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Search for heavy neutral leptons in W+→μ+μ±jet decays.

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Title: Search for heavy neutral leptons in W+→μ+μ±jet decays.
Authors: Aaij, R.1 (AUTHOR), Abellán Beteta, C.2 (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), Alfonso Albero, A.13 (AUTHOR), Aliouche, Z.14 (AUTHOR), Alkhazov, G.15 (AUTHOR), Alvarez Cartelle, P.11 (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, p1-15. 15p.
Subjects: Proton-proton interactions, Standard model (Nuclear physics), Neutrinos, Muons, Bosons
Abstract: A search is performed for heavy neutrinos in the decay of a W boson into two muons and a jet. The data set corresponds to an integrated luminosity of approximately 3.0 fb - 1 of proton–proton collision data at centre-of-mass energies of 7 and 8 TeV collected with the LHCb experiment. Both same-sign and opposite-sign muons in the final state are considered. Data are found to be consistent with the expected background. Upper limits on the coupling of a heavy neutrino with the Standard Model neutrino are set at 95 % confidence level in the heavy-neutrino mass range from 5 to 50 GeV/ c 2 . These are of the order of 10 - 3 for lepton-number-conserving decays and of the order of 10 - 4 for lepton-number-violating heavy-neutrino decays. [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 heavy neutral leptons in W+→μ+μ±jet decays.
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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, p1-15. 15p.
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  Data: A search is performed for heavy neutrinos in the decay of a W boson into two muons and a jet. The data set corresponds to an integrated luminosity of approximately 3.0 fb - 1 of proton–proton collision data at centre-of-mass energies of 7 and 8 TeV collected with the LHCb experiment. Both same-sign and opposite-sign muons in the final state are considered. Data are found to be consistent with the expected background. Upper limits on the coupling of a heavy neutrino with the Standard Model neutrino are set at 95 % confidence level in the heavy-neutrino mass range from 5 to 50 GeV/ c 2 . These are of the order of 10 - 3 for lepton-number-conserving decays and of the order of 10 - 4 for lepton-number-violating heavy-neutrino decays. [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/s10052-021-08973-5
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