Energetic long-lived particles in the CMS muon chambers

Mitridate, Andrea; Papucci, Michele; Wang, Christina W.; Peña, Cristián; Xie, Si

doi:10.1103/physrevd.108.055040

Cited by 4 publications

(1 citation statement)

References 112 publications

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“…We are grateful to Yi [132][133][134][135]. We acknowledge the use of the computing server Arena317 @ZZU.…”

Section: Acknowledgmentsmentioning

confidence: 99%

Null energy condition violation during inflation and pulsar timing array observations

Ye,

Zhu,

Cai

2024

J. High Energ. Phys.

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Recently, evidence of stochastic gravitational wave background (SGWB) signals observed by pulsar timing array (PTA) collaborations, has prompted investigations into their origins. We explore the compatibility of a proposed inflationary scenario, incorporating an intermediate null energy condition (NEC)-violating phase, with the PTA observations. The NEC violation potentially amplifies the primordial tensor power spectrum, offering a promising explanation for PTA observations. Numerical analyses, primarily focused on NANOGrav’s 15-year results, reveal the model’s compatibility with PTA data. Notably, the model predicts a nearly scale-invariant GW spectrum in the mHz frequency range, which sets our scenario apart from other interpretations predicting a red primordial GW spectrum on smaller scales.

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“…We are grateful to Yi [132][133][134][135]. We acknowledge the use of the computing server Arena317 @ZZU.…”

Section: Acknowledgmentsmentioning

confidence: 99%

Null energy condition violation during inflation and pulsar timing array observations

Ye,

Zhu,

Cai

2024

J. High Energ. Phys.

View full text Add to dashboard Cite

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Probing axion-like particles at the Electron-Ion Collider

Balkin,

Hen,

et al. 2024

J. High Energ. Phys.

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The Electron-Ion Collider (EIC), a forthcoming powerful high-luminosity facility, represents an exciting opportunity to explore new physics. In this article, we study the potential of the EIC to probe the coupling between axion-like particles (ALPs) and photons in coherent scattering. The ALPs can be produced via photon fusion and decay back to two photons inside the EIC detector. In a prompt-decay search, we find that the EIC can set the most stringent bound for ma ≲ 20 GeV and probe the effective scales Λ ≲ 105 GeV. In a displaced-vertex search, which requires adopting an EM calorimeter technology that provides directionality, the EIC could probe ALPs with ma ≲ 1 GeV at effective scales Λ ≲ 107 GeV. Combining the two search strategies, the EIC can probe a significant portion of unexplored parameter space in the 0.2 < ma < 20 GeV mass range.

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