Measurement of B --> K*gamma Branching Fractions and Charge Asymmetries

Technical Report · Fri Oct 26 00:00:00 EDT 2001

DOI:https://doi.org/10.2172/798904· OSTI ID:798904

Jessop, Colin P ^[1]

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1. SLAC

The branching fractions of the exclusive decays B{sup 0} {yields} K*{sup 0}{gamma} and B{sup +} {yields} K*{sup +}{gamma} are measured. from a sample of (22.74 {+-} 0.36) x 10{sup 6} B{bar B} decays collected with the BABAR detector at the PEP II asymmetric e{sup +}e{sup -} collider. We find {Beta}(B{sup 0} {yields} K*{sup 0}{gamma}) = (4.23 {+-} 0.40(stat.) {+-} 0.22(sys.)) x 10{sup -5}, {Beta}(B{sup +} {yields} K*{sup +}{gamma}) = (3.83 {+-} 0.62(stat.) {+-} 0.22(sys.)) x 10{sup -5} and constrain the CP-violating charge asymmetry to be -0.170 < A{sub CP} (B {yields} K*{gamma}) < 0.082 at 90% C.L.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (US)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 798904
• Report Number(s): SLAC-PUB-8952
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ASYMMETRY
DECAY
STANFORD LINEAR ACCELERATOR CENTER