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Title: Measurements of CP-Violating Asymmetries in B^0 toa_1^+(1260) \pi^- Decays

Abstract

The authors present measurements of CP-violating asymmetries in the decay B{sup 0} {yields} a{sub 1}{sup {+-}}(1260){pi}{sup {-+}} with a{sub 1}{sup {+-}}(1260) {yields} {pi}{sup {-+}}{pi}{sup {+-}}{pi}{sup {+-}}. The data sample corresponds to 384 x 10{sup 6} B{bar B} pairs collected with the BABAR detector at the PEP-II asymmetric B-factory at SLAC. They measure the CP-violating asymmetry {Alpha}{sub CP}{sup a{sub 1}{pi}} = -0.07 {+-} 0.07 {+-} 0.02, the mixing-induced CP violation parameter S{sub a{sub 1}{pi}} = 0.37 {+-} 0.21 {+-} 0.07, the direct Cp violation parameter C{sub a{sub 1}{pi}} = -0.10 {+-} 0.15 {+-} 0.09, and the parameters {Delta}C{sub a{sub 1}{pi}} = 0.26 {+-} 0.15 {+-} 0.07 and {Delta}S{sub a{sub 1}{pi}} = -0.14 {+-} 0.21 {+-} 0.06. From these measured quantities they determine the angle {alpha}{sub eff} = 78.6{sup o} {+-} 7.3{sup o}.

Authors:
Publication Date:
Research Org.:
Stanford Linear Accelerator Center (SLAC)
Sponsoring Org.:
USDOE
OSTI Identifier:
896928
Report Number(s):
SLAC-PUB-12257
hep-ex/0612050; TRN: US200705%%73
DOE Contract Number:  
AC02-76SF00515
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ASYMMETRY; DECAY; STANFORD LINEAR ACCELERATOR CENTER; Experiment-HEP,HEPEX

Citation Formats

Aubert, B. Measurements of CP-Violating Asymmetries in B^0 toa_1^+(1260) \pi^- Decays. United States: N. p., 2007. Web. doi:10.1103/PhysRevLett.98.181803.
Aubert, B. Measurements of CP-Violating Asymmetries in B^0 toa_1^+(1260) \pi^- Decays. United States. doi:10.1103/PhysRevLett.98.181803.
Aubert, B. Fri . "Measurements of CP-Violating Asymmetries in B^0 toa_1^+(1260) \pi^- Decays". United States. doi:10.1103/PhysRevLett.98.181803. https://www.osti.gov/servlets/purl/896928.
@article{osti_896928,
title = {Measurements of CP-Violating Asymmetries in B^0 toa_1^+(1260) \pi^- Decays},
author = {Aubert, B.},
abstractNote = {The authors present measurements of CP-violating asymmetries in the decay B{sup 0} {yields} a{sub 1}{sup {+-}}(1260){pi}{sup {-+}} with a{sub 1}{sup {+-}}(1260) {yields} {pi}{sup {-+}}{pi}{sup {+-}}{pi}{sup {+-}}. The data sample corresponds to 384 x 10{sup 6} B{bar B} pairs collected with the BABAR detector at the PEP-II asymmetric B-factory at SLAC. They measure the CP-violating asymmetry {Alpha}{sub CP}{sup a{sub 1}{pi}} = -0.07 {+-} 0.07 {+-} 0.02, the mixing-induced CP violation parameter S{sub a{sub 1}{pi}} = 0.37 {+-} 0.21 {+-} 0.07, the direct Cp violation parameter C{sub a{sub 1}{pi}} = -0.10 {+-} 0.15 {+-} 0.09, and the parameters {Delta}C{sub a{sub 1}{pi}} = 0.26 {+-} 0.15 {+-} 0.07 and {Delta}S{sub a{sub 1}{pi}} = -0.14 {+-} 0.21 {+-} 0.06. From these measured quantities they determine the angle {alpha}{sub eff} = 78.6{sup o} {+-} 7.3{sup o}.},
doi = {10.1103/PhysRevLett.98.181803},
journal = {Physical Review Letters},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 05 00:00:00 EST 2007},
month = {Fri Jan 05 00:00:00 EST 2007}
}