Observation of the decay B̅ 0→Λc+p̅ π0
Name
Aubert-2010-Observation of the d.pdf
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Author(s)
Cowan, Ray Franklin
Dujmic, Denis
Fisher, Peter H.
Henderson, Shawn Wesley
Sciolla, Gabriella
Spitznagel, Michael
Yamamoto, Richard K.
Zhao, Min Liang
Alternative Title
Observation of the decay B [beta superscript -0]→Λ [delta subscript c superscript +]p[superscript - pi 0]
Date Issued
August 2010
Journal
Physical review D
Publisher
American Physical Society
Citation
Aubert, B. et al. “Observation of the decay B[over ¯]^{0}→Λ_{c}^{+}p[over ¯]π^{0}.” Physical Review D 82.3 (2010): n. pag. © 2010 The American Physical Society
Version
Final published version
Abstract
In a sample of 467×106 BB̅ pairs collected with the BABAR detector at the PEP-II collider at SLAC we have observed the decay B̅ 0[beta superscript -0]→Λc+p̅ π0 [delta subscript c superscript +]p[superscript - pi 0] and measured the branching fraction to be (1.94±0.17±0.14±0.50)×10[superscript -4], where the uncertainties are statistical, systematic, and the uncertainty on the Λc+ [delta subscript c superscript +]→pK-π+ [p kappa superscript - pi +-π+ branching fraction, respectively. We determine an upper limit of 1.5×10[superscript -6] at 90% C.L. for the product branching fraction B(B̅ [superscript 0]→Σ [sigma subscript c superscript +](2455)p̅)×B(Λ [delta subscript c superscript +]→pK-π+ [p kappa superscript- pi +]). Furthermore, we observe an enhancement at the threshold of the invariant mass of the baryon-antibaryon pair.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.82.031102
