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Title: Anticharmed Pentaquark from B Decays

Abstract

We explore the possibility of observing the anticharmed pentaquark state from the {theta}{sub c}n{pi}{sup +} decay of B mesons produced in B-factory experiments. We first show that the observed branching ratio of the B{sup +} to {lambda}{sub c}{sup -}p{pi}{sup +}, as well as its open histograms, can be remarkably well explained by assuming that the decay proceeds first through the {pi}{sup +}D{sup 0} (or D*{sup 0}) decay, and then through the subsequent decay of the virtual D{sup 0} or D*{sup 0} mesons to {lambda}{sub c}{sup -}p. We then note that the {theta}{sub c} can be similarly produced when the virtual D{sup 0} or D*{sup 0} decay into an antinucleon and a {theta}{sub c}. Combining the present theoretical estimates for the ratio g{sub DN{lambda}{sub c}}/g{sub DN{theta}{sub c}}{approx}13 and g{sub D*N{theta}{sub c}}{approx}(1/3)g{sub DN{theta}{sub c}}, we find that the anticharmed pentaquark {theta}{sub c}, which was predicted to be bound by several model calculations, can be produced via B{sup +}{yields}{theta}{sub c}n{pi}{sup +}, and be observed from the B-factory experiments through the weak decay of {theta}{sub c}{yields}pK{sup +}{pi}{sup -}{pi}{sup -}.

Authors:
; ;  [1]
  1. Institute of Physics and Applied Physics, Yonsei University, Seoul 120-749 (Korea, Republic of)
Publication Date:
OSTI Identifier:
20778797
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 96; Journal Issue: 10; Other Information: DOI: 10.1103/PhysRevLett.96.102001; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; B PLUS MESONS; BRANCHING RATIO; D NEUTRAL MESONS; HADRONIC PARTICLE DECAY; HYPERONS; KAONS PLUS; LAMBDA C PLUS BARYONS; PAIR PRODUCTION; PIONS MINUS; PIONS PLUS

Citation Formats

Lee, Su Houng, Kwon, Youngshin, and Kwon, Youngjoon. Anticharmed Pentaquark from B Decays. United States: N. p., 2006. Web. doi:10.1103/PHYSREVLETT.96.1.
Lee, Su Houng, Kwon, Youngshin, & Kwon, Youngjoon. Anticharmed Pentaquark from B Decays. United States. doi:10.1103/PHYSREVLETT.96.1.
Lee, Su Houng, Kwon, Youngshin, and Kwon, Youngjoon. Fri . "Anticharmed Pentaquark from B Decays". United States. doi:10.1103/PHYSREVLETT.96.1.
@article{osti_20778797,
title = {Anticharmed Pentaquark from B Decays},
author = {Lee, Su Houng and Kwon, Youngshin and Kwon, Youngjoon},
abstractNote = {We explore the possibility of observing the anticharmed pentaquark state from the {theta}{sub c}n{pi}{sup +} decay of B mesons produced in B-factory experiments. We first show that the observed branching ratio of the B{sup +} to {lambda}{sub c}{sup -}p{pi}{sup +}, as well as its open histograms, can be remarkably well explained by assuming that the decay proceeds first through the {pi}{sup +}D{sup 0} (or D*{sup 0}) decay, and then through the subsequent decay of the virtual D{sup 0} or D*{sup 0} mesons to {lambda}{sub c}{sup -}p. We then note that the {theta}{sub c} can be similarly produced when the virtual D{sup 0} or D*{sup 0} decay into an antinucleon and a {theta}{sub c}. Combining the present theoretical estimates for the ratio g{sub DN{lambda}{sub c}}/g{sub DN{theta}{sub c}}{approx}13 and g{sub D*N{theta}{sub c}}{approx}(1/3)g{sub DN{theta}{sub c}}, we find that the anticharmed pentaquark {theta}{sub c}, which was predicted to be bound by several model calculations, can be produced via B{sup +}{yields}{theta}{sub c}n{pi}{sup +}, and be observed from the B-factory experiments through the weak decay of {theta}{sub c}{yields}pK{sup +}{pi}{sup -}{pi}{sup -}.},
doi = {10.1103/PHYSREVLETT.96.1},
journal = {Physical Review Letters},
number = 10,
volume = 96,
place = {United States},
year = {Fri Mar 17 00:00:00 EST 2006},
month = {Fri Mar 17 00:00:00 EST 2006}
}