scispace - formally typeset
Open AccessJournal ArticleDOI

Measurement of the B → J/ψK*(892) decay amplitudes

Bernard Aubert, +611 more
- 10 Dec 2001 - 
- Vol. 87, Iss: 24, pp 241801
Reads0
Chats0
TLDR
In this article, the decay amplitudes in B+J/psi K^*(892) channels were measured using 20.7 fb-1 of data collected at the Upsilon(4S) resonance with the BABAR detector at PEP-II.
Abstract
We present a measurement of the decay amplitudes in B-->J/psi K^*(892) channels using 20.7 fb-1 of data collected at the Upsilon(4S) resonance with the BABAR detector at PEP-II. We measure a P-wave fraction R_perp = (16.0+/-3.2+/-1.4)% and a longitudinal polarization fraction (59.7+/-2.8+/-2.4)%. The measurement of a relative phase that is neither 0 nor pi, phi_ll = 2.50+/-0.20+/-0.08 radians, favors a departure from the factorization hypothesis. Although the decay B-->J/psi Kpi proceeds mainly via K^*(892), there is also evidence for K^*_2(1430) and Kpi S-wave contributions.

read more

Content maybe subject to copyright    Report

Citations
More filters
Journal ArticleDOI

B, D and K decays

Gerhard Buchalla, +126 more
TL;DR: In this article, the authors provide a coherent, up-to-date picture of the status of flavour physics before the start of the LHC and initiate activities on the path towards integrating information on NP from high-pT and flavour data.
Journal ArticleDOI

Measurement of the CP asymmetry amplitude sin2β with B0 mesons

Bernard Aubert, +560 more
TL;DR: In this paper, the amplitude of the CP asymmetry is derived from the decay-time distributions in such events, which is consistent with the standard model expectation of no direct CP violation in these modes.
Journal ArticleDOI

B, D and K decays

Gerhard Buchalla, +128 more
TL;DR: In this article, the authors provide a coherent, up-to-date picture of the status of flavour physics before the start of the LHC and initiate activities on the path towards integrating information on NP from high-pT and flavour data.
Journal ArticleDOI

Measurement of theCPAsymmetry Amplitudesin2βwithB0Mesons

B. Aubert, +558 more
TL;DR: Results on time-dependent CP asymmetries in neutral B decays to several CP eigenstates are presented and the magnitude of lambda is consistent with unity, in agreement with the standard model expectation of no direct CP violation in these modes.
Journal ArticleDOI

CP asymmetry, branching ratios, and isospin breaking effects of B→K * γ with the perturbative QCD approach

TL;DR: In this paper, the branching ratio, direct $CP$ asymmetry, and isospin breaking effects within the standard model in the framework of perturbative QCD are computed.
Related Papers (5)

Observation of Large CP Violation in the Neutral B Meson System

Kazuo Abe, +250 more

Measurement of decay amplitudes of B→J/ψK*, ψ(2S)K*, and χc1K* with an angular analysis

Bernard Aubert, +574 more
- 20 Aug 2007 -