English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/110512
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

First search for exotic Z boson decays into photons and neutral pions in hadron collisions

AuthorsAaltonen, T.; Casal, Bruno ; Cuevas, Javier ; Gómez, G. ; Palencia, Enrique ; Ruiz Jimeno, Alberto ; Scodellaro, Luca ; Vilar, Rocío ; Vizán, J. ; CDF Collaboration
Issue Date2014
PublisherAmerican Physical Society
CitationPhysical Review Letters 112: 111803 (2014)
AbstractA search for forbidden and exotic Z boson decays in the diphoton mass spectrum is presented for the first time in hadron collisions, based on data corresponding to 10.0fb-1 of integrated luminosity from proton-antiproton collisions at s=1.96TeV collected by the CDF experiment. No evidence of signal is observed, and 95% credibility level Bayesian upper limits are set on the branching ratios of decays of the Z boson to a photon and neutral pion (which is detected as a photon), a pair of photons, and a pair of neutral pions. The observed branching ratio limits are 2.01×10-5 for Z→π0γ, 1.46×10-5 for Z→γγ, and 1.52×10-5 for Z→π0π0. The Z→π0γ and Z→γγ limits improve the most stringent results from other experiments by factors of 2.6 and 3.6, respectively. The Z→π0π0 branching ratio limit is the first experimental result on this decay. © 2014 American Physical Society.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevLett.112.111803
URIhttp://hdl.handle.net/10261/110512
DOI10.1103/PhysRevLett.112.111803
Identifiersdoi: 10.1103/PhysRevLett.112.111803
issn: 0031-9007
e-issn: 1079-7114
Appears in Collections:(IFCA) Artículos
Files in This Item:
File Description SizeFormat 
exotic Z boson decays.pdf283,03 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.