First observation of the decays Bˉ0→D+K−π+π− and B−→D0K−π+π−.

The LHCb Collaboration; Matthew Needham; Franz Muheim; Peter Clarke; Yuehong Xie; Stephan Eisenhardt

doi:10.1103/PhysRevLett.108.161801

First observation of the decays Bˉ0→D+K−π+π− and B−→D0K−π+π−.

The LHCb Collaboration, Matthew Needham, Franz Muheim, Peter Clarke, Yuehong Xie, Stephan Eisenhardt

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

First observations of the Cabibbo suppressed decays B0bar -> D+ K- pi+ pi- and B- -> D0 K- pi+ pi- are reported using 35 pb^{-1} of data collected with the LHCb detector. Their branching fractions are measured with respect to the corresponding Cabibbo favored decays, from which we obtain B(B0bar -> D+ K- pi+ pi-)/B(B0bar -> D+ pi- pi+ pi-)=(5.9\pm1.1\pm0.5) x 10^{-2} and B(B- -> D0 K- pi+ pi-)/B(B- -> D0 pi- pi+ pi-)=(9.4\pm1.3\pm0.9) x 10^{-2}, where the uncertainties are statistical and systematic, respectively. The B- -> D0 K- pi+ pi- decay is particularly interesting, as it can be used in a similar way to B- -> D0 K- to measure the CKM phase gamma.

Original language	English
Pages (from-to)	161801
Number of pages	1
Journal	Physical Review Letters
Volume	108
Early online date	20 Jan 2012
DOIs	https://doi.org/10.1103/PhysRevLett.108.161801
Publication status	Published - 18 Apr 2012

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@article{8b5720c922a74d638978133758279299,

title = "First observation of the decays Bˉ0→D+K−π+π− and B−→D0K−π+π−.",

abstract = "First observations of the Cabibbo suppressed decays B0bar -> D+ K- pi+ pi- and B- -> D0 K- pi+ pi- are reported using 35 pb^{-1} of data collected with the LHCb detector. Their branching fractions are measured with respect to the corresponding Cabibbo favored decays, from which we obtain B(B0bar -> D+ K- pi+ pi-)/B(B0bar -> D+ pi- pi+ pi-)=(5.9\pm1.1\pm0.5) x 10^{-2} and B(B- -> D0 K- pi+ pi-)/B(B- -> D0 pi- pi+ pi-)=(9.4\pm1.3\pm0.9) x 10^{-2}, where the uncertainties are statistical and systematic, respectively. The B- -> D0 K- pi+ pi- decay is particularly interesting, as it can be used in a similar way to B- -> D0 K- to measure the CKM phase gamma.",

author = "Stephen Playfer and {The LHCb Collaboration} and Matthew Needham and Franz Muheim and Peter Clarke and Yuehong Xie and Stephan Eisenhardt",

year = "2012",

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doi = "10.1103/PhysRevLett.108.161801",

language = "English",

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journal = "Physical Review Letters",

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TY - JOUR

T1 - First observation of the decays Bˉ0→D+K−π+π− and B−→D0K−π+π−.

AU - Playfer, Stephen

AU - The LHCb Collaboration

AU - Needham, Matthew

AU - Muheim, Franz

AU - Clarke, Peter

AU - Xie, Yuehong

AU - Eisenhardt, Stephan

PY - 2012/4/18

Y1 - 2012/4/18

N2 - First observations of the Cabibbo suppressed decays B0bar -> D+ K- pi+ pi- and B- -> D0 K- pi+ pi- are reported using 35 pb^{-1} of data collected with the LHCb detector. Their branching fractions are measured with respect to the corresponding Cabibbo favored decays, from which we obtain B(B0bar -> D+ K- pi+ pi-)/B(B0bar -> D+ pi- pi+ pi-)=(5.9\pm1.1\pm0.5) x 10^{-2} and B(B- -> D0 K- pi+ pi-)/B(B- -> D0 pi- pi+ pi-)=(9.4\pm1.3\pm0.9) x 10^{-2}, where the uncertainties are statistical and systematic, respectively. The B- -> D0 K- pi+ pi- decay is particularly interesting, as it can be used in a similar way to B- -> D0 K- to measure the CKM phase gamma.

AB - First observations of the Cabibbo suppressed decays B0bar -> D+ K- pi+ pi- and B- -> D0 K- pi+ pi- are reported using 35 pb^{-1} of data collected with the LHCb detector. Their branching fractions are measured with respect to the corresponding Cabibbo favored decays, from which we obtain B(B0bar -> D+ K- pi+ pi-)/B(B0bar -> D+ pi- pi+ pi-)=(5.9\pm1.1\pm0.5) x 10^{-2} and B(B- -> D0 K- pi+ pi-)/B(B- -> D0 pi- pi+ pi-)=(9.4\pm1.3\pm0.9) x 10^{-2}, where the uncertainties are statistical and systematic, respectively. The B- -> D0 K- pi+ pi- decay is particularly interesting, as it can be used in a similar way to B- -> D0 K- to measure the CKM phase gamma.

U2 - 10.1103/PhysRevLett.108.161801

DO - 10.1103/PhysRevLett.108.161801

M3 - Article

VL - 108

SP - 161801

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

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