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Title: Lepton-number violation in Bs meson decays induced by an on-shell Majorana neutrino
Authors: Mejía-Guisao, Jhovanny
Milanés, Diego A.
Quintero, Néstor
Ruiz-Álvarez, José David
Issue Date: 1-Apr-2018
Publisher: American Physical Society
Abstract: Lepton-number violation can be induced by the exchange of an on-shell Majorana neutrino N in semileptonic |ΔL|=2 decays of the Bs meson, Bs0→P-π-μ+μ+ with P=K,Ds. We investigate the production of such a heavy sterile neutrino through these four-body μ+μ+ channels and explore the sensitivity that can be reached at the LHCb and CMS experiments. For heavy neutrino lifetimes of τN=[1,100,1000] ps and integrated luminosities collected of 10 and 50 fb-1 at the LHCb and 30, 300, and 3000 fb-1 at the CMS, we find a significant sensitivity on branching fractions of the orders BR(Bs0→K-π-μ+μ+) O(10-9-10-8) and BR(Bs0→Ds-π-μ+μ+) O(10-8-10-7). In the kinematically allowed mass ranges of mN[0.25,4.77] GeV and mN[0.25,3.29] GeV, respectively, we exclude regions on the parameter space (mN,|VμN|2) associated with the heavy neutrino, which could slightly improve the limits from B-→π+μ-μ- (LHCb). © 2018 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the »» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.
ISSN: 24700010
Appears in Collections:Artículos Científicos

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