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Title: Study of Rare Radiative B Decay to K*(1430) Meson Using the BABAR Detector

Abstract

Radiative B Meson decay through the b {yields} s{gamma} process has been one of the most sensitive probe of new physics beyond the Standard Model, because of its importance in understanding the phenomenon of CP violation, which is believed to be necessary to explain the excess of matter over anti-matter in our universe. The inclusive picture of the b {yields} s{gamma} process is well established; however, our knowledge of the exclusive final states in radiative B meson decays is rather limited. We have investigated one of them, the exclusive, radiative B decay to the charmless K*{sub 2}(1430) meson, in a sample of 88.5 x 10{sup 6} B{bar B} events with the BABAR detector at the PEP-II storage ring. We present a measurement of the branching fractions {Beta}(B{sup 0} {yields} K*{sub 2}(1430){sup 0}{gamma}) = (1.22 {+-} 0.25 {+-} 0.10) x 10{sup -5} and {Beta}(B{sup +} {yields} K*{sub 2}(1430){sup +}){gamma} = (1.45 {+-} 0.40 {+-} 0.15) x 10{sup -5}, where the first error is statistical and the second systematic. In addition, we have performed the first search for direct CP violation in this decay with the measured asymmetry in B{sup 0} {yields} K*{sub 2}(1430){sup 0}{gamma} of {Alpha}{sub CP} = -0.08 {+-} 0.15more » {+-} 0.01.« less

Authors:
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
878442
Report Number(s):
SLAC-R-778
TRN: US0602384
DOE Contract Number:  
AC02-76SF00515
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ASYMMETRY; B MESONS; DECAY; MESONS; PHYSICS; PROBES; STANDARD MODEL; STORAGE RINGS; UNIVERSE; Experiment-HEP,ACCPHY

Citation Formats

Guo, Qinghua, and /Pennsylvania U. Study of Rare Radiative B Decay to K*(1430) Meson Using the BABAR Detector. United States: N. p., 2005. Web. doi:10.2172/878442.
Guo, Qinghua, & /Pennsylvania U. Study of Rare Radiative B Decay to K*(1430) Meson Using the BABAR Detector. United States. https://doi.org/10.2172/878442
Guo, Qinghua, and /Pennsylvania U. 2005. "Study of Rare Radiative B Decay to K*(1430) Meson Using the BABAR Detector". United States. https://doi.org/10.2172/878442. https://www.osti.gov/servlets/purl/878442.
@article{osti_878442,
title = {Study of Rare Radiative B Decay to K*(1430) Meson Using the BABAR Detector},
author = {Guo, Qinghua and /Pennsylvania U.},
abstractNote = {Radiative B Meson decay through the b {yields} s{gamma} process has been one of the most sensitive probe of new physics beyond the Standard Model, because of its importance in understanding the phenomenon of CP violation, which is believed to be necessary to explain the excess of matter over anti-matter in our universe. The inclusive picture of the b {yields} s{gamma} process is well established; however, our knowledge of the exclusive final states in radiative B meson decays is rather limited. We have investigated one of them, the exclusive, radiative B decay to the charmless K*{sub 2}(1430) meson, in a sample of 88.5 x 10{sup 6} B{bar B} events with the BABAR detector at the PEP-II storage ring. We present a measurement of the branching fractions {Beta}(B{sup 0} {yields} K*{sub 2}(1430){sup 0}{gamma}) = (1.22 {+-} 0.25 {+-} 0.10) x 10{sup -5} and {Beta}(B{sup +} {yields} K*{sub 2}(1430){sup +}){gamma} = (1.45 {+-} 0.40 {+-} 0.15) x 10{sup -5}, where the first error is statistical and the second systematic. In addition, we have performed the first search for direct CP violation in this decay with the measured asymmetry in B{sup 0} {yields} K*{sub 2}(1430){sup 0}{gamma} of {Alpha}{sub CP} = -0.08 {+-} 0.15 {+-} 0.01.},
doi = {10.2172/878442},
url = {https://www.osti.gov/biblio/878442}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Sep 14 00:00:00 EDT 2005},
month = {Wed Sep 14 00:00:00 EDT 2005}
}