Evidence for direct CP violation from Dalitz-plot analysis of B^{±}→K^{±}π^{∓}π^{±}

B Aubert; Christopher Hawkes; Nitesh Soni; Alan Watson

doi:10.1103/PhysRevD.78.012004

Evidence for direct CP violation from Dalitz-plot analysis of B^{±}→K^{±}π^{∓}π^{±}

B Aubert, Christopher Hawkes, Nitesh Soni, Alan Watson

Physics and Astronomy

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Abstract

We report a Dalitz-plot analysis of the charmless hadronic decays of charged B mesons to the final state K-+/-pi(-/+)pi(+/-). Using a sample of (383.2 +/- 4.2) x 10(6) B (B) over bar pairs collected by the BABAR detector, we measure CP-averaged branching fractions and direct CP asymmetries for intermediate resonant and nonresonant contributions. We find evidence for direct CP violation in the decay B-+/- -> rho(0)(770)K-+/-, with a CP-violation parameter A(CP) = (+44 +/- 10 +/- 4(-13)(+5))%.

Original language	English
Article number	012004
Journal	Physical Review D
Volume	78
Issue number	1
Early online date	1 Jul 2008
DOIs	https://doi.org/10.1103/PhysRevD.78.012004
Publication status	Published - 1 Jul 2008

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title = "Evidence for direct CP violation from Dalitz-plot analysis of B^{±}→K^{±}π^{∓}π^{±}",

abstract = "We report a Dalitz-plot analysis of the charmless hadronic decays of charged B mesons to the final state K-+/-pi(-/+)pi(+/-). Using a sample of (383.2 +/- 4.2) x 10(6) B (B) over bar pairs collected by the BABAR detector, we measure CP-averaged branching fractions and direct CP asymmetries for intermediate resonant and nonresonant contributions. We find evidence for direct CP violation in the decay B-+/- -> rho(0)(770)K-+/-, with a CP-violation parameter A(CP) = (+44 +/- 10 +/- 4(-13)(+5))%.",

author = "B Aubert and Christopher Hawkes and Nitesh Soni and Alan Watson",

year = "2008",

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doi = "10.1103/PhysRevD.78.012004",

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T1 - Evidence for direct CP violation from Dalitz-plot analysis of B^{±}→K^{±}π^{∓}π^{±}

AU - Aubert, B

AU - Hawkes, Christopher

AU - Soni, Nitesh

AU - Watson, Alan

PY - 2008/7/1

Y1 - 2008/7/1

N2 - We report a Dalitz-plot analysis of the charmless hadronic decays of charged B mesons to the final state K-+/-pi(-/+)pi(+/-). Using a sample of (383.2 +/- 4.2) x 10(6) B (B) over bar pairs collected by the BABAR detector, we measure CP-averaged branching fractions and direct CP asymmetries for intermediate resonant and nonresonant contributions. We find evidence for direct CP violation in the decay B-+/- -> rho(0)(770)K-+/-, with a CP-violation parameter A(CP) = (+44 +/- 10 +/- 4(-13)(+5))%.

AB - We report a Dalitz-plot analysis of the charmless hadronic decays of charged B mesons to the final state K-+/-pi(-/+)pi(+/-). Using a sample of (383.2 +/- 4.2) x 10(6) B (B) over bar pairs collected by the BABAR detector, we measure CP-averaged branching fractions and direct CP asymmetries for intermediate resonant and nonresonant contributions. We find evidence for direct CP violation in the decay B-+/- -> rho(0)(770)K-+/-, with a CP-violation parameter A(CP) = (+44 +/- 10 +/- 4(-13)(+5))%.

U2 - 10.1103/PhysRevD.78.012004

DO - 10.1103/PhysRevD.78.012004

M3 - Article

SN - 1550-2368

SN - 2470-0029

VL - 78

JO - Physical Review D

JF - Physical Review D

IS - 1

M1 - 012004

ER -

Evidence for direct CP violation from Dalitz-plot analysis of B^{±}→K^{±}π^{∓}π^{±}

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