Header

UZH-Logo

Maintenance Infos

Observation of the $B^+ \to D^{*-} K^+\pi^+$ decay


LHCb Collaboration; Bernet, R; Müller, K; Serra, N; Steinkamp, O; Straumann, U; Vollhardt, A; et al (2017). Observation of the $B^+ \to D^{*-} K^+\pi^+$ decay. Physical Review. D, Particles, fields, gravitation and cosmology, D96(1):011101.

Abstract

The $B^+ \to D^{*-} K^+\pi^+$ 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$B^+ \to D^{*-} K^+\pi^+$ normalization channel is measured to be $\mathscr{B}(B^+ \to D^{*−} K^+\pi^+) / \mathscr{B}(B^+ \to D^{*−}\pi^+\pi^+) = (6.39 \pm 0.27 \pm 0.48) \times 10^{−2}$, where the first uncertainty is statistical and the second is systematic. This is the first observation of the $B^+ \to D^{∗−}K^+\pi^+$ decay.

Abstract

The $B^+ \to D^{*-} K^+\pi^+$ 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$B^+ \to D^{*-} K^+\pi^+$ normalization channel is measured to be $\mathscr{B}(B^+ \to D^{*−} K^+\pi^+) / \mathscr{B}(B^+ \to D^{*−}\pi^+\pi^+) = (6.39 \pm 0.27 \pm 0.48) \times 10^{−2}$, where the first uncertainty is statistical and the second is systematic. This is the first observation of the $B^+ \to D^{∗−}K^+\pi^+$ decay.

Statistics

Citations

Altmetrics

Downloads

7 downloads since deposited on 06 Feb 2018
7 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2017
Deposited On:06 Feb 2018 16:50
Last Modified:19 Feb 2018 10:46
Publisher:American Physical Society
ISSN:1550-7998
OA Status:Hybrid
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1103/PhysRevD.96.011101

Download

Download PDF  'Observation of the $B^+ \to D^{*-} K^+\pi^+$ decay'.
Preview
Content: Published Version
Filetype: PDF
Size: 350kB
View at publisher
Licence: Creative Commons: Attribution 4.0 International (CC BY 4.0)