Measurement of CP Violation in B^{0} to ΦK^{0}, and of Branching Fraction and CP Violation in B^{0} → F_{0}(980) K$$0\atop{S}$$
Abstract
The authors measure the timedependent CP asymmetry parameters in B^{0} → K^{+}K^{}K^{0} based on a data sample of approximately 277 million Bmeson pairs recorded at the Y(4S) resonance with the BABAR detector at the PEPII Bmeson Factory at SLAC. They reconstruct twobody B^{0} decays to Φ(1020)K$$0\atop{S}$$ and Φ(1020)K$$0\atop{L}$$. Using a timedependent maximumlikelihood fit, they measure sin2β_{eff}(ΦK^{0}) = 0.48 ± 0.28 ± 0.10, and C(ΦK^{0}) = 0.16 ± 0.25 ± 0.09, where the first error is statistical, and the second is systematic. They also present measurements of the CPviolating asymmetries in the decay B^{0} → f_{0}(→ {pi}^{+}π^{})K$$0\atop{S}$$. The results are obtained from a data sample of 209 x 10{sup 6} Y(4S) → B$$\bar{B}$$ decays, also collected with the BABAR detector at the PEPII asymmetricenergy B Factory at SLAC. From a timedependent maximumlikelihood fit they measure the mixinginduced CP violation parameter S(f_{0}(980)K$$0\atop{S}$$) =  sin 2β_{eff}f_{0}(980)K$$0\atop{S}$$ = 0.95$$+0.32\atop{0.23}$$ ± 0.10 and the direct CP violation parameter C(f_{0}(980)K$$0\atop{S}$$) =  0.24 ± 0.31 ± 0.15, where the first errors are statistical and the second systematic. Finally, they present a measurement of the branching fraction of the decay B^{0} → f_{0}(→ π^{+}π^{})K$$0\atop{S}$$. From a timedependent maximum likelihood fit to a data sample of 123more »
 Authors:

 Univ. of Wisconsin, Madison, WI (United States)
 Publication Date:
 Research Org.:
 SLAC National Accelerator Lab., Menlo Park, CA (United States)
 Sponsoring Org.:
 USDOE
 OSTI Identifier:
 925459
 Report Number(s):
 SLACR895
TRN: US0803017
 DOE Contract Number:
 AC0276SF00515
 Resource Type:
 Thesis/Dissertation
 Country of Publication:
 United States
 Language:
 English
 Subject:
 43 PARTICLE ACCELERATORS; ASYMMETRY; DECAY; MAXIMUMLIKELIHOOD FIT; RESONANCE; STANFORD LINEAR ACCELERATOR CENTER; ExperimentHEP; HEPEX
Citation Formats
Kutter, Paul E. Measurement of CP Violation in B0 to ΦK0, and of Branching Fraction and CP Violation in B0 → F0(980) K$0\atop{S}$. United States: N. p., 2006.
Web. doi:10.2172/925459.
Kutter, Paul E. Measurement of CP Violation in B0 to ΦK0, and of Branching Fraction and CP Violation in B0 → F0(980) K$0\atop{S}$. United States. https://doi.org/10.2172/925459
Kutter, Paul E. 2006.
"Measurement of CP Violation in B0 to ΦK0, and of Branching Fraction and CP Violation in B0 → F0(980) K$0\atop{S}$". United States. https://doi.org/10.2172/925459. https://www.osti.gov/servlets/purl/925459.
@article{osti_925459,
title = {Measurement of CP Violation in B0 to ΦK0, and of Branching Fraction and CP Violation in B0 → F0(980) K$0\atop{S}$},
author = {Kutter, Paul E.},
abstractNote = {The authors measure the timedependent CP asymmetry parameters in B0 → K+KK0 based on a data sample of approximately 277 million Bmeson pairs recorded at the Y(4S) resonance with the BABAR detector at the PEPII Bmeson Factory at SLAC. They reconstruct twobody B0 decays to Φ(1020)K$0\atop{S}$ and Φ(1020)K$0\atop{L}$. Using a timedependent maximumlikelihood fit, they measure sin2βeff(ΦK0) = 0.48 ± 0.28 ± 0.10, and C(ΦK0) = 0.16 ± 0.25 ± 0.09, where the first error is statistical, and the second is systematic. They also present measurements of the CPviolating asymmetries in the decay B0 → f0(→ {pi}+π)K$0\atop{S}$. The results are obtained from a data sample of 209 x 10{sup 6} Y(4S) → B$\bar{B}$ decays, also collected with the BABAR detector at the PEPII asymmetricenergy B Factory at SLAC. From a timedependent maximumlikelihood fit they measure the mixinginduced CP violation parameter S(f0(980)K$0\atop{S}$) =  sin 2βefff0(980)K$0\atop{S}$ = 0.95$+0.32\atop{0.23}$ ± 0.10 and the direct CP violation parameter C(f0(980)K$0\atop{S}$) =  0.24 ± 0.31 ± 0.15, where the first errors are statistical and the second systematic. Finally, they present a measurement of the branching fraction of the decay B0 → f0(→ π+π)K$0\atop{S}$. From a timedependent maximum likelihood fit to a data sample of 123 x 106 Y(4S) → B$\bar{B}$ decays they find 93.6 ± 13.6 ± 6.4 signal events corresponding to a branching fraction of β(B0 → f0(980)(→ π+π)K0) = (6.0 ± 0.9 ± 0.6 ± 1.2) x 106, where the first error is statistical, the second systematic, and the third due to model uncertainties.},
doi = {10.2172/925459},
url = {https://www.osti.gov/biblio/925459},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2006},
month = {1}
}