Feebly Interacting Particles: FIPs at LHCb

J. Alimena; J. Boyd; G. Cacciapaglia; A. Casais Vidal; X. Cid Vidal; S. Collaviti; A. De Oyanguren Campos; G. Dalla Valle Garcia; G. Elor; G. Ferretti; D. Gorbunov; E. Goudzovski; J. Hajer; J. Jerhot; B. Kishor Jashal; V. Kholoimov; J. Klaric; F. Kling; E. Kriukova; Y. Kyselov; G. Lanfranchi; C. Langenbruch; S. Libralon; F. Martinez Vidal; A. Merli; M. Ovchynnikov; J. Pfaller; G. Perez; P. Reimitz; I. Sanderswood; L. Shchutska; E. Torro Pastor; Y. Tsai; A. Usachov; L. Vale Silva; C. Vázquez Sierra; F. Volle; J. Zhuo; J. Zurita

arXiv · 2510.05257

Feebly Interacting Particles: FIPs at LHCb

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Abstract

With the establishment and maturation of the experimental programs searching for new physics with sizeable couplings at the LHC, there is an increasing interest in the broader particle and astrophysics community for exploring the physics of light and feebly-interacting particles as a paradigm complementary to a New Physics sector at the TeV scale and beyond. FIPs@LHCb continues the successful series of the FIPs workshops, FIPs 2020 and FIPs 2022. The main focus of the workshop was to explore the LHCb potential to search for FIPs thanks to the new software trigger deployed during the recent upgrade. Equally important goals of the workshop were to update the available parameter space in the commonly used FIPs benchmarks by including recent results from the high energy physics community and to discuss recent theory progress necessary for a more accurate definition of observables related to FIP benchmarks. This document presents the summary of the talks presented at the workshops and the outcome of subsequent discussions.

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J. Alimena, J. Boyd, G. Cacciapaglia, A. Casais Vidal, X. Cid Vidal, S. Collaviti, A. De Oyanguren Campos, G. Dalla Valle Garcia, G. Elor, G. Ferretti, D. Gorbunov, E. Goudzovski, J. Hajer, J. Jerhot, B. Kishor Jashal, V. Kholoimov, J. Klaric, F. Kling, E. Kriukova, Y. Kyselov, G. Lanfranchi, C. Langenbruch, S. Libralon, F. Martinez Vidal, A. Merli, M. Ovchynnikov, J. Pfaller, G. Perez, P. Reimitz, I. Sanderswood, L. Shchutska, E. Torro Pastor, Y. Tsai, A. Usachov, L. Vale Silva, C. Vázquez Sierra, F. Volle, J. Zhuo, J. Zurita. 2025-10-06. Feebly Interacting Particles: FIPs at LHCb. https://arxiv.org/abs/2510.05257

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