Measurement of the branching fraction, and bounds on the CP-violating asymmetries, of neutral B decays to D*± D∓

B Aubert; Theresa Harrison; Christopher Hawkes; David Knowles; Richard Penny; Alan Watson; Nigel Watson

doi:10.1103/PhysRevLett.90.221801

Measurement of the branching fraction, and bounds on the CP-violating asymmetries, of neutral B decays to D*± D∓

B Aubert, Theresa Harrison, Christopher Hawkes, David Knowles, Richard Penny, Alan Watson, Nigel Watson

Physics and Astronomy

Research output: Contribution to journal › Article

18 Citations (Scopus)

Abstract

We present measurements of the branching fraction and CP-violating asymmetries for neutral B decays to D(*+/-)D-/+. The measurement uses a data sample of approximately 88x10(6) Upsilon(4S)-->BBmacr; decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy e(+)-e(-) collider. By fully reconstructing the D(*+/-)D-/+ decay products, we measure the branching fraction to be (8.8+/-1.0+/-1.3)x10(-4) and the time-integrated CP-violating asymmetry between the rates to D(*-)D+ and D(*+)D- to be A=-0.03+/-0.11+/-0.05. We also measure the time-dependent CP-violating asymmetry parameters to be S(-+)=-0.24+/-0.69+/-0.12, C(-+)=-0.22+/-0.37+/-0.10 for B-->D(*-)D+ and S(+-)=-0.82+/-0.75+/-0.14, C(+-)=-0.47+/-0.40+/-0.12 for B-->D(*+)D-. In each case, the first error is statistical and the second error is systematic.

Original language	English
Pages (from-to)	221801
Number of pages	1
Journal	Physical Review Letters
Volume	90
Issue number	22
Early online date	1 Jun 2003
DOIs	https://doi.org/10.1103/PhysRevLett.90.221801
Publication status	Published - 1 Jun 2003

Access to Document

10.1103/PhysRevLett.90.221801

Cite this

@article{b088835e1b2f436d8eb92c43aba7be61,

title = "Measurement of the branching fraction, and bounds on the CP-violating asymmetries, of neutral B decays to D*± D∓",

abstract = "We present measurements of the branching fraction and CP-violating asymmetries for neutral B decays to D(*+/-)D-/+. The measurement uses a data sample of approximately 88x10(6) Upsilon(4S)-->BBmacr; decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy e(+)-e(-) collider. By fully reconstructing the D(*+/-)D-/+ decay products, we measure the branching fraction to be (8.8+/-1.0+/-1.3)x10(-4) and the time-integrated CP-violating asymmetry between the rates to D(*-)D+ and D(*+)D- to be A=-0.03+/-0.11+/-0.05. We also measure the time-dependent CP-violating asymmetry parameters to be S(-+)=-0.24+/-0.69+/-0.12, C(-+)=-0.22+/-0.37+/-0.10 for B-->D(*-)D+ and S(+-)=-0.82+/-0.75+/-0.14, C(+-)=-0.47+/-0.40+/-0.12 for B-->D(*+)D-. In each case, the first error is statistical and the second error is systematic.",

author = "B Aubert and Theresa Harrison and Christopher Hawkes and David Knowles and Richard Penny and Alan Watson and Nigel Watson",

year = "2003",

month = jun,

day = "1",

doi = "10.1103/PhysRevLett.90.221801",

language = "English",

volume = "90",

pages = "221801",

journal = "Physical Review Letters",

issn = "1079-7114",

publisher = "American Physical Society (APS)",

number = "22",

}

TY - JOUR

T1 - Measurement of the branching fraction, and bounds on the CP-violating asymmetries, of neutral B decays to D*± D∓

AU - Aubert, B

AU - Harrison, Theresa

AU - Hawkes, Christopher

AU - Knowles, David

AU - Penny, Richard

AU - Watson, Alan

AU - Watson, Nigel

PY - 2003/6/1

Y1 - 2003/6/1

N2 - We present measurements of the branching fraction and CP-violating asymmetries for neutral B decays to D(*+/-)D-/+. The measurement uses a data sample of approximately 88x10(6) Upsilon(4S)-->BBmacr; decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy e(+)-e(-) collider. By fully reconstructing the D(*+/-)D-/+ decay products, we measure the branching fraction to be (8.8+/-1.0+/-1.3)x10(-4) and the time-integrated CP-violating asymmetry between the rates to D(*-)D+ and D(*+)D- to be A=-0.03+/-0.11+/-0.05. We also measure the time-dependent CP-violating asymmetry parameters to be S(-+)=-0.24+/-0.69+/-0.12, C(-+)=-0.22+/-0.37+/-0.10 for B-->D(*-)D+ and S(+-)=-0.82+/-0.75+/-0.14, C(+-)=-0.47+/-0.40+/-0.12 for B-->D(*+)D-. In each case, the first error is statistical and the second error is systematic.

AB - We present measurements of the branching fraction and CP-violating asymmetries for neutral B decays to D(*+/-)D-/+. The measurement uses a data sample of approximately 88x10(6) Upsilon(4S)-->BBmacr; decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy e(+)-e(-) collider. By fully reconstructing the D(*+/-)D-/+ decay products, we measure the branching fraction to be (8.8+/-1.0+/-1.3)x10(-4) and the time-integrated CP-violating asymmetry between the rates to D(*-)D+ and D(*+)D- to be A=-0.03+/-0.11+/-0.05. We also measure the time-dependent CP-violating asymmetry parameters to be S(-+)=-0.24+/-0.69+/-0.12, C(-+)=-0.22+/-0.37+/-0.10 for B-->D(*-)D+ and S(+-)=-0.82+/-0.75+/-0.14, C(+-)=-0.47+/-0.40+/-0.12 for B-->D(*+)D-. In each case, the first error is statistical and the second error is systematic.

U2 - 10.1103/PhysRevLett.90.221801

DO - 10.1103/PhysRevLett.90.221801

M3 - Article

C2 - 12857305

SN - 1079-7114

VL - 90

SP - 221801

JO - Physical Review Letters

JF - Physical Review Letters

IS - 22

ER -

Measurement of the branching fraction, and bounds on the CP-violating asymmetries, of neutral B decays to D*± D∓

Abstract

Access to Document

Fingerprint

Cite this