We report on a search for B-s(0) -> mu(+)mu(-) and B-0 -> mu(+)mu(-) decays using proton-antiproton collision data at root s = 1.96 TeV corresponding to 10 fb(-1) of integrated luminosity collected by the CDF II detector at the Fermilab Tevatron collider. The observed number of B-0 candidates is consistent with background-only expectations and yields an upper limit on the branching fraction of B(B-0 -> mu(+)mu(-)) < 4.6 x 10(-9) at 95% confidence level. We observe an excess of B-s(0) candidates. The probability that the background processes alone could produce such an excess or larger is 0.94%. The probability that the combination of background and the expected standard model rate of B-s(0) -> mu(+)mu(-) could produce such an excess or larger is 6.8%. These data are used to determine a branching fraction B(B-s(0) -> mu(+)mu(-)) = (1.3(-0.7)(+0.9) x 10(-8) and provide an upper limit of B(B-s(0) -> mu(+)mu(-)) < 3.1 x 10(-8) at 95% confidence level. DOI: 10.1103/PhysRevD.87.072003

Search for B-s(0) -> mu+ mu(-) and B-0 -> mu+ mu(-) decays with the full CDF Run II data set

INTROZZI, GIANLUCA;
2013-01-01

Abstract

We report on a search for B-s(0) -> mu(+)mu(-) and B-0 -> mu(+)mu(-) decays using proton-antiproton collision data at root s = 1.96 TeV corresponding to 10 fb(-1) of integrated luminosity collected by the CDF II detector at the Fermilab Tevatron collider. The observed number of B-0 candidates is consistent with background-only expectations and yields an upper limit on the branching fraction of B(B-0 -> mu(+)mu(-)) < 4.6 x 10(-9) at 95% confidence level. We observe an excess of B-s(0) candidates. The probability that the background processes alone could produce such an excess or larger is 0.94%. The probability that the combination of background and the expected standard model rate of B-s(0) -> mu(+)mu(-) could produce such an excess or larger is 6.8%. These data are used to determine a branching fraction B(B-s(0) -> mu(+)mu(-)) = (1.3(-0.7)(+0.9) x 10(-8) and provide an upper limit of B(B-s(0) -> mu(+)mu(-)) < 3.1 x 10(-8) at 95% confidence level. DOI: 10.1103/PhysRevD.87.072003
2013
The Physics category includes resources of a broad, general nature that contain materials from all areas of physics, The category also includes resources specifically concerned with the following physics sub-fields: mathematical physics, particle and nuclear physics, physics of fluids and plasmas, quantum physics, and theoretical physics.
Esperti anonimi
Inglese
Internazionale
STAMPA
87
072003
COLLISIONS; TEVATRON; TEV
411
info:eu-repo/semantics/article
262
T., Aaltonen; S., Amerio; D., Amidei; A., Anastassov; A., Annovi; J., Antos; G., Apollinari; J. A., Appel; T., Arisawa; A., Artikov; J., Asaadi; W., A...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11571/851065
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