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A scalar field $\phi$ endowed with a trigonometric potential has been proposed to play the role of Dark Matter. A deep study of the cosmological evolution of linear perturbations, and its comparison to the Cold Dark Matter (CDM) and Fuzzy…

Cosmology and Nongalactic Astrophysics · Physics 2021-02-03 Francisco X. Linares Cedeño , Alma X. González-Morales , L. Arturo Ureña-López

The sensitivity of Standard Model Higgs boson searches at the Tevatron experiments with a mass 135<MH<190 GeV using the channel H->WW->ll+MET (l=e,mu) is discussed. Three new event selections involving Higgs in association with one or two…

High Energy Physics - Phenomenology · Physics 2008-11-26 B. Mellado , W. Quayle , Sau Lan Wu

The unprecedented rest-frame UV and optical coverage provided by JWST enables simultaneous constraints on the electron density (n$_{\rm e}$) and temperature (T$_{\rm e}$) of ionized gas in galaxies at z>5. We present a self-consistent…

This article presents searches for the $Z\gamma$ decay of the Higgs boson and for narrow high-mass resonances decaying to $Z\gamma$, exploiting $Z$ boson decays to pairs of electrons or muons. The data analysis uses 36.1 fb$^{-1}$ of $pp$…

High Energy Physics - Experiment · Physics 2017-10-31 ATLAS Collaboration

We study the contributions of an axion-like particle to the electroweak precision observables. The particle is assumed to couple with the standard model electroweak gauge bosons. We provide the formulae of the contributions valid for any…

High Energy Physics - Phenomenology · Physics 2023-05-31 Masashi Aiko , Motoi Endo

We present results from a search for solar bosonic dark matter using the annual modulation method with the COSINE-100 experiment. The results were interpreted considering three dark sector bosons models: solar dark photon; DFSZ and KSVZ…

We investigate the impact that warm dark matter (WDM) has in terms of 21cm intensity mapping in the post-reionization Universe at z = 3 - 5. We perform hydrodynamic simulations for 5 different models: cold dark matter and WDM with 1,2,3,4…

Cosmology and Nongalactic Astrophysics · Physics 2015-07-31 Isabella P. Carucci , Francisco Villaescusa-Navarro , Matteo Viel , Andrea Lapi

The QCD axion has been postulated to exist because it solves the strong CP problem. Furthermore, if it exists axions should be created in the early Universe and could account for all the observed dark matter. In particular, axion masses of…

High Energy Physics - Phenomenology · Physics 2023-09-14 Michael E. Tobar , Anton V. Sokolov , Andreas Ringwald , Maxim Goryachev

We investigate the one-loop effect of new charged scalar bosons on the Higgs potential at finite temperatures in the supersymmetric standard model with four Higgs doublet chiral superfields as well as a pair of charged singlet chiral…

High Energy Physics - Phenomenology · Physics 2015-05-30 Shinya Kanemura , Eibun Senaha , Tetsuo Shindou

A modification of the relation between axion mass and the PQ constant permits a relaxation of the astrophysical constraints, considerably enlarging the allowed axion parameter space. We develop this idea in this paper, discussing a model…

High Energy Physics - Phenomenology · Physics 2008-11-26 L. Gianfagna , M. Giannotti , F. Nesti

We report the indication of a long-term quasi-periodic oscillation (QPO) in the $\gamma$-ray emission of the BL Lac object 4FGL J1037.7+5711 (GB6 J1037+5711) using more than 17 years of monthly binned Fermi-LAT observations. Since blazar…

High Energy Astrophysical Phenomena · Physics 2026-05-01 Zahoor Malik , Sikandar Akbar , Zahir Shah , Seemin Rubab

We revisit the calculation of the electron, neutron, and proton electric dipole moments (EDMs) in the constrained minimal supersymmetric standard model (CMSSM). The relatively large mass of the Higgs boson, $m_H \simeq 125$ GeV coupled with…

High Energy Physics - Phenomenology · Physics 2023-04-19 Kunio Kaneta , Natsumi Nagata , Keith A. Olive , Maxim Pospelov , Liliana Velasco-Sevilla

We update cosmological bound on axion model. The contribution from the anharmonic effect and the newly introduced initial overshoot correction are considered. We present an explicit formula for the axion relic density in terms of the QCD…

High Energy Physics - Phenomenology · Physics 2009-02-02 Ji-Haeng Huh

A grid of stellar evolution models for Procyon A has been calculated. These models include the best physics available to us (including the latest opacities and equation of state) and are based on the revised astrometric mass of Girard et…

Astrophysics · Physics 2007-05-23 Brian Chaboyer , P. Demarque , D. B. Guenther

Far fewer gas giants have been caught in their accretion phase than mature ones are known. Extremely Large Telescope (ELT) instruments will have a higher sensitivity and a smaller inner working angle than instruments up to now, which should…

Earth and Planetary Astrophysics · Physics 2025-12-16 Gabriel-Dominique Marleau , Thomas Henning , Roy van Boekel , Myriam Benisty , Yuhiko Aoyama , Inga Kamp

We consider heavy neutral bosons in the 3-3-1 model with axionlike particles (331ALP), including the Higgs boson and the $Z^\prime$ boson which are outside the standard model (SM). Based on gluon-gluon fusion at the LHC, we investigate the…

High Energy Physics - Phenomenology · Physics 2026-04-09 T. T. Hieu , V. H. Binh , H. N. Long , H. T. Hung

We investigate the bounds on axionlike states from flavor-changing neutral current b->s decays, assuming the axion couples to the standard model through mixing with the Higgs sector. Such GeV-scale axions have received renewed attention in…

High Energy Physics - Phenomenology · Physics 2014-11-20 Marat Freytsis , Zoltan Ligeti , Jesse Thaler

We examine current Large Hadron Collider constraints on some simple $Z'$ models that significantly improve on Standard Model fits to $b\to s\mu^+\mu^-$ transition data. The models that we consider are the 'third family baryon number minus…

High Energy Physics - Phenomenology · Physics 2022-01-05 B. C. Allanach , J. M. Butterworth , Tyler Corbett

We report on searches for a standard model (SM) Higgs boson in $p\bar(p)$ collisions at a center of mass energy sqrt{s}=1.96 TeV with the CDF and D0 detectors using an integrated luminosity of more than 3.0/fb. For a SM Higgs with mass…

High Energy Physics - Experiment · Physics 2008-10-22 Michael Kirby