A search is performed for massive long-lived par- ticles (LLPs) decaying semileptonically into a muon and two quarks. Two kinds of LLP production processes were con- sidered. In the first, a Higgs-like boson with mass from 30 to 200 GeV/c2 is produced by gluon fusion and decays into two LLPs. The analysis covers LLP mass values from 10 GeV/c2 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 90GeV/c2. The LLP lifetimes considered range from 5 to 200 ps. This study uses LHCb data collected from proton-proton collisions at √s = 13 TeV , cor- responding to an integrated luminosity of 5.4 fb−1 . No evi- dence 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.

Search for massive long-lived particles decaying semileptonically at √s=13TeV / Aaij, R., Abdelmotteleb, A.S.W., Beteta, C.A., Gallego, F.J.A., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., Agapopoulou, C., Aidala, C.A., Aiola, S., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Albero, A.A., Aliouche, Z., Alkhazov, G., Cartelle, P.A., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 82:4(2022). [10.1140/epjc/s10052-022-10186-3]

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

Casse, G.;Sarti, A.;
2022

Abstract

A search is performed for massive long-lived par- ticles (LLPs) decaying semileptonically into a muon and two quarks. Two kinds of LLP production processes were con- sidered. In the first, a Higgs-like boson with mass from 30 to 200 GeV/c2 is produced by gluon fusion and decays into two LLPs. The analysis covers LLP mass values from 10 GeV/c2 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 90GeV/c2. The LLP lifetimes considered range from 5 to 200 ps. This study uses LHCb data collected from proton-proton collisions at √s = 13 TeV , cor- responding to an integrated luminosity of 5.4 fb−1 . No evi- dence 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.
2022
semileptonic decays, searches
01 Pubblicazione su rivista::01a Articolo in rivista
Search for massive long-lived particles decaying semileptonically at √s=13TeV / Aaij, R., Abdelmotteleb, A.S.W., Beteta, C.A., Gallego, F.J.A., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., Agapopoulou, C., Aidala, C.A., Aiola, S., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Albero, A.A., Aliouche, Z., Alkhazov, G., Cartelle, P.A., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 82:4(2022). [10.1140/epjc/s10052-022-10186-3]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1673243
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