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

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URI: http://hdl.handle.net/10902/1943
ISSN: 0031-9007
ISSN: 1079-7114
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Author
Aaltonen, Timo Antero; Álvarez González, Bárbara; Amerio, Silvia; Amidei, Dante; Anastassov, Anton; Annovi, Alberto; Antos, Jaroslav; Apollinari, Giorgio; Appel, Jeffrey A.; Casal Laraña, Bruno; Cuevas Maestro, Francisco Javier; Gómez Gramuglio, Gervasio; Palencia Cortezón, Enrique; Rodrigo Anoro, TeresaAutoridad Unican; Ruiz Jimeno, AlbertoAutoridad Unican; Scodellaro, Luca; Vila Álvarez, Ivan; Vilar Cortabitarte, RocíoAutoridad Unican; Vizán García, Jesús ManuelAutoridad Unican; [et al.]
Date
2011-03-21
Derechos
© 2011 American Physical Society
Publicado en
Physical Review Letters, vol. 106, iss. 12, art. num. 121801 (2011)
Publisher
American Physical Society
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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.
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