Article
Physics, Particles & Fields
Jinmian Li, Junle Pei, Cong Zhang
Summary: This work investigates the self-interacting dark matter (SIDM) scenario in the general NMSSM and beyond, proposing an improved analytical expression for the self-interacting cross section of dark matter. By Monte Carlo simulation, the multiplicities and spectra of dark matter/mediator from Higgsino production and decay at the LHC are analyzed.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Ethan Carragher, Will Handley, Daniel Murnane, Peter Stangl, Wei Su, Martin White, Anthony G. Williams
Summary: Models where the Higgs boson is a composite pseudo-Nambu-Goldstone boson provide attractive solutions to the Higgs mass naturalness problem. By examining three such models based on the minimal SO(5) -> SO(4) symmetry breaking pattern, it is found that each model can satisfy all constraints simultaneously and analysis of the collider phenomenology in viable regions reveals interesting results.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Waqas Ahmed, Shabbar Raza, Qaisar Shafi, Cem Salih Un, Bin Zhu
Summary: The SUSY model discusses the introduction of only electrically neutral states, doubling the number of states in the neutralino sector. It presents a rich phenomenology depending on dark matter composition. Collider experiments could test the lower bound on stop and gluino masses, while direct detection experiments will be able to test various dark matter solutions in the future.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Thi Nhung Dao, Martin Gabelmann, Margarete Muehlleitner, Heidi Rzehak
Summary: We present our computation of two-loop corrections to the Higgs boson masses of the CP-violating Next-to-Minimal Supersymmetric Standard Model (NMSSM). Our new corrections increase with rising lambda and kappa but remain overall below about 3% compared to our previously computed corrections, in the region compatible with perturbativity below the GUT scale. The impact of CP-violating phases in the new corrections is small, and we show how to efficiently treat the Goldstone Boson Catastrophe due to infrared divergences.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Junjie Cao, Jingwei Lian, Yusi Pan, Di Zhang, Pengxuan Zhu
Summary: A recent Fermilab report showed a significant discrepancy between muon g-2 and the standard model prediction. The study suggests that in the general next-to-minimal supersymmetric standard model (GNMSSM), a singlino-dominated neutralino could explain this discrepancy and make the detection of sparticles at the LHC challenging.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Manimala Chakraborti, Leszek Roszkowski, Sebastian Trojanowski
Summary: The recent confirmation by Fermilab-based Muon g-2 experiment of the (g - 2)(mu) anomaly has implications for allowed particle spectra in supersymmetry models with dark matter. The study found that general patterns of dark matter could be accommodated in unified SUSY models, unlike in simpler frameworks. Accessing these solutions at the LHC may be challenging due to compressed spectra.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Chang-Xin Liu, Hai-Bin Zhang, Jin-Lei Yang, Shu-Min Zhao, Tai-Fu Feng
Summary: We study the decay of the lightest Higgs boson h -> MZ in the mu from nu supersymmetric standard model (mu nu SSM), where M is a vector meson (rho, omega, phi, J/Psi, Upsilon). The introduction of three right-handed neutrino superfields in mu nu SSM leads to the mixing of the Higgs doublets with the right-handed sneutrinos, which affects the mass and couplings of the lightest Higgs boson. In certain parameter space, the mu nu SSM can provide significant new physics contributions to the signal strengths of h -> MZ and h -> gamma gamma, which may be observable in high-energy colliders such as a 100TeV collider or other future ones.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Yi Liu, Stefano Moretti, Harri Waltari
Summary: This study investigates the potential for measuring neutrino Yukawa couplings in the NMSSMr model, where the lightest right-handed sneutrino serves as the Dark Matter candidate, and can be produced at next generation e(+)e(-) colliders. The results highlight the purity of the signal from chargino pair production and subsequent decay, providing the opportunity to extract Yukawa parameters in the sneutrino sector.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Kwang Sik Jeong, Junichiro Kawamura, Chan Beom Park
Summary: The new measurement of the anomalous magnetic moment of muon at the Fermilab Muon g - 2 experiment has highlighted the discrepancy between the standard model prediction and the experimental observation from the BNL measurement. If the new physics responsible for the muon g - 2 anomaly is supersymmetric, obtaining light electroweakinos and sleptons in a systematic way becomes important. The KKLT scenario, with mixed modulus-anomaly mediation, is found capable of explaining the muon g - 2 anomaly in certain parameter regions.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Thomas Kwasnitza, Dominik Stoeckinger
Summary: This study analyzes the appearance of the trilinear squark-Higgs couplings x(q) in the Higgs sector of MSSM and in threshold corrections to the SM, providing constraints on the maximal powers of x(q) in QCD-related loop corrections. It often implies all-order resummations of leading or subleading x(q) contributions in SM-parametrized expressions. Various all-order resummation relations for Delta lambda increment involving x(q)-enhanced terms and different orders in Yukawa and gauge couplings are presented, contrasting elements that cannot be resummed.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Motoi Endo, Koichi Hamaguchi, Sho Iwamoto, Teppei Kitahara
