Published April 1, 2005 | Version v1
Journal article Metadata-only

Study of the B-→J/ψK-π+π- decay and measurement of the B-→X(3872)K- branching fraction

Creators

  • 1. Laboratoire de Physique des Particules, F-74941 Annecy-le-Vieux (France)
  • 2. Universita di Bari, Dipartimento di Fisica and INFN, I-70126 Bari (Italy)
  • 3. Institute of High Energy Physics, Beijing 100039 (China)
  • 4. University of Bergen, Inst. of Physics, N-5007 Bergen (Norway)

Description

We study the decay B-→J/ψK-π+π- using 117x106 BB events collected at the Y(4S) resonance with the BABAR detector at the PEP-II e+e- asymmetric-energy storage ring. We measure the branching fractions B (B-→J/ψK-π+π-)=(116±7(stat.)±9(syst.))x10-5 and B (B-→X(3872)K-)x B (X(3872)→J/ψπ+π-)=(1.28±0.41)x10-5 and find the mass of the X(3872) to be 3873.4±1.4 MeV/c2. We search for the hc narrow state in the decay B-→hcK-, hc→J/ψπ+π- and for the decay B-→J/ψD0π-, with D0→K-π+. We set the 90% C.L. limits B(B-→hcK-)xB(hc→J/ψπ+π-)<3.4x10-6 and B(B-→J/ψD0π-)<5.2x10-5

Additional details

Identifiers

DOI
10.1103/PhysRevD.71.071103;
arXiv
arXiv:hep-ex/0406022v1;

Publishing Information

Journal Title
Physical Review. D, Particles Fields
Journal Volume
71
Journal Issue
7
Journal Page Range
p. 071103-071103.7
ISSN
0556-2821
CODEN
PRVDAQ

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
37023287
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
ASYMMETRY; B MINUS MESONS; BRANCHING RATIO; D MESONS; ELECTRON-POSITRON INTERACTIONS; J PSI-3097 MESONS; MEV RANGE; MULTIPARTICLE SPECTROMETERS; PARTICLE DECAY; PARTICLE IDENTIFICATION; PEP STORAGE RINGS; PIONS MINUS; PIONS PLUS; REST MASS; UPSILON-10580 MESONS
Descriptors DEC
B MESONS; BEAUTY MESONS; BEAUTY PARTICLES; BOSONS; BOTTOMONIUM; CHARM PARTICLES; CHARMED MESONS; CHARMONIUM; DECAY; DIMENSIONLESS NUMBERS; ELEMENTARY PARTICLES; ENERGY RANGE; HADRONS; INTERACTIONS; LEPTON-LEPTON INTERACTIONS; MASS; MEASURING INSTRUMENTS; MESONS; PARTICLE INTERACTIONS; PIONS; PSEUDOSCALAR MESONS; QUARKONIUM; SPECTROMETERS; STORAGE RINGS; VECTOR MESONS

Optional Information

Notes
(c) 2005 The American Physical Society
Collaborations
BABAR Collaboration