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Measurements ofCP-Violating Asymmetries inB0→Ks0π0Decays
- Source :
- Physical Review Letters. 93
- Publication Year :
- 2004
- Publisher :
- American Physical Society (APS), 2004.
-
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}.
- Subjects :
- Physics
Particle physics
Unitarity
010308 nuclear & particles physics
media_common.quotation_subject
Electron–positron annihilation
General Physics and Astronomy
01 natural sciences
Asymmetry
B-factory
Nuclear physics
Particle decay
Crystallography
0103 physical sciences
CP violation
010306 general physics
media_common
Subjects
Details
- ISSN :
- 10797114 and 00319007
- Volume :
- 93
- Database :
- OpenAIRE
- Journal :
- Physical Review Letters
- Accession number :
- edsair.doi.dedup.....9f87db12f79a554c1fb208dfa57a36c0