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A Measurement of the Semileptonic Branching Fraction of the B_s Meson

Description: We report a measurement of the inclusive semileptonic branching fraction of the B{sub s} meson using data collected with the BABAR detector in the center-of-mass energy region above the {gamma}(4S) resonance. We use the inclusive yield of {phi} mesons and the {phi} yield in association with a high-momentum lepton to perform a simultaneous measurement of the semileptonic branching fraction and the production rate of B{sub s} mesons relative to all B mesons as a function of center-of-mass energy. The inclusive semileptonic branching fraction of the B{sub s} meson is determined to be {Beta}(B{sub s} {yields} {ell}{nu}X) = 9.5{sub -2.0}{sup +2.5}(stat){sub -1.9}{sup +1.1}(syst)%, where {ell} indicates the average of e and {mu}.
Date: June 12, 2012
Creator: Lees, J.P.; Poireau, V.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Martinelli, M. et al.
Partner: UNT Libraries Government Documents Department

Semileptonic B-Meson Decays at BaBar

Description: Abstract Not Provided
Date: August 28, 2013
Creator: Sigamani, Michael & /Queen Mary, U. of London
Partner: UNT Libraries Government Documents Department

Drift Time Measurement in the ATLAS Liquid Argon Electromagnetic Calorimeter using Cosmic Muons

Description: Abstract Not Provided
Date: July 8, 2013
Creator: Aad, G & /Freiburg U. /Oklahoma U. /Barcelona, IFAE /Geneva U. /Oxford U. /Baku, Inst. Phys. /Oklahoma State U. /Michigan State U. /Tel Aviv U. /Orsay, LAL /ICTP, Trieste /INFN, Udine /Brookhaven /Hampton U. /Yale U. /INFM, Cosenza /INFN, Cosenza /Queen Mary, U. of London /Rutherford /Brandeis U. /Granada U.
Partner: UNT Libraries Government Documents Department

Studies of the Performance of the ATLAS Detector Using Cosmic-Ray Muons

Description: Abstract Not Provided
Date: June 12, 2013
Creator: Aad, G. & /Freiburg U. /Oklahoma U. /Barcelona, IFAE /Geneva U. /Oxford U. /Wedel, Fachhochsch. /Oklahoma State U. /Michigan State U. /Tel Aviv U. /Orsay, LAL /INFN, Udine /Brookhaven /Hampton U. /Yale U. /Munich U. /Queen Mary, U. of London /Rutherford /Brandeis U. /Mainz U., Inst. Phys. /Boston U. /SUNY, Stony Brook
Partner: UNT Libraries Government Documents Department

Readiness of the ATLAS Liquid Argon Calorimeter for LHC Collisions

Description: Abstract Not Provided
Date: July 9, 2013
Creator: Aad, G & /Marseille, CPPM /Oklahoma U. /Barcelona, IFAE /Geneva U. /Oxford U. /Baku, Inst. Phys. /Oklahoma State U. /Michigan State U. /Tel Aviv U. /Orsay, LAL /ICTP, Trieste /INFN, Udine /Brookhaven /Hampton U. /Yale U. /Calabria U. /INFN, Cosenza /Queen Mary, U. of London /Rutherford /Brandeis U. /CAFPE, Granada
Partner: UNT Libraries Government Documents Department

Observation of the Decay B- --> Ds(*) K- l- nubar

Description: We report the observation of the decay B{sup -} {yields} D{sub s}{sup (*)+} K{sup -}{ell}{sup -}{bar {nu}}{sub {ell}} based on 342 fb{sup -1} of data collected at the {Upsilon}(4S) resonance with the BABAR detector at the PEP-II e{sup +}e{sup -} storage rings at SLAC. A simultaneous fit to three D{sub s}{sup +} decay chains is performed to extract the signal yield from measurements of the squared missing mass in the B meson decay. We observe the decay B{sup -} {yields} D{sub s}{sup (*)+} K{sup -}{ell}{sup -}{bar {nu}}{sub {ell}} with a significance greater than five standard deviations (including systematic uncertainties) and measure its branching fraction to be {Beta}(B{sup -} {yields} D{sub s}{sup (*)+} K{sup -}{ell}{sup -}{bar {nu}}{sub {ell}}) = [6.13{sub -1.03}{sup +1.04}(stat.) {+-} 0.43(syst.) {+-} 0.51({Beta}(D{sub s}))] x 10{sup -4}, where the last error reflects the limited knowledge of the D{sub s} branching fractions.
Date: August 12, 2011
Creator: del Amo Sanchez, P.; Lees, J.P.; Poireau, V.; Prencipe, E.; Tisserand, V.; /Annecy, LAPP et al.
Partner: UNT Libraries Government Documents Department