Observation of the decay B̅ 0→Λc+p̅ π0
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], w...
Main Authors: | , , , , , , , |
---|---|
Other Authors: | , , |
Format: | Article |
Language: | English |
Published: |
American Physical Society,
2011-02-03T20:43:20Z.
|
Subjects: | |
Online Access: | Get fulltext |
Summary: | 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. United States. Dept. of Energy. National Science Foundation (U.S.) Natural Sciences and Engineering Research Council of Canada Institut national de physique nucléaire et de physique des particules France. Commissariat à l'énergie atomique Deutsche Forschungsgemeinschaft (DFG) Germany. Federal Ministry of Education and Research (BMBF) Istituto nazionale di fisica nucleare Foundation for Fundamental Research on Matter (Netherlands) Research Council of Norway Ministry of Education and Science of the Russian Federation Spain. Ministerio de Ciencia e Innovación (MICINN) Science and Technology Facilities Council (Great Britain) Marie Curie International Fellowship Alfred P. Sloan Foundation United States-Israel Binational Science Foundation |
---|