Anti-charmed pentaquark from B decays

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dc.creatorLee, Su Houng
dc.creatorKwon, Youngshin
dc.creatorKwon, Youngjoon
dc.date2005-12-06
dc.date2006-02-14
dc.date.accessioned2026-07-07T10:44:27Z
dc.date.available2026-07-07T10:44:27Z
dc.descriptionWe explore the possibility of observing the anti-charmed pentaquark state from the $Θ_c \bar{n} π^+$ decay of $B$ meson produced at $B$-factory experiments. We first show that the observed branching ratio of the $B^+$ to $ Λ^-_c p π^+$, as well as its open histograms, can be remarkably well explained by assuming that the decay proceeds first through the $π^+ \bar{D}^0$ (or $\bar{D}^{*0}$) decay, whose branching ratios are known, and then through the subsequent decay of the virtual $\bar{D}^0$ or $\bar{D}^{*0}$ mesons to $Λ_c^- p$, whose strength are calculated using previously fit hadronic parameters. We then note that the $Θ_c$ can be similarly produced when the virtual $\bar{D}^0$ or $\bar{D}^{*0}$ decay into an anti-nucleon and a $Θ_c$. Combining the present theoretical estimates for the ratio $g_{D N Λ_c} / g_{D N Θ_c} \sim 13 $ and $g_{D^* N Θ_c} \sim {1/3} g_{D N Θ_c}$, we find that the anti-charmed pentaquark $Θ_c$, which was predicted to be bound by several model calculations, can be produced via $B^+ \to Θ_c \bar{n} π^+$, and be observed from the $B$-factory experiments through the weak decay of $Θ_c \to p K^+ π^- π^- $.
dc.description4 pages, 4 figures, Revised version to be published in Physical Review Letters
dc.identifierhttps://arxiv.org/abs/hep-ph/0512074
dc.identifierhttp://arxiv.org/abs/hep-ph/0512074
dc.identifierPhys.Rev.Lett.96:102001,2006
dc.identifierdoi:10.1103/PhysRevLett.96.102001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/182597
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.titleAnti-charmed pentaquark from B decays
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