Results 1 to 10 of about 356,517 (268)
Journal of High Energy Physics, 2023 In R-parity-violating (RPV) supersymmetric models, light neutralinos with masses from the GeV-scale down to even zero are still allowed by all laboratory constraints.
Herbi K. Dreiner +4 more
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A new light particle is being born
Journal of Physics: Conference Series, 2022 AbstractA few years ago we observed anomalous electron-positron angular correlations for the 18.15 MeV M1 transition of8Be. This was interpreted as the creation and decay of an intermediate bosonic particle with a mass ofm0c2=16.70±0.35(stat )±0.5(sys) MeV, which is now called X17.
A.J. Krasznahorkay +11 more
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Imprint of a new light particle at KOTO? [PDF]
Physical Review D, 2020 10 pages, with 10 figures and 4 appendices; v2: added 4 refs [9,10,17,35], no changes in wording; v3: proofred version to appear in PRD, many improvements/explanations in response to referees' comments and suggestions, added a new figure 3, conclusions not altered, 11 pages, with 11 figures and 4 ...
Yi Liao +3 more
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Searching for light neutralinos with a displaced vertex at the LHC
Journal of High Energy Physics, 2022 We study a bino-like light neutralino ( χ ~ 1 0 $$ {\overset{\sim }{\chi}}_1^0 $$ ) produced at the LHC from the decay of a scalar lepton ( e ~ L $$ \tilde{e}_L $$ ) through the process pp → e ~ L $$ \tilde{e}_L $$ → e χ ~ 1 0 $$ e{\overset{\sim }{\chi ...
Giovanna Cottin +4 more
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Journal of High Energy Physics, 2023 In this work, we propose a search for a single photon at FASER and FASER2, produced from decays of bino-like, sub-GeV lightest neutralinos in the theoretical framework of the R-parity-violating (RPV) Minimal Supersymmetric Standard Model (MSSM).
Herbi K. Dreiner +3 more
doaj +1 more source
Dilaton at the LHC: complementary probe of composite Higgs
Journal of High Energy Physics, 2023 The dilaton is predicted in various extensions of the standard model containing sectors with an approximate spontaneously-broken conformal invariance.
Sebastian Bruggisser +3 more
doaj +1 more source
Sgoldstino signal at FASER: prospects in searches for supersymmetry
Journal of High Energy Physics, 2022 We investigate FASER@LHC perspectives in searches for light (0.1–5 GeV) sgoldstinos in models with low energy (10–104 TeV) supersymmetry breaking. We consider flavor conserving and flavor violating couplings of sgoldstinos to Standard Model fermions and ...
Sergey Demidov +2 more
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Light by light scattering at high energy: a tool to reveal new particles [PDF]
Physics Letters B, 1999 8 pages and 3 figures, typos corrected.
Gounaris, G. J. +2 more
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Leptophilic gauge bosons at lepton beam dump experiments
Journal of High Energy Physics, 2023 It has been recently known that we can use beams of future lepton colliders, the International Linear Collider (ILC), the Compact Linear Collider (CLIC), and the muon collider, for beam dump experiment if a shield and a detector are installed behind the ...
Takeo Moroi, Atsuya Niki
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On (g − 2) μ from gauged U(1) X
Journal of High Energy Physics, 2022 We investigate an economical explanation for the (g − 2) μ anomaly with a neutral vector boson from a spontaneously broken U(1) X gauge symmetry. The Standard Model fermion content is minimally extended by 3 right-handed neutrinos.
Admir Greljo +3 more
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