TY - JOUR
T1 - Lepton-number violation in Bs meson decays induced by an on-shell Majorana neutrino
AU - Mejía-Guisao, Jhovanny
AU - Milanés, Diego
AU - Quintero, Néstor
AU - Ruiz-Álvarez, José D.
N1 - Publisher Copyright:
© 2018 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the »https://creativecommons.org/licenses/by/4.0/» 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 SCOAP.
PY - 2018/4/1
Y1 - 2018/4/1
N2 - 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).
AB - 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).
UR - https://www.scopus.com/pages/publications/85046755578
U2 - 10.1103/PhysRevD.97.075018
DO - 10.1103/PhysRevD.97.075018
M3 - Article
AN - SCOPUS:85046755578
SN - 2470-0010
VL - 97
JO - Physical Review D
JF - Physical Review D
IS - 7
M1 - 075041
ER -