Search for massive long-lived particles decaying semileptonically at root s=13 TeV

Aaij, R; Abdelmotteleb, ASW; Beteta, C Abellan; Gallego, FJ Abudinen; Ackernley, T; Adeva, B; Adinolfi, M; Afsharnia, H; Agapopoulou, C; Aidala, CA; Aiola, S; Ajaltouni, Z; Akar, S; Albrecht, J; Alessio, F; Alexander, M; Alfonso Albero, A; Aliouche, Z; Alkhazov, G; Cartelle, P Alvarez; Amato, S; Amey, JL; Amhis, Y; An, L; Anderlini, L; Andreianov, A; Andreotti, M; Archilli, F; Artamonov, A; Artuso, M; Arzymatov, K; Aslanides, E; Atzeni, M; Audurier, B; Bachmann, S; Bachmayer, M; Back, JJ; Baladron Rodriguez, P; Balagura, V; Baldini, W; Leite, J Baptista; Barbetti, M; Barlow, RJ; Barsuk, S; Bartolini, M; Baryshnikov, F; Basels, JM; Bashir, S; Bassi, G; Batsukh, B; Battig, A; Bay, A; Beck, A; Becker, M; Bedeschi, F; Bediaga, I; Beiter, A; Belavin, V; Belin, S; Bellee, V; Belous, K; Belov, I; Belyaev, I; Bencivenni, G; Ben-Haim, E; Berezhnoy, A; Bernet, R; Berninghoff, D; Bernstein, HC; Bertella, C; Bertolin, A; Betancourt, C; Betti, F; Bezshyiko, Ia; Bhasin, S; Bhom, J; Bian, L; Bieker, MS; 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Authors

Aaij, R

Abdelmotteleb, ASW

Beteta, C Abellan

Gallego, FJ Abudinen

Ackernley, T

Adeva, B

Adinolfi, M

Publication Date

2022-04-28

Journal Title

EUROPEAN PHYSICAL JOURNAL C

ISSN

1434-6044

Publisher

Springer Berlin Heidelberg

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Article

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VoR

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Citation

Aaij, R., Abdelmotteleb, A., Beteta, C. A., Gallego, F. A., Ackernley, T., Adeva, B., Adinolfi, M., et al. (2022). Search for massive long-lived particles decaying semileptonically at root s=13 TeV. EUROPEAN PHYSICAL JOURNAL C, 82 (4) https://doi.org/10.1140/epjc/s10052-022-10186-3

Abstract

A search is performed for massive long-lived particles (LLP) decaying semileptonically into a muon and two quarks. Two kinds of LLP production processes were considered. In the first, a Higgs-like boson with mass from 30 to 200 GeV is produced by gluon fusion and decays into two LLPs. The analysis covers LLP mass values from 10 GeV up to about one half the Higgs-like boson mass. The second LLP production mode is directly from quark interactions, with LLP masses from 10 to 90 GeV. The LLP lifetimes considered range from 5 to 200 ps. This study uses LHCb data collected from proton-proton collisions at sqrt(s)=13 TeV, corresponding to an integrated luminosity of 5.4 1/fb. No evidence of these long-lived states has been observed, and upper limits on the production cross-section times branching ratio have been set for each model considered.

Keywords

Regular Article - Experimental Physics

Identifiers

arxiv: arxiv:2110.07293, s10052-022-10186-3, 10186

External DOI: https://doi.org/10.1140/epjc/s10052-022-10186-3

This record's URL: https://www.repository.cam.ac.uk/handle/1810/336571

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http://creativecommons.org/licenses/by/4.0/

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