Published November 5, 2010 | Version v1
Journal article Metadata-only

First Measurement of Inclusive B→Xsη Decays

Creators

  • 1. University of Hawaii, Honolulu, Hawaii 96822 (United States)
  • 2. High Energy Accelerator Research Organization (KEK), Tsukuba (Japan)

Description

We report a first measurement of inclusive B→Xsη decays, where Xs is a charmless state with unit strangeness. The measurement is based on a pseudoinclusive reconstruction technique and uses a sample of 657x106BB pairs accumulated with the Belle detector at the KEKB e+e- collider. For MXs<2.6 GeV/c2, we measure a branching fraction of [26.1±3.0(stat)-2.1+1.9(syst)-7.1+4.0(model)]x10-5 and a direct CP asymmetry of ACP=-0.13±0.04-0.03+0.02. Over half of the signal occurs in the range MXs>1.8 GeV/c2.

Additional details

Identifiers

DOI
10.1103/PhysRevLett.105.191803;
arXiv
arXiv:0910.4751v2;

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
105
Journal Issue
19
Journal Page Range
p. 191803-191803.6
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
43020881
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
ACCELERATORS; BRANCHING RATIO; CP INVARIANCE; ELECTRON-POSITRON COLLISIONS; GEV RANGE; PARTICLE DECAY; STRANGENESS
Descriptors DEC
COLLISIONS; DECAY; DIMENSIONLESS NUMBERS; ELECTRON COLLISIONS; ENERGY RANGE; INVARIANCE PRINCIPLES; PARTICLE PROPERTIES; POSITRON COLLISIONS

Optional Information

Notes
(c) 2010 American Institute of Physics
Collaborations
Belle Collaboration