Results 111 to 120 of about 61,183 (280)

Modified 3D Massive Abelian 2‐Form Theory With a Single Pseudoscalar Field as a Phantom Field: BRST Approach

open access: yesAdvances in High Energy Physics, Volume 2025, Issue 1, 2025.
We obtain the off‐shell nilpotent Becchi–Rouet–Stora–Tyutin (BRST) and anti‐BRST symmetry transformations (corresponding to the infinitesimal classical gauge symmetry transformations) for the modified massive three (2 + 1)‐dimensional (3D) Abelian two‐form gauge theory with a single pseudoscalar field. The latter field (having the negative kinetic term
S. K. Panja   +3 more
wiley   +1 more source

Evidence for a new pseudoscalar meson

open access: yesPhysics Letters B, 1981
Abstract Performing a PWA of the π − π − π + system over the −t p/p range 0.2 to 0.4 GeV 2 we find evidence for a J P = 0 − , J G =1 − meson of mass 1342 ± 20 MeV and width 220 ±70 MeV decaying into ϵπ. This state is produced by natural parity exchange with a slope similar to that of elastic scattering.
M. Bonesini   +13 more
openaire   +3 more sources

Combined search for anomalous pseudoscalar HVV couplings in VH(H→bb‾) production and H→VV decay

open access: yesPhysics Letters B, 2016
A search for anomalous pseudoscalar couplings of the Higgs boson H to electroweak vector bosons V (=W or Z) in a sample of proton–proton collision events corresponding to an integrated luminosity of 18.9 fb−1 at a center-of-mass energy of 8 TeV is ...
V. Khachatryan   +2 more
doaj   +1 more source

On unfolded approach to off-shell supersymmetric models

open access: yesPhysics Letters B, 2023
We construct and analyze unfolded off-shell systems for chiral and vector supermultiplets using multispinor formalism and external currents. We find that auxiliary variables of multispinor formalism allow for the interesting reorganization of the ...
N.G. Misuna
doaj   +1 more source

Possible explanation of the electron positron anomaly at 17 MeV in 8Be transitions through a light pseudoscalar [PDF]

open access: yes, 2016
A bstractWe estimate the values of Yukawa couplings of a light pseudoscalar A with a mass of about 17 MeV, which would explain the 8Be anomaly observed in the Atomki pair spectrometer experiment.
U. Ellwanger, S. Moretti
semanticscholar   +1 more source

Asymptotic Behavior of Saxion–Axion System in Stringy Quintessence Model

open access: yesFortschritte der Physik, Volume 72, Issue 11, November 2024.
Abstract The late time behavior of the slow‐roll parameter in the stringy quintessence model is studied when axion as well as saxion are allowed to move. Even though the potential is independent of the axion at tree level, the axion can move through its coupling to the saxion and the background geometry.
Min‐Seok Seo
wiley   +1 more source

One-loop pseudoscalar mass in a 2HDM with a Z 3 symmetry

open access: yesJournal of High Energy Physics
A two-Higgs doublet model with a discrete Z 3 symmetry acquires, in its scalar and gauge sectors, an accidental continuous U(1) symmetry. One therefore finds, after spontaneous symmetry breaking of those symmetries, that a massless pseudoscalar arises ...
P. M. Ferreira, Tomás F. Pinto
doaj   +1 more source

Search for an exotic decay of the Higgs boson to a pair of light pseudoscalars in the final state with two b quarks and two τ leptons in proton–proton collisions at s=13TeV

open access: yesPhysics Letters B, 2018
A search for an exotic decay of the Higgs boson to a pair of light pseudoscalar bosons is performed for the first time in the final state with two b quarks and two τ leptons. The search is motivated in the context of models of physics beyond the standard
A.M. Sirunyan   +2300 more
doaj   +1 more source

Bounds on very weakly interacting ultra light scalar and pseudoscalar dark matter from quantum gravity

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
In this paper we consider very weakly interacting and ultra light scalar and pseudoscalar dark matter candidates. We show that quantum gravity has important implications for such models and that the masses of the singlet scalar and pseudoscalar fields ...
Xavier Calmet, Folkert Kuipers
doaj   +1 more source

Electron-nucleus scalar-pseudoscalar interaction in PbF: Z-vector study in the relativistic coupled-cluster framework

open access: yes, 2017
The scalar-pseudoscalar interaction constant of PbF in its ground state electronic configuration is calculated using the Z-vector method in the relativistic coupled-cluster framework.
Nayak, Malaya K.   +4 more
core   +1 more source

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