Results 41 to 50 of about 5,809,127 (274)

Zero-range effective field theory for resonant wino dark matter. Part III. Annihilation effects

Journal of High Energy Physics, 2018
Near a critical value of the wino mass where there is a zero-energy S-wave resonance at the neutral-wino-pair threshold, low-energy winos can be described by a zero-range effective field theory (ZREFT) in which the winos interact nonperturbatively ...
Eric Braaten, Evan Johnson, Hong Zhang
doaj   +1 more source

Gauge group contraction of electroweak model and its natural energy limits

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2015
The low and higher energy limits of the Electroweak Model are obtained from first principles of gauge theory. Both limits are given by the same contraction of the gauge group, but for the different consistent rescalings of the field space.
Nikolay A Gromov
doaj   +1 more source

Constraints on Four Fermion Contact Interactions from Precise Electroweak Measurements [PDF]

, 1998
We establish constraints on a general four-fermion contact interaction from precise measurements of electroweak parameters. We compute the one-loop contribution for the leptonic $Z$ width, anomalous magnetic, weak-magnetic, electric and weak dipole ...
A Gusso, Ackerstaff K (OPAL Collaboration), Ackerstaff K (OPAL Collaboration), Adel K, Adloff C (H1 Collaboration), Altarelli G, Bailey J (CERN Muon Storage Ring Collaboration), Barnett R M, Bartolomeo N, Bollini C G, Breitweg J (ZEUS Collaboration), Calmet J, Deshpande N G, Eidelman S, Gonzalez-Garcia M C, He X-G, Jackiw R, Kinoshita T, Kinoshita T, M C Gonzalez-Garcia, Méry P, Pallante E, Peris S, Peskin M E, Peskin M E, Roberts B L, S F Novaes, Slavnov A A, Takahashi Y, The LEP Collaborations (ALEPH   +29 more
core   +2 more sources

Vacuum stability with radiative Yukawa couplings

Journal of High Energy Physics, 2022
We explore the electroweak vacuum stability in the framework of a recently proposed paradigm for the origin of Yukawa couplings. These arise as low energy effective couplings radiatively generated by portal interactions with a hidden, or dark, sector at ...
Emidio Gabrielli, Luca Marzola, Kristjan Müürsepp, Ruiwen Ouyang   +3 more
doaj   +1 more source

Multipole expansion for the electron-nucleus scattering at high energies in the unified electroweak theory

Physics Letters B, 2023
The paper presents the multipole expansion for the electron-nucleus scattering cross section at high energies within the framework of the unified electroweak theory.
Z.P. Luong, M.T. Vo
doaj   +1 more source

Cancellation Mechanism for Dark-Matter-Nucleon Interaction. [PDF]

Physical Review Letters, 2017
We consider a simple Higgs portal dark-matter model, where the standard model is supplemented with a complex scalar whose imaginary part plays the role of weakly interacting massive particle dark matter (DM).
C. Gross, O. Lebedev, Takashi Toma
semanticscholar   +1 more source

Measurement of the weak mixing angle at a Super Charm-Tau factory with data-driven monitoring of the average electron beam polarization

Journal of High Energy Physics, 2020
A method for measuring the average longitudinal polarization of the electron beam at an electron-positron collider operating near the J/ψ resonance is proposed. The method utilizes the differential cross-section of J / ψ → Λ → p π − Λ → p ¯ π + $$ J/\psi
A. Bondar, A. Grabovsky, A. Reznichenko, A. Rudenko, V. Vorobyev   +4 more
doaj   +1 more source

N-jettiness in electroweak high-energy processes

Journal of High Energy Physics, 2022
We study N-jettiness in electroweak processes at extreme high energies, in which the mass of the weak gauge bosons can be regarded as small. The description of the scattering process such as e − e + → μ − μ + + X is similar to QCD.
Junegone Chay, Taewook Ha, Taehyun Kwon
doaj   +1 more source

Dynamics of Electroweak Phase Transition In Singlet-Scalar Extension of the Standard Model [PDF]

, 2017
An addition to the Standard Model of a real, gauge-singlet scalar field, coupled via a Higgs portal interaction, can reopen the possibility of a strongly first-order electroweak phase transition (EWPT) and successful electroweak baryogenesis (EWBG). If a
G. Kurup, M. Perelstein
semanticscholar   +1 more source

Higgs vacuum stability and modified chaotic inflation

Physics Letters B, 2017
The issue of electroweak vacuum stability is studied in presence of a scalar field which participates in modifying the minimal chaotic inflation model.
Abhijit Kumar Saha, Arunansu Sil
doaj   +1 more source