Published July 17, 2009 | Version v1
Journal article Metadata-only

Observation of New Charmless Decays of Bottom Hadrons

Creators

  • 1. Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki (Finland)
  • 2. Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 (United States)

Description

We search for new charmless decays of neutral b hadrons to pairs of charged hadrons, using 1 fb-1 of data collected by the CDF II detector at the Fermilab Tevatron. We report the first observation of the Bs0→K-π+ decay and measure B(Bs0→K-π+)=(5.0±0.7(stat)±0.8(syst))x10-6. We also report the first observation of charmless b-baryon decays, and measure B(Λb0→pπ-)=(3.5±0.6(stat)±0.9(syst))x10-6 and B(Λb0→pK-)=(5.6±0.8(stat)±1.5(syst))x10-6. No evidence is found for other modes, and we set the limit B(Bs0→π+π-)<1.2x10-6 at 90% C.L.

Additional details

Identifiers

DOI
10.1103/PhysRevLett.103.031801;
arXiv
arXiv:0812.4271v1;

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
103
Journal Issue
3
Journal Page Range
p. 031801-031801.8
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
41078250
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
B MESONS; FERMILAB COLLIDER DETECTOR; FERMILAB TEVATRON; KAONS MINUS; PARTICLE DECAY; PIONS MINUS; PIONS PLUS
Descriptors DEC
ACCELERATORS; BEAUTY MESONS; BEAUTY PARTICLES; BOSONS; CYCLIC ACCELERATORS; DECAY; ELEMENTARY PARTICLES; HADRONS; KAONS; MEASURING INSTRUMENTS; MESONS; PIONS; PSEUDOSCALAR MESONS; RADIATION DETECTORS; STRANGE MESONS; STRANGE PARTICLES; SYNCHROTRONS

Optional Information

Notes
(c) 2009 The American Physical Society
Collaborations
CDF Collaboration