Summary: The Fermilab Muon g-2 collaboration confirmed the discrepancy with the Standard Model prediction, revisiting low-scale supersymmetric models. Despite exclusion of broad parameter spaces for existing scenarios, possibilities remain open.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Junjie Cao, Demin Li, Jingwei Lian, Yuanfang Yue, Haijing Zhou
Summary: The general NMSSM describes singlino-dominated dark matter properties through four independent parameters, influencing annihilation and scattering processes. Compared to Z(3)-NMSSM, which introduces an additional parameter, experiments strongly favor the general NMSSM.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Yasar Hicyilmaz
Summary: The study demonstrates the possibility of t-b-tau quark coupling unification in the CMSSM model with non-holomorphic soft SUSY breaking terms, and the existence of different unified parameter values under different conditions. Additionally, some relevant results regarding dark matter and resonance solutions were also identified.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Konstantin T. Matchev, Prasanth Shyamsundar
Summary: The ThickBrick prescription is used to train machine-learning-based event selectors and categorizers in high energy physics experiments to maximize the statistical significance of signal excess. It eliminates misalignments with physics goals, prevents background distribution from becoming peaked in signal region, and applies optimal selection cutoffs based on event variables. The public Python implementation of ThickBrick includes usage examples for researchers.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Lucien Heurtier, Hao-Lin Li, Huayang Song, Shufang Su, Wei Su, Jiang-Hao Yu
Summary: Investigation of a class of neutral naturalness models reveals the Higgs boson as a pseudo-Goldstone boson, with various dimension-six operators obtained by integrating out the radial mode. Chi (2) fit to precision measurements of Higgs couplings suggests a new physics scale could be explored up to 2.3 (2.4) TeV at future colliders, with limits comparable to indirect constraints from electroweak precision measurements.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Motoi Endo, Daiki Ueda
JOURNAL OF HIGH ENERGY PHYSICS
(2020)
Article
Physics, Particles & Fields
Motoi Endo, Koichi Hamaguchi, Sho Iwamoto, Teppei Kitahara
JOURNAL OF HIGH ENERGY PHYSICS
(2020)
Article
Physics, Particles & Fields
Hajime Fukuda, Kazuya Yonekura
Summary: This study examines the phenomenon of charge teleportation between two spatially separated objects without exchanging charged particles, which is achieved through anomaly inflow and implies the presence of anomalous quantum mechanics. Despite charge violation in the anomalous theories living on these objects, the total charge between the two spatially separated objects remains conserved.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Kazuya Yonekura
Summary: In this paper, we show how Goldstone bosons can reproduce anomalies of UV theories under the symmetry group G at the nonperturbative level through a general definition of Wess-Zumino-Witten terms. The hidden local symmetry (H) over cap, used to describe Goldstone bosons in the coset construction G/H, plays a crucial role and leads to generalized theta-angles of the hidden local gauge group (H) over cap. This concept is illustrated using SO(N-c) (or Spin(N-c)) QCD-like theories in four dimensions.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Motoi Endo, Satoshi Mishima, Daiki Ueda
Summary: This study revisits electroweak radiative corrections to Standard Model Effective Field Theory (SMEFT) operators relevant to B-meson semileptonic decays. One-loop matching formulas onto the low-energy effective field theory are provided without imposing any flavor symmetry, showcasing gauge independence in the R-xi gauge especially when dealing with quark-flavor mixings.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Kazuya Yonekura
Summary: The paper discusses a topological reason why global symmetries are not conserved in quantum gravity, particularly when originating from compactification of a higher form symmetry. This mechanism is purely topological and does not necessitate any explicit breaking term in the UV Lagrangian. It is noted that local current conservation does not imply global charge conservation in a sum over geometries in the path integral.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Motoi Endo, Koichi Hamaguchi, Sho Iwamoto, Teppei Kitahara
Summary: The Fermilab Muon g-2 collaboration confirmed the discrepancy with the Standard Model prediction, revisiting low-scale supersymmetric models. Despite exclusion of broad parameter spaces for existing scenarios, possibilities remain open.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Multidisciplinary
Shun K. Kobayashi, Kazuya Yonekura
Summary: The paper provides a simple derivation of the Atiyah-Patodi-Singer (APS) index theorem and its generalization using the path integral of massless Dirac fermions. It shows that APS boundary conditions and their generalizations can be identified as physical state vectors in the Hilbert space of the massless fermion theory, with the APS eta-invariant representing the axial charge of the physical states.
