A search is performed for the lepton number violating decay B+ → h− μ+ μ+, where h− represents a K− or a π−, using an integrated luminosity of 36 pb^−1 of data collected with the LHCb detector. The decay is forbidden in the standard model but allowed in models with a Majorana neutrino. No signal is observed in either channel and limits of B(B+ → K− μ+ μ+) < 5.4 x 10^−8 and B(B+ → π− μ+ μ+) < 5.8 x 10^−8 are set at the 95% confidence level. These improve the previous best limits by factors of 40 and 30, respectively.

R. Aaij, C. Abellan Beteta, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, et al. (2012). Search for Lepton Number Violating Decays B+ → π− μ+ μ+ and B+ → K− μ+ μ+. PHYSICAL REVIEW LETTERS, 108(10), 1-8 [10.1103/PhysRevLett.108.101601].

Search for Lepton Number Violating Decays B+ → π− μ+ μ+ and B+ → K− μ+ μ+

CARBONE, ANGELO;GALLI, DOMENICO;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;
2012

Abstract

A search is performed for the lepton number violating decay B+ → h− μ+ μ+, where h− represents a K− or a π−, using an integrated luminosity of 36 pb^−1 of data collected with the LHCb detector. The decay is forbidden in the standard model but allowed in models with a Majorana neutrino. No signal is observed in either channel and limits of B(B+ → K− μ+ μ+) < 5.4 x 10^−8 and B(B+ → π− μ+ μ+) < 5.8 x 10^−8 are set at the 95% confidence level. These improve the previous best limits by factors of 40 and 30, respectively.
2012
R. Aaij, C. Abellan Beteta, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, et al. (2012). Search for Lepton Number Violating Decays B+ → π− μ+ μ+ and B+ → K− μ+ μ+. PHYSICAL REVIEW LETTERS, 108(10), 1-8 [10.1103/PhysRevLett.108.101601].
R. Aaij; C. Abellan Beteta; B. Adeva; M. Adinolfi; C. Adrover; A. Affolder; Z. Ajaltouni; J. Albrecht; F. Alessio; M. Alexander; G. Alkhazov; P. Alvar...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/114327
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