Títol:
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Search for long-lived particles decaying to e ± μ∓ ν
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Autor/a:
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Calvo Gómez, Míriam; Golobardes, Elisabet; Vilasís Cardona, Xavier; LHCb Collaboration - CERN
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Altres autors:
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Universitat Ramon Llull. La Salle; CERN |
Abstract:
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Long-lived particles decaying to e±μ∓ν, with masses between 7 and 50GeV/c2 and lifetimes between 2 and 50ps, are searched for by looking at displaced vertices containing electrons and muons of opposite charges. The search is performed using 5.4fb−1 of p p collisions collected with the LHCb detector at a centre-of-mass energy of s√=13TeV. Three mechanisms of production of long-lived particles are considered: the direct pair production from quark interactions, the pair production from the decay of a Standard-Model-like Higgs boson with a mass of 125GeV/c2, and the charged current production from an on-shell W boson with an additional lepton. No evidence of these long-lived states is obtained and upper limits on the production cross-section times branching fraction are set on the different production modes. |
Data de publicació:
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03-2021 |
Matèries (CDU):
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539 - Constitució física de la matèria |
Matèries:
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Gran col·lisionador d'hadrons (França i Suïssa) Interaccions d'hadrons Partícules (Física nuclear) |
Drets:
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L'accés als continguts d'aquest document queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons:http://creativecommons.org/licenses/by/4.0/
© CERN |
Pàgines:
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16 p. |
Tipus de document:
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Article Article - Versió publicada |
Publicat per:
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Springer
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Publicat a:
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European Physical Journal C, 2021, Vol. 81, No. 261
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