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Searches for Majorana neutrinos in B-decays

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LHCb Collaboration (Including: Back, J. J., Dossett, D., Gershon, T. J., Harrison, P. F., Kreps, Michal, Latham, Thomas, Pilar, T., Poluektov, Anton, Reid, M. M., Silva Coutinho, R., Whitehead, M. (Mark) and Williams, M. P.). (2012) Searches for Majorana neutrinos in B-decays. Physical Review D, Vol.85 (No.11). ISSN 1550-7998

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Official URL: http://dx.doi.org/10.1103/PhysRevD.85.112004

Abstract

Searches for heavy Majorana neutrinos in B- decays in final states containing hadrons plus a μ-μ- pair have been performed using 0.41 fb-1 of data collected with the LHCb detector in proton-proton collisions at a center-of-mass energy of 7 TeV. The D+μ-μ- and D*+μ-μ- final states can arise from the presence of virtual Majorana neutrinos of any mass. Other final states containing π+, Ds+, or D0π+ can be mediated by an on-shell Majorana neutrino. No signals are found and upper limits are set on Majorana neutrino production as a function of mass, and also on the B- decay branching fractions.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Science > Physics
Library of Congress Subject Headings (LCSH):	B mesons -- Decay, Proton-proton interactions, Large Hadron Collider (France and Switzerland)
Journal or Publication Title:	Physical Review D
Publisher:	American Physical Society
ISSN:	1550-7998
Date:	2012
Volume:	Vol.85
Number:	No.11
Identification Number:	10.1103/PhysRevD.85.112004
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	Brazil. Coordenação do Aperfeiçoamento de Pessoal de Nível Superior (CAPES), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ), Financiadora de Estudos e Projetos (Brazil) (FINEP), European Organization for Nuclear Research (CERN), Guo jia zi ran ke xue ji jin wei yuan hui (China) [National Natural Science Foundation of China] (NSFC), Centre national de la recherche scientifique (France) (CNRS), Institut national de physique nucléaire et de physique des particules, Germany. Bundesministerium für Bildung und Forschung (BMBF), Deutsche Forschungsgemeinschaft (DFG), Hermann von Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF), Max-Planck-Gesellschaft zur Förderung der Wissenschaften [Max Planck Society for the Advancement of Science], Science Foundation Ireland (SFI), Istituto nazionale di fisica nucleare (INFN), Stichting voor Fundamenteel Onderzoek der Materie (FOM) [Foundation for Fundamental Research on Matter], Nederlandse Organisatie voor Wetenschappelijk Onderzoek [Netherlands Organisation for Scientific Research] (NWO), SCSR (Poland), Autoritatea Nationala pentru Cercetare Stiintifica (ANCS), Russia (Federation). Ministerstvo obrazovanii︠a︡ i nauki [Ministry of Education and Science], Federalʹnoe agentstvo po atomnoĭ ėnergii (Russia), Spain. Ministerio de Ciencia e Innovación (MICINN), Galicia (Spain : Region). Xunta, Catalonia (Spain), Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung [Swiss National Science Foundation] (SNSF), Switzerland. Staatssekretariat für Ausbildung und Forschung (SER), Nat︠s︡ionalʹna akademii︠a︡ nauk Ukraïny (NAS), Science and Technology Facilities Council (Great Britain) (STFC), National Science Foundation (U.S.) (NSF), Seventh Framework Programme (European Commission) (FP7/2007-2013), Auvergne (France)
References:	[1] E. Majorana, Teoria simmetrica dell 0elettrone e del positrone, Nuovo Cim. 14 (1937) 171. [2] F. T. Avignone III, S. R. Elliott, and J. Engel, Double beta decay, Majorana neutri- nos, and neutrino mass, Rev. Mod. Phys. 80 (2008) 481, arXiv:0708.1033. [3] Particle Data Group, K. Nakamura et al., Review of particle physics, J. Phys. G37 (2010) 075021. [4] BELLE collaboration, O. Seon et al., Search for lepton-number-violating B+ ! D
URI:	http://wrap.warwick.ac.uk/id/eprint/48039