A search is performed for the lepton number violating decay B+ -> h(-)mu(+)mu(+), where h(-) represents a K- or a pi(-), 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+ -> h(-)mu(+)mu(+)) < 5.4 X 10(-8) and B(B+ -> h(-)mu(+)mu(+)) < 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.

Archilli, F., Carboni, G., Messi, R., Santovetti, E., The LHCb, C. (2012). Search for Lepton Number Violating Decays B+ -> pi(-)mu(+)mu(+) and B+ -> K-mu(+)mu(+). PHYSICAL REVIEW LETTERS, 108(10) [10.1103/PhysRevLett.108.101601].

Search for Lepton Number Violating Decays B+ -> pi(-)mu(+)mu(+) and B+ -> K-mu(+)mu(+)

Archilli, F
Membro del Collaboration Group
;
Carboni, G
Membro del Collaboration Group
;
Messi, R
Membro del Collaboration Group
;
Santovetti, E
Membro del Collaboration Group
;
2012-01-01

Abstract

A search is performed for the lepton number violating decay B+ -> h(-)mu(+)mu(+), where h(-) represents a K- or a pi(-), 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+ -> h(-)mu(+)mu(+)) < 5.4 X 10(-8) and B(B+ -> h(-)mu(+)mu(+)) < 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
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE
English
Archilli, F., Carboni, G., Messi, R., Santovetti, E., The LHCb, C. (2012). Search for Lepton Number Violating Decays B+ -> pi(-)mu(+)mu(+) and B+ -> K-mu(+)mu(+). PHYSICAL REVIEW LETTERS, 108(10) [10.1103/PhysRevLett.108.101601].
Archilli, F; Carboni, G; Messi, R; Santovetti, E; The LHCb, C
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/135256
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