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Open Access item Search for High Mass Resonances Decaying to Muon Pairs in √s=1.96  TeV pp̅ Collisions

Authors:Aaltonen, T.
Álvarez González, B.
Casal, Bruno
Cuevas, Javier
Gómez, G.
Palencia, Enrique
Rodrigo, Teresa
Ruiz Jimeno, Alberto
Scodellaro, Luca
Vila, Iván
Vilar, Rocío
Vizán, J.
Issue Date:Mar-2011
Publisher:American Physical Society
Citation:Physical Review Letters 106(12): 121801 (2011)
Abstract:We present a search for a new narrow, spin-1, high mass resonance decaying to μ+μ-+X, using a matrix-element-based likelihood and a simultaneous measurement of the resonance mass and production rate. In data with 4.6  fb-1 of integrated luminosity collected by the CDF detector in pp̅ collisions at √s=1960  GeV, the most likely signal cross section is consistent with zero at 16% confidence level. We therefore do not observe evidence for a high mass resonance and place limits on models predicting spin-1 resonances, including M>1071  GeV/c2 at 95% confidence level for a Z′ boson with the same couplings to fermions as the Z boson.
Description:7 páginas, 3 figuras, 1 tabla.-- PACS numbers: 14.70.Pw, 12.60.Cn, 13.85.Rm, 14.80.-j.-- CDF Collaboration: et al.
Publisher version (URL):http://dx.doi.org/10.1103/PhysRevLett.106.121801
URI:http://hdl.handle.net/10261/46580
ISSN:0031-9007
E-ISSNmetadata.dc.identifier.doi = DOI:1079-7114
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Appears in Collections:(IFCA) Artículos

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