Measurement of Branching Fractions in Radiative BDecays to eta K gamma and Search for B Decays to eta' K gamma
Abstract
The authors present measurements of the B {yields} {eta}K{gamma} branching fractions and upper limits for the B {yields} {eta}'K{gamma} branching fractions. For B{sup +} {yields} {eta}K{sup +}{gamma} they also measure the time-integrated charge asymmetry. The data sample, collected with the BABAR detector at the Stanford Linear Accelerator Center, represents 232 x 10{sup 6} produced B{bar B} pairs. The results for branching fractions and upper limits at 90% C.L. in units of 10{sup -6} are: {Beta}(B{sup 0} {yields} {eta}K{sup 0}{gamma}) = 11.3{sub -2.6}{sup +2.8} {+-} 0.6, {Beta}(B{sup +} {yields} {eta}K{sup +}{gamma}) = 10.0 {+-} 1.3 {+-} 0.5, {Beta}(B{sup 0} {yields} {eta}'K{sup 0}{gamma}) < 6.6, {Beta}(B{sup +} {yields} {eta}'K{sup +}{gamma}) < 4.2. The charge asymmetry in the decay B{sup +} {yields} {eta}K{sup +}{gamma} is {Alpha}{sub ch} = -0.09 {+-} 0.12 {+-} 0.01. The first errors are statistical and the second systematic.
- Authors:
- Publication Date:
- Research Org.:
- Stanford Linear Accelerator Center (SLAC)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 878347
- Report Number(s):
- SLAC-PUB-11780
hep-ex/0603054; TRN: US0602451
- DOE Contract Number:
- AC02-76SF00515
- Resource Type:
- Technical Report
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 43 PARTICLE ACCELERATORS; ASYMMETRY; DECAY; STANFORD LINEAR ACCELERATOR CENTER; Experiment-HEP,HEPEX
Citation Formats
Aubert, B. Measurement of Branching Fractions in Radiative BDecays to eta K gamma and Search for B Decays to eta' K gamma. United States: N. p., 2006.
Web. doi:10.2172/878347.
Aubert, B. Measurement of Branching Fractions in Radiative BDecays to eta K gamma and Search for B Decays to eta' K gamma. United States. doi:10.2172/878347.
Aubert, B. Fri .
"Measurement of Branching Fractions in Radiative BDecays to eta K gamma and Search for B Decays to eta' K gamma". United States.
doi:10.2172/878347. https://www.osti.gov/servlets/purl/878347.
@article{osti_878347,
title = {Measurement of Branching Fractions in Radiative BDecays to eta K gamma and Search for B Decays to eta' K gamma},
author = {Aubert, B.},
abstractNote = {The authors present measurements of the B {yields} {eta}K{gamma} branching fractions and upper limits for the B {yields} {eta}'K{gamma} branching fractions. For B{sup +} {yields} {eta}K{sup +}{gamma} they also measure the time-integrated charge asymmetry. The data sample, collected with the BABAR detector at the Stanford Linear Accelerator Center, represents 232 x 10{sup 6} produced B{bar B} pairs. The results for branching fractions and upper limits at 90% C.L. in units of 10{sup -6} are: {Beta}(B{sup 0} {yields} {eta}K{sup 0}{gamma}) = 11.3{sub -2.6}{sup +2.8} {+-} 0.6, {Beta}(B{sup +} {yields} {eta}K{sup +}{gamma}) = 10.0 {+-} 1.3 {+-} 0.5, {Beta}(B{sup 0} {yields} {eta}'K{sup 0}{gamma}) < 6.6, {Beta}(B{sup +} {yields} {eta}'K{sup +}{gamma}) < 4.2. The charge asymmetry in the decay B{sup +} {yields} {eta}K{sup +}{gamma} is {Alpha}{sub ch} = -0.09 {+-} 0.12 {+-} 0.01. The first errors are statistical and the second systematic.},
doi = {10.2172/878347},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Mar 31 00:00:00 EST 2006},
month = {Fri Mar 31 00:00:00 EST 2006}
}
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We present measurements of branching fractions and charge asymmetries for six B-meson decay modes with an {eta} or {eta}{prime} meson in the final state. The data sample corresponds to 232 million B{bar B} pairs collected with the BABAR detector at the PEP-II asymmetric-energy e{sup +}e{sup -} B Factory at SLAC.
