OBSERVATION OF EXCLUSIVE TWO-BODY B DECAYS TO KAONS AND PIONS. PDF Download
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Author:
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Languages : en
Pages : 9
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Book Description
We have studied two-body charmless hadronic decays of B mesons into the final states??, K?, and KK. Using 3.3 million B{bar B} pairs collected with the CLEO-II detector, we have made the first observation of the decays B° → K?−, B+ → K°?+, and the sum of B+ →?+?° and B+ → K+?° decays (an average over charge-conjugate states is always implied). We place upper limits on branching fractions for the remaining decay modes.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 9
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Book Description
We have studied two-body charmless hadronic decays of B mesons into the final states??, K?, and KK. Using 3.3 million B{bar B} pairs collected with the CLEO-II detector, we have made the first observation of the decays B° → K?−, B+ → K°?+, and the sum of B+ →?+?° and B+ → K+?° decays (an average over charge-conjugate states is always implied). We place upper limits on branching fractions for the remaining decay modes.
Author: Alan Jay Magerkurth
Publisher:
ISBN:
Category :
Languages : en
Pages : 300
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Book Description
Author: Richard Wilson
Publisher: Richard Wilson
ISBN: 061542158X
Category : Physicists
Languages : en
Pages : 536
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Book Description
Author: Heather S. Krieg
Publisher:
ISBN:
Category : B mesons
Languages : en
Pages : 158
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Book Description
Author: 呂榮祥
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Diego Tonelli
Publisher:
ISBN: 9783838327563
Category :
Languages : en
Pages : 264
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Book Description
Author: Alan Astbury
Publisher: World Scientific
ISBN: 9814644919
Category : Science
Languages : en
Pages : 1899
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Book Description
These proceedings consist of plenary rapporteur talks covering topics of major interest to the high energy physics community and parallel sessions papers which describe recent research results and future plans.
Author:
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Category :
Languages : en
Pages : 28
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We present a study of ten B-meson decays to a D{sup (*)}, a proton-antiproton pair, and a system of up to two pions using BABAR's data set of 455 x 106 B{bar B} pairs. Four of the modes {bar B}° → D°p{bar p}, {bar B}° → D*°p{bar p}, {bar B}° → Dp{bar p}?−, {bar B}° → D{sup ast+}p{bar p}?− are studied with improved statistics compared to previous measurements; six of the modes (B− → D°p{bar p}?−, B− → D*°p{bar p}?−, {bar B}° → D°p{bar p}?−?+, {bar B}° → D*°p{bar p}?−?+, B− → D+p{bar p}?−?−, B− → D{sup ast+}p{bar p}?−?−) are first observations. The branching fractions for 3- and 5-body decays are suppressed compared to 4-body decays. Kinematic distributions for 3-body decays show non-overlapping threshold enhancements in m(p{bar p}) and m(D{sup (*)0}p) in the Dalitz plots. For 4-body decays, m(p?−) mass projections show a narrow peak with mass and full width of (1497.4 ± 3.0 ± 0.9)MeV/c2 and (47 ± 12 ± 4)MeV/c2, respectively, where the first (second) errors are statistical (systematic). For 5-body decays, mass projections are similar to phase space expectations. All results are preliminary.
Author: Shahram Rahatlou
Publisher:
ISBN:
Category :
Languages : en
Pages : 524
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
The authors present preliminary results of the analysis B[yields] h[pi][sup 0] and B[yields] hK[sup 0] decays (with h=[pi][sup[+-]], K[sup[+-]]) from a sample of approximately 60 million B[bar B] pairs collected by the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. They find evidence for a signal in B[sup+][yields][pi][sup+][pi][sup 0], and they measure the branching fraction[Beta](B[sup+][yields][pi][sup+][pi][sup 0])= (4.1[sub -1.0][sup+1.1][+-] 0.8) x 10[sup -6].
