Observation of B^{\pm} \to χ_{c1} π^{\pm} and Search for Direct CP Violation

Simple item page
dc.creatorThe Belle Collaboration
dc.creatorKumar, R.
dc.creatorSingh, J. B.
dc.creatorAbe, K.
dc.date2006-07-07
dc.date2006-08-22
dc.date.accessioned2026-07-07T10:24:40Z
dc.date.available2026-07-07T10:24:40Z
dc.descriptionWe report the first observation of $B^{\pm} \to χ_{c1} π^{\pm}$, the Cabibbo- and color-suppressed decay in a data sample of $386\times 10^6$~$B\bar B$ events collected at the $Υ(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. We observe $55\pm10$ signal events with a statistical significance of $6.3σ$ including systematic uncertainties. The measured branching fraction and charge-asymmetry is $\mathcal {B}(B^{\pm} \to χ_{c1} π^{\pm}) = (2.2\pm 0.4\pm 0.3)\times 10^{-5}$ and $\mathcal{A}_π = 0.07 \pm 0.18\pm 0.02$, respectively. We also determine the ratio $\mathcal {B}(B^{\pm} \to χ_{c1} π^{\pm})/\mathcal {B}(B^{\pm} \to χ_{c1} K^{\pm}) = (4.3\pm 0.8\pm 0.3) %$.
dc.description5 Pages, 4 figures, BELLE-CONF-0644 (ICHEP06), Submitted to PRD(RC)
dc.identifierhttps://arxiv.org/abs/hep-ex/0607008
dc.identifierhttp://arxiv.org/abs/hep-ex/0607008
dc.identifierPhys.Rev.D74:051103,2006
dc.identifierdoi:10.1103/PhysRevD.74.051103
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/176269
dc.subjectHigh Energy Physics - Experiment
dc.titleObservation of B^{\pm} \to χ_{c1} π^{\pm} and Search for Direct CP Violation
dc.typetext

Files

Collections

arXiv