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Measurement of branching fractions in radiative B decays to {eta}K{gamma} and search for B decays to {eta}{sup '}K{gamma}
We present measurements of the B{yields}{eta}K{gamma} branching fractions and upper limits for the B{yields}{eta}{sup '}K{gamma} branching fractions. For B{sup +}{yields}{eta}K{sup +}{gamma} we also measure the time-integrated charge asymmetry. The data sample, collected with the BABAR detector at the Stanford Linear Accelerator Center, represents 232x10{sup 6} produced BB pairs. The results for branching fractions and upper limits at 90% confidence level in units of 10{sup -6} are: B(B{sup 0}{yields}{eta}K{sup 0}{gamma})=11.3{sub -2.6}{sup +2.8}{+-}0.6, B(B{sup +}{yields}{eta}K{sup +}{gamma})=10.0{+-}1.3{+-}0.5, B(B{sup 0}{yields}{eta}{sup '}K{sup 0}{gamma})<6.6, B(B{sup +}{yields}{eta}{sup '}K{sup +}{gamma})<4.2. The charge asymmetry in the decay B{sup +}{yields}{eta}K{sup +}{gamma} is A{sub ch}=-0.09{+-}0.12{+-}0.01. The first errors are statistical andmore » -
Measurement of Branching Fractions and Charge Asymmetries in B{sup +} Decays to {eta}{pi}{sup +}, {eta}K{sup +}, {eta}{rho}{sup +}, and {eta}{sup '}{pi}{sup +}, and Search for B{sup 0} Decays to {eta}K{sup 0} and {eta}{omega}
We present measurements of branching fractions and charge asymmetries for six B-meson decay modes with an {eta} or {eta}{sup '} meson in the final state. The data sample corresponds to 232x10{sup 6} BB pairs collected with the BABAR detector at the PEP-II asymmetric-energy e{sup +}e{sup -} B Factory at SLAC. We measure the branching fractions (in units of 10{sup -6}): B(B{sup +}{yields}{eta}{pi}{sup +})=5.1{+-}0.6{+-}0.3, B(B{sup +}{yields}{eta}K{sup +})=3.3{+-}0.6{+-}0.3, B(B{sup 0}{yields}{eta}K{sup 0})=1.5{+-}0.7{+-}0.1 (<2.5 at 90% C.L.), B(B{sup +}{yields}{eta}{rho}{sup +})=8.4{+-}1.9{+-}1.1, B(B{sup 0}{yields}{eta}{omega})=1.0{+-}0.5{+-}0.2 (<1.9 at 90% C.L.), and B(B{sup +}{yields}{eta}{sup '}{pi}{sup +})=4.0{+-}0.8{+-}0.4, where the first uncertainty is statistical and second systematic. For the charged modesmore » -
Measurement of Branching Fractions and Charge Asymmetries in B Meson Decays to {eta}{prime}K*, {eta}{prime}{rho}, and {eta}{pi}
The authors present preliminary measurements of branching fractions and charge asymmetries for the B meson decays B {yields} {eta}{prime} K*, B {yields} {eta}{prime}{rho}, and B{sup +} {yields} {eta}{prime}{pi}{sup +}. The data were recorded with the BABAR detector at PEP-II and correspond to 89 x 10{sup 6} B{bar B} pairs produced in e{sup +}e{sup -} annihilation through the {Upsilon}(4S) resonance. They find the branching fractions {Beta}(B{sup 0} {yields} {eta}K*{sup 0}) = (19.0{sub -2.1}{sup +2.2} {+-} 1.3) x 10{sup -6}, {Beta}(B{sup +} {yields} {eta}K*{sup +}) = (25.7{sub -3.6}{sup +3.8} {+-} 1.8) x 10{sup -6} with 90% confidence, and {Beta}(B{sup +} {yields} {eta}{prime}{pi}{supmore »