Published November 1, 2011 | Version v1
Report Metadata-only

Semileptonic Form Factor ratio Bs → Ds/B → D and Its Application to BR(Bs0 → μ+μ-)

Creators

  • 1. Univ. of Illinois, Urbana, IL (United States)
  • 2. Fermi National Accelerator Lab., Batavia, IL (United States)
  • 3. Univ. of Iowa, Iowa City, IA (United States)
  • 4. Univ. of Utah, Salt Lake City, UT (United States)
  • 5. University of Glasgow (United Kingdom)
  • 6. University of Strathclyde, Glasgow (United Kingdom)

Description

We present a (2+1)-flavor lattice QCD calculation of the form factor ratio between the semileptonic decays (bar B)s0 → Ds+l-(bar ν) and (bar B)0 → D+l-(bar ν). This ratio is an important theoretical input to the hadronic determination of the B meson fragmentation fraction ratio fs/fd which enters in the measurement of BR(Bs0 → μ+μ-). Small lattice spacings and high statistics enable us to simulate the decays with a dynamic final D meson of small momentum and reliably extract the hadronic matrix elements at nonzero recoil. We report our preliminary result for the form factor ratio at the corresponding momentum transfer of the two decays f0(s) (Mπ2)/f0(d) (MK2).

Availability note (English)

Available from http://lss.fnal.gov/cgi-bin/find_paper.pl?conf-11-610.pdf; PURL: https://www.osti.gov/servlets/purl/1029658/

Additional details

Identifiers

URL
http://lss.fnal.gov/cgi-bin/find_paper.pl?conf-11-610.pdf; https://www.osti.gov/servlets/purl/1029658/;

Publishing Information

Imprint Pagination
7 p.
Report number
FERMILAB-CONF--11-610-T

Conference

Title
29. international symposium on lattice field theory
Acronym
Lattice 2011
Dates
10-16 Jul 2011
Place
Lake Tahoe, CA (United States)

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
43002264
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Conference, Non-conventional Literature
Descriptors DEI
B MESONS; D MESONS; FORM FACTORS; FRAGMENTATION; LATTICE FIELD THEORY; MATRIX ELEMENTS; MOMENTUM TRANSFER; QUANTUM CHROMODYNAMICS; SEMILEPTONIC DECAY; STATISTICS
Descriptors DEC
BEAUTY MESONS; BEAUTY PARTICLES; BOSONS; CHARM PARTICLES; CHARMED MESONS; CONSTRUCTIVE FIELD THEORY; DECAY; DIMENSIONLESS NUMBERS; ELEMENTARY PARTICLES; FIELD THEORIES; HADRONS; MATHEMATICS; MESONS; PARTICLE DECAY; PARTICLE PROPERTIES; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; WEAK PARTICLE DECAY

Optional Information

Contract/Grant/Project number
AC02-07CH11359
Funding organization
DOE Office of Science (United States)