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Search for long-lived particles decaying to e±μ∓ν.

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Title: Search for long-lived particles decaying to e±μ∓ν.
Authors: Aaij, R.1 (AUTHOR), Beteta, C. Abellán2 (AUTHOR), Ackernley, T.3 (AUTHOR), Adeva, B.4 (AUTHOR), Adinolfi, M.5 (AUTHOR), Afsharnia, H.6 (AUTHOR), Aidala, C. A.7 (AUTHOR), Aiola, S.8 (AUTHOR), Ajaltouni, Z.6 (AUTHOR), Akar, S.9 (AUTHOR), Albrecht, J.10 (AUTHOR), Alessio, F.11 (AUTHOR), Alexander, M.12 (AUTHOR), Albero, A. Alfonso13 (AUTHOR), Aliouche, Z.14 (AUTHOR), Alkhazov, G.15 (AUTHOR), Cartelle, P. Alvarez11 (AUTHOR), Amato, S.16 (AUTHOR), Amhis, Y.17 (AUTHOR), An, L.18 (AUTHOR)
Source: European Physical Journal C -- Particles & Fields. Mar2021, Vol. 81 Issue 3, p1-16. 16p.
Subjects: Particle decays, Pair production, Higgs bosons, Bosons, Muons
Abstract: Long-lived particles decaying to e ± μ ∓ ν , with masses between 7 and 50 GeV/ c 2 and lifetimes between 2 and 50 ps , are searched for by looking at displaced vertices containing electrons and muons of opposite charges. The search is performed using 5.4 fb - 1 of p p collisions collected with the LHCb detector at a centre-of-mass energy of s = 13 TeV . 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 125 GeV/ c 2 , 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. [ABSTRACT FROM AUTHOR]
Copyright of European Physical Journal C -- Particles & Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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  Data: Search for long-lived particles decaying to e±μ∓ν.
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  Data: <searchLink fieldCode="JN" term="%22European+Physical+Journal+C+--+Particles+%26+Fields%22">European Physical Journal C -- Particles & Fields</searchLink>. Mar2021, Vol. 81 Issue 3, p1-16. 16p.
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  Data: Long-lived particles decaying to e ± μ ∓ ν , with masses between 7 and 50 GeV/ c 2 and lifetimes between 2 and 50 ps , are searched for by looking at displaced vertices containing electrons and muons of opposite charges. The search is performed using 5.4 fb - 1 of p p collisions collected with the LHCb detector at a centre-of-mass energy of s = 13 TeV . 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 125 GeV/ c 2 , 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. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of European Physical Journal C -- Particles & Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1140/epjc/s10052-021-08994-0
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