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS
(2021)
Article
Physics, Particles & Fields
Motoi Endo, Syuhei Iguro, Teppei Kitahara, Michihisa Takeuchi, Ryoutaro Watanabe
Summary: Motivated by anomalies in b -> c tau(nu) over bar processes, we study non-resonant searches for new physics at the LHC involving tau leptons, b-jets, and missing transverse momentum. The analysis explores both effective field theory frameworks and explicit leptoquark models, finding sensitivity to leptoquark mass and improved detection capabilities over conventional searches. Probing the parameter space suggested by anomalies and investigating angular correlations among particles are key considerations for discriminating between different scenarios.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Mathematical
Chang-Tse Hsieh, Yuji Tachikawa, Kazuya Yonekura
Summary: The focus of this study is on the gravitational and Green-Schwarz type anomalies of chiral and non-chiral p-form gauge fields. These anomalies naturally arise as boundary modes of higher-dimensional bulk topological phases. By computing the Atiyah-Patodi-Singer eta-invariant, we provide a systematic description of the total bulk-boundary system, analogous to the realization of a chiral fermion on the boundary of a massive fermion. The SL(2, Z) anomaly of the 4D Maxwell theory is determined using our formalism, and we also investigate the worldvolume theories of D-branes and M5-branes in different string, M, and F theories.
COMMUNICATIONS IN MATHEMATICAL PHYSICS
(2022)
Article
Physics, Particles & Fields
Yasunori Lee, Kazuya Yonekura
Summary: In this paper, we study the gauge and gravitational anomalies of fermions and 2-form fields on eight-dimensional spin manifolds. By using spectral sequence techniques, we classify possible global gauge anomalies and identify their explicit generator manifolds. It is found that fermions in the adjoint representation of any simple Lie group and gravitinos in 8d N = 1 supergravity theory have anomalies. We also discuss how the anomalies of 2-form fields cancel against the fermion anomalies in certain supergravity theories, as well as how the gravitino anomalies are canceled by topological degrees of freedom in another class of theories.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Kazuya Yonekura
Summary: We study the structure of anomalies in general heterotic string theories by considering general 2-dimensional N=(0,1) supersymmetric quantum field theories. The results show that perturbative anomalies correspond to the Witten index of SQFTs, while global anomalies correspond to a torsion version of the Witten index.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Astronomy & Astrophysics
Masaki Yamada, Kazuya Yonekura
Summary: We discuss the formation of cosmic strings or macroscopic color flux tubes after the deconfinement/con-finement phase transition in the pure Yang-Mills theory. These cosmic strings, based on holographic dual descriptions, can be interpreted as F-strings or D-strings in the gravity side, depending on the structure of the gauge group. The reconnection probabilities of F- and D-strings are suppressed by factors of 1/N^2 and e^-cN, respectively, in the large-N limit. The formation of color flux tubes after the phase transition is similar to the formation of local cosmic strings after spontaneous symmetry breaking in the weak-U(1) gauge theory. We use a velocity-dependent one-scale model to describe the dynamics of the string network and calculate the gravitational wave signals from string loops, considering the dependence on the size of produced string loops.
Article
Astronomy & Astrophysics
Masaki Yamada, Kazuya Yonekura
Summary: This study discusses the formation of cosmic strings or macroscopic color flux tubes in the phase transition from the deconfinement to confinement phase in pure Yang-Mills theory. The holographic dual descriptions suggest that the cosmic strings are related to fundamental strings or wrapped D-branes in gravity side, with reconnection probability being suppressed. The study shows that the pure YM theory provides a simple realization of cosmic F-and D-strings.
Article
Astronomy & Astrophysics
Motoi Endo, Satoshi Mishima
Summary: Recently, the CDF Collaboration reported an updated result on the measurement of the W-boson mass, which showed a deviation of 7 sigma from the standard model prediction. This discrepancy may indicate the presence of new contributions to the Fermi coupling constant. Simple extensions of the standard model were studied, and it was found that the tension implies the existence of new physics at multi-TeV scales if the new coupling to the electron and/or muon is of order unity.