory approach to lepton number violating decays K±→π∓lα±lβ±:$$ {K}^{\pm}\to {\pi}^{\mp }{l}_{\alpha}^{\pm }{l}_{\beta}^{\pm }: $$ long-distance contribution
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-20
    Yi Liao, Xiao-Dong Ma, Hao-Lin Wang

    Abstract This is a sequel to our recent work [1] in which we calculated the lepton number violating (LNV) K± decays due to contact dimension-9 (dim-9) quark-lepton effective interactions that are induced at a high energy scale. In this work we investigate the long- distance contribution to the decays arising from the exchange of a neutrino. These decays can probe LNV interactions involving the second

    更新日期:2020-03-21
  • BPS invariants for Seifert manifolds
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-20
    Hee-Joong Chung

    Abstract We calculate the homological blocks for Seifert manifolds from the exact ex- pression for the G = SU(N ) Witten-Reshetikhin-Turaev invariants of Seifert manifolds obtained by Lawrence, Rozansky, and Mariño. For the G = SU(2) case, it is possible to ex- press them in terms of the false theta functions and their derivatives. For G = SU(N ), we calculate them as a series expansion and also discuss

    更新日期:2020-03-21
  • The small black hole illusion
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-20
    Pablo A. Cano, Pedro F. Ramírez, Alejandro Ruipérez

    Abstract Small black holes in string theory are characterized by a classically singular horizon with vanishing Bekenstein-Hawking entropy. It has been argued that higher- curvature corrections resolve the horizon and that the associated Wald entropy is in agreement with the microscopic degeneracy. In this note we study the heterotic two-charge small black hole and question this result, which we claim

    更新日期:2020-03-21
  • The radiation valley and exotic resonances in Wγ production at the LHC
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-20
    Rodolfo Capdevilla, Roni Harnik, Adam Martin

    Abstract The tree-level partonic angular distribution of Standard Model Wγ production possesses a feature known as the Radiation Amplitude Zero (RAZ) where destructive interference causes the cross section to vanish. At the proton level the exact cancellation disappears, however, one can find a dip in the central region of the angular distributions, here called the Radiation Valley (RV). In this paper

    更新日期:2020-03-21
  • A simple model for Hawking radiation
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-20
    Swapnamay Mondal

    Abstract We consider n free Majorana fermions probing a SYK system comprising of N Majorana fermions. We solve the full system in deep infrared and in large N (as well as large n) limit. The essential physics of the SYK system is not affected by the probe Majoranas, except addition of another tower of primaries. The SYK system is seen to induce maximal chaos as well as the whole spectrum of primaries

    更新日期:2020-03-21
  • Heavy Neutral Leptons from low-scale seesaws at the DUNE Near Detector
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-19
    Peter Ballett, Tommaso Boschi, Silvia Pascoli

    Abstract Heavy nearly-sterile neutrinos are a common ingredient in extensions of the Standard Model which aim to explain neutrino masses, like for instance in Type I seesaw models, or one of its variants. If the scale of the new Heavy Neutral Leptons (HNLs) is sufficiently low, observable signatures can arise in a range of current and upcoming experiments, from the LHC to neutrino experiments. In this

    更新日期:2020-03-20
  • Multi-component scalar dark matter from a Z N symmetry: a systematic analysis
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-19
    Carlos E. Yaguna, Óscar Zapata

    Abstract The dark matter may consist not of one elementary particle but of different species, each of them contributing a fraction of the observed dark matter density. A major theoretical difficulty with this scenario — dubbed multi-component dark matter — is to explain the stability of these distinct particles. Imposing a single ZN symmetry, which may be a remnant of a spontaneously broken U(1) gauge

    更新日期:2020-03-20
  • Lepton-trijet and displaced vertex searches for heavy neutrinos at future electron-proton colliders
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-19
    Stefan Antusch, Oliver Fischer, A. Hammad

    Abstract Electron proton (ep) colliders could provide particle collisions at TeV energies with large data rates while maintaining the clean and pile up-free environment of lepton colliders, which makes them very attractive for heavy neutrino searches. Heavy (mainly sterile) neutrinos with masses around the electroweak scale are proposed in low scale seesaw models for neutrino mass generation. In this

    更新日期:2020-03-20
  • Constraints on the parameter space in an inert doublet model with two active doublets
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-19
    Marco Merchand, Marc Sher

