Observation of the B+ →d∗-K+π+ decay

(LHCb Collaboration)

Research output: Contribution to journalArticle

Abstract

The B+→D∗-K+π+ decay potentially provides an excellent way to investigate charm meson spectroscopy. The decay is searched for in a sample of proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb-1. A clear signal is observed, and the ratio of its branching fraction to that of the B+→D∗-π+π+ normalization channel is measured to be B(B+→D∗-K+π+)/B(B+→D∗-π+π+)=(6.39±0.27±0.48)×10-2, where the first uncertainty is statistical and the second is systematic. This is the first observation of the B+→D∗-K+π+ decay.

Original languageEnglish (US)
Article number011101
JournalPhysical Review D
Volume96
Issue number1
DOIs
StatePublished - Jul 1 2017

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decay
protons
center of mass
mesons
luminosity
collisions
detectors
spectroscopy
energy

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Observation of the B+ →d∗-K+π+ decay. / (LHCb Collaboration).

In: Physical Review D, Vol. 96, No. 1, 011101, 01.07.2017.

Research output: Contribution to journalArticle

(LHCb Collaboration). / Observation of the B+ →d∗-K+π+ decay. In: Physical Review D. 2017 ; Vol. 96, No. 1.
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abstract = "The B+→D∗-K+π+ decay potentially provides an excellent way to investigate charm meson spectroscopy. The decay is searched for in a sample of proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb-1. A clear signal is observed, and the ratio of its branching fraction to that of the B+→D∗-π+π+ normalization channel is measured to be B(B+→D∗-K+π+)/B(B+→D∗-π+π+)=(6.39±0.27±0.48)×10-2, where the first uncertainty is statistical and the second is systematic. This is the first observation of the B+→D∗-K+π+ decay.",
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