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Axion-like particles can couple to Standard Model gluons, electroweak gauge bosons, and massive fermions. A future multi-TeV muon collider provides a favorable environment to probe axion-like particles through multiple production channels,…

High Energy Physics - Phenomenology · Physics 2025-07-16 So Chigusa , Sudhakantha Girmohanta , Yuichiro Nakai , Yufei Zhang

We consider a fermionic dark matter (DM) particle in renormalizable Standard Model (SM) gauge interactions in a simple $t$-channel model. The DM particle interactions with SM fermions is through the exchange of scalar and vector mediators…

High Energy Physics - Phenomenology · Physics 2016-11-03 Ashok Goyal , Mukesh Kumar

The existence of an axion-like particle (ALP) would induce anomalous scattering of light by light. This process can be probed at the Large Hadron Collider in central exclusive production of photon pairs in proton-proton collisions by…

High Energy Physics - Phenomenology · Physics 2018-08-01 Cristian Baldenegro , Sylvain Fichet , Gero von Gersdorff , Christophe Royon

Motivated by the very recent cosmic-ray electron+positron excess observed by DAMPE collaboration, we investigate a Dirac fermion dark matter (DM) in the gauged $L_e - L_\mu$ model. DM interacts with the electron and muon via the…

High Energy Physics - Phenomenology · Physics 2018-05-09 Guang Hua Duan , Xiao-Gang He , Lei Wu , Jin Min Yang

Axion-like particles (ALPs) have been searched for with a quasi-parallel stimulated resonant photon-photon collider sensitive to the sub-eV mass range by focusing two-color near-infrared pulse lasers into a vacuum. In this work, we have…

Dark matter could be a thermal relic comprised of strongly interacting massive particles (SIMPs), where $3 \rightarrow 2$ interactions set the relic abundance. Such interactions generically arise in theories of chiral symmetry breaking via…

High Energy Physics - Phenomenology · Physics 2019-01-08 Yonit Hochberg , Eric Kuflik , Robert McGehee , Hitoshi Murayama , Katelin Schutz

In this work, prospects to probe an overlooked facet of axion-like particles (ALPs) -- their potential couplings to sterile neutrinos -- are presented. We found that mono-photon searches have the potential to constrain ALP couplings to…

High Energy Physics - Phenomenology · Physics 2020-08-18 Alexandre Alves , Alex G. Dias , Diego D. Lopes

Axion-like particles (ALP) are promising candidates to comprise all the dark matter in the universe. We investigate the ALP couplings to photons and electrons via astrophysical measurements through the search for very-high-energy gamma rays…

High Energy Astrophysical Phenomena · Physics 2025-01-23 Victor P. Goncalves , Emmanuel Moulin , Igor Reis , Aion Viana

We present a minimal model of fermionic dark matter (DM), where a singlet Dirac fermion can interact with the Standard Model (SM) particles via the torsion field of gravitational origin. In general, torsion can be realized as an…

High Energy Physics - Phenomenology · Physics 2020-04-15 Basabendu Barman , Tapobroto Bhanja , Debottam Das , Debaprasad Maity

The dynamics and detection possibility of a pseudo-FIMP (pFIMP) dark matter (DM) in the presence of a thermal DM have been studied in different contexts. The pFIMP phenomenology largely depends on the WIMP-like partner DM, as pFIMP…

High Energy Physics - Phenomenology · Physics 2025-08-07 Jayita Lahiri , Dipankar Pradhan , Abhik Sarkar

Fermion dark matter (DM) interacting with the standard model through a Higgs portal requires non-renormalizable operators, signaling the presence of new mediator states at the electroweak scale. Collider signatures that involve the…

High Energy Physics - Phenomenology · Physics 2015-06-24 Ayres Freitas , Susanne Westhoff , Jure Zupan

Axions or more generally axion-like particles (ALPs) are pseudo-scalar particles predicted by many extensions of the Standard Model of particle physics (SM) and considered as highly viable candidates for dark matter (DM) in the universe. If…

High Energy Astrophysical Phenomena · Physics 2019-11-25 Ahmed Ayad , Geoff Beck

We explore the possibility of searching for axionlike particle (ALP) by $ep$ collisions via the subprocess $e^{-}\gamma \rightarrow e^{-}a \rightarrow e^{-}\gamma\gamma$. Sensitivities to the effective ALP-photon coupling…

High Energy Physics - Phenomenology · Physics 2019-07-18 Chong-Xing Yue , Ming-Ze Liu , Yu-Chen Guo

Axion-like particles (ALPs) are pseudo Nambu-Goldstone bosons associated with spontaneously broken global symmetries emerging in many extensions of the Standard Model. Assuming the most general effective Lagrangian up to dimension-5…

High Energy Physics - Phenomenology · Physics 2020-12-08 Gholamhossein Haghighat , Daruosh Haji Raissi , Mojtaba Mohammadi Najafabadi

X-ray telescopes are an exceptional tool for searching for new fundamental physics. In particular, X-ray observations have already placed world-leading bounds on the interaction between photons and axion-like particles (ALPs). ALPs are…

High Energy Physics - Phenomenology · Physics 2018-04-11 Francesca Day , Sven Krippendorf

Axions and axion-like particles (ALPs) appear in many extensions of the Standard Model and are being investigated as promising dark matter (DM) candidates. One viable methodology for their detection involves the investigation of the…

High Energy Astrophysical Phenomena · Physics 2024-04-18 Wen-Qing Guo , Zi-Qing Xia , Xiaoyuan Huang

The hypothetical axion and axion-like particles, feebly coupled with photon, have not yet been found in any experiment. With the improvement of laser technique, much stronger but shorter quasi-static electric and magnetic fields can be…

High Energy Physics - Phenomenology · Physics 2022-09-07 Shan Huang , Baifei Shen , Zhigang Bu , Xiaomei Zhang , Liangliang Ji , Shuhua Zhai

Future muon colliders with center-of-mass energy of $\mathcal{O}(1-10)$ TeV can provide a clean high-energy environment with advantages in searches for TeV-scale axion-like particles (ALPs), pseudo-Nambu-Goldstone bosons associated with…

High Energy Physics - Phenomenology · Physics 2024-05-24 So Chigusa , Sudhakantha Girmohanta , Yuichiro Nakai , Yufei Zhang

Contributions of a spin 0 axion-like particle (ALP) to lepton dipole moments, g-2 and EDMs, are examined. Barr-Zee and light-by-light loop effects from a light pseudoscalar ALP are found to be capable of resolving the long-standing muon g-2…

High Energy Physics - Phenomenology · Physics 2017-01-04 W. J. Marciano , A. Masiero , P. Paradisi , M. Passera

Axion Like Particles (ALPs), postulated to solve the strong-CP problem, are predicted to couple with photons in the presence of magnetic fields, which may lead to a significant change in the observed spectra of gamma-ray sources such as…

Cosmology and Nongalactic Astrophysics · Physics 2010-01-13 Miguel A. Sanchez-Conde , David Paneque , Elliott D. Bloom , Francisco Prada , Alberto Dominguez
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