    Abstract We study a three Higgs doublet model where one doublet is inert and the other two doublets are active. Flavor changing neutral currents are avoided at tree-level by imposing a softly broken \( {Z}_2^{\prime } \) symmetry and we consider type I and type II Yukawa structures. The lightest inert scalar is a viable Dark Matter (DM) candidate. A numerical scan of the free parameters is performed

    更新日期:2020-03-20
  • Search for lepton flavour violating decays of a neutral heavy Higgs boson to μτ and e τ in proton-proton collisions at s$$ \sqrt{s} $$ = 13 TeV
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-18
    A. M. Sirunyan, A. Tumasyan, W. Adam, F. Ambrogi, T. Bergauer, J. Brandstetter, M. Dragicevic, J. Erö, A. Escalante Del Valle, M. Flechl, R. Frühwirth, M. Jeitler, N. Krammer, I. Krätschmer, D. Liko, T. Madlener, I. Mikulec, N. Rad, J. Schieck, R. Schöfbeck, M. Spanring, D. Spitzbart, W. Waltenberger, C.-E. Wulz, M. Zarucki, V. Drugakov, V. Mossolov, J. Suarez Gonzalez, M. R. Darwish, E. A. De Wolf

    Abstract A search for lepton flavour violating decays of a neutral non-standard-model Higgs boson in the μτ and eτ decay modes is presented. The search is based on proton-proton collisions at a center of mass energy \( \sqrt{s} \) = 13 TeV collected with the CMS detector in 2016, corresponding to an integrated luminosity of 35.9 fb−1. The τ leptons are reconstructed in the leptonic and hadronic decay

    更新日期:2020-03-20
  • Bounds on non-standard interactions of neutrinos from IceCube DeepCore data
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-18
    S.V. Demidov

    Abstract New physics in neutrino sector can reveal itself via non-standard neutrino in- teractions which can result in modification of the standard picture of neutrino propagation in matter. Experiments with atmospheric neutrinos has been used to probe this scenario. Using publicly available three-year low energy data in IceCube DeepCore we place bounds on the parameters Eαβ of non-standard neutrino

    更新日期:2020-03-19
  • Convergent momentum-space OPE and bootstrap equations in conformal field theory
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-18
    Marc Gillioz, Xiaochuan Lu, Markus A. Luty, Guram Mikaberidze

    Abstract General principles of quantum field theory imply that there exists an operator product expansion (OPE) for Wightman functions in Minkowski momentum space that converges for arbitrary kinematics. This convergence is guaranteed to hold in the sense of a distribution, meaning that it holds for correlation functions smeared by smooth test functions. The conformal blocks for this OPE are conceptually

    更新日期:2020-03-19
  • Interference effects in dilepton resonance searches for Z ′ bosons and dark matter mediators
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-18
    Felix Kahlhoefer, Alexander Mück, Stefan Schulte, Patrick Tunney

    Abstract New Z′ gauge bosons arise in many extensions of the Standard Model and predict resonances in the dilepton invariant mass spectrum. Searches for such resonances therefore provide important constraints on many models of new physics, but the resulting bounds are often calculated without interference effects. In this work we show that the effect of interference is significant and cannot be neglected

    更新日期:2020-03-19
  • Next-to-leading power threshold effects for inclusive and exclusive processes with final state jets
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-18
    Melissa van Beekveld, Wim Beenakker, Eric Laenen, Chris D. White

    Abstract It is well known that cross-sections in perturbative QCD receive large corrections from soft and collinear radiation, which can be resummed to all orders in the coupling. Whether or not the universal properties of this radiation can be extended to next-to-leading power (NLP) in the threshold expansion has been the subject of much recent study. In particular, universal forms for next-to-leading

    更新日期:2020-03-19
  • Generalized Euler index, holonomy saddles, and wall-crossing
    J. High Energy Phys. (IF 5.833) Pub Date : 2020-03-18
    Dongwook Ghim, Chiung Hwang, Piljin Yi

    Abstract We formulate Witten index problems for theories with two supercharges in a Majorana doublet, as in d = 3 \( \mathcal{N} \) = 1 theories and dimensional reduction thereof. Regardless of spacetime dimensions, the wall-crossing occurs generically, in the parameter space of the real superpotential W. With scalar multiplets only, the path integral reduces to a Gaussian one in terms of dW, with

    更新日期:2020-03-19
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