Author: Michael Borivoje Nikolich
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: Michael Borivoje Nikolich
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Book Description

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 195

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Book Description
Ds mesons are fully reconstructed from four final states using approximately 229fb-1 of data delivered by the PEP-II e+e- collider and collected by the BaBar experiment at the Stanford Linear Accelerator Centre during the period 1999 to 2004. Measurements of the exclusive branching fractions (average over charge-conjugate decays), B, of the decays D+s → K+[pi]0, D+s→ [pi]+K0 and D+s → [pi]+[pi]0 relative to the reference mode D+s → K+$\bar{K}$0 are presented.

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 195

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Book Description
Ds mesons are fully reconstructed from four final states using approximately 229fb-1 of data delivered by the PEP-II e+e- collider and collected by the BaBar experiment at the Stanford Linear Accelerator Centre during the period 1999 to 2004. Measurements of the exclusive branching fractions (average over charge-conjugate decays), B, of the decays D+s → K+?0, D+s→ ?+K0 and D+s → ?+?0 relative to the reference mode D+s → K+$ar{K}$0 are presented.

Author:
Publisher:
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Category :
Languages : en
Pages : 14

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The authors report on the evidence for the decays B° → D{sub s}?− and B° → D{sub s}− K+ and the results of a search for the decays B° → D*{sub s}+?− and B° → D*{sub s}− K+ from a sample of 84 million?(4S) decays into B meson pairs collected with the BaBar detector at the PEP II asymmetric-energy e+e− collider. The measured B° → D{sub s}+?− yield has a probability of less than 10−3 to be a fluctuation of the background and they measure the branching fraction?(B° → D{sub s}+?−) = (3.2 ± 0.9(stat.) ± 1.0 (syst.)) x 10−5. The measured B° → D{sub s}− K+ yield has a probability of less than 5 x 10−4 to be a fluctuation of the background and they measure the branching fraction?(B° → D{sub s}− K+) = (3.2 ± 1.0(stat.) ± 1.0(syst.)) x 10−5. They also set 90% C.L. limits?(B° → D*{sub s}+?−)

Author: D. Payne
Publisher:
ISBN:
Category :
Languages : en
Pages : 3

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A selection of rare decay results from BaBar are presented, from a data sample of 82 fb{sup -1} of data taken at the {Upsilon}(4S) resonance (corresponding to 88 x 10{sup 6} B{bar B} pairs).

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 68

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Author:
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Category :
Languages : en
Pages : 5

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We present results from BaBar experiment for the measurement of inclusive and exclusive branching fractions of B mesons into final states containing J/[psi], [psi](2S) and [chi]c. The contributions of CP even and odd amplitudes in the decay B° 2!J/[psi]K*° are determined from an angular analysis. We report the measurements of the branching ratios B° 2!D* D*− and D* D*− K{sub S}°, and the study of exclusive two-body and quasi-two-body charmless decays. The branching fraction of the decay B° 2!K*°[gamma] has been determined and the corresponding CP asymmetry has been measured.

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Category :
Languages : en
Pages : 6

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In the spectator model, the lowest lying bound state of the charm-strange quarks, the Ds meson, is predicted to decay via W emission from the charm quark and form states with s{bar s} hidden strangeness. The conventional hadronic modes will contain K{bar K}, [phi] and the f0(975), which is considered to be the J{sup pc} = 0{sup ++} isoscalar s{bar s} meson. Hadronic decays of the Ds meson have been measured in relatively few modes and all modes are measured relative to the [phi][pi] mode. In this paper, an upper limit for the absolute branching ratio of the Ds decay into the [phi][pi] mode and evidence for the decay, Ds → f0(975)[pi] is presented from the Mark III. 26 refs., 4 figs.