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Title: SPECTROSCOPY OF HEAVY QUARKS AT BABAR

Abstract

No abstract prepared.

Authors:
Publication Date:
Research Org.:
Stanford Linear Accelerator Center, Menlo Park, CA (US)
Sponsoring Org.:
USDOE Office of Science (US)
OSTI Identifier:
815302
Report Number(s):
SLAC-WP-038
TRN: US0304587
DOE Contract Number:
AC03-76SF00515
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 22 Aug 2003
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; QUARKS; SPECTROSCOPY; STANFORD LINEAR ACCELERATOR CENTER

Citation Formats

Lewandowski, Bernd. SPECTROSCOPY OF HEAVY QUARKS AT BABAR. United States: N. p., 2003. Web. doi:10.2172/815302.
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Lewandowski, Bernd. SPECTROSCOPY OF HEAVY QUARKS AT BABAR. United States. doi:10.2172/815302.
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Lewandowski, Bernd. Fri . "SPECTROSCOPY OF HEAVY QUARKS AT BABAR". United States. doi:10.2172/815302. https://www.osti.gov/servlets/purl/815302.
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@article{osti_815302,
title = {SPECTROSCOPY OF HEAVY QUARKS AT BABAR},
author = {Lewandowski, Bernd},
abstractNote = {No abstract prepared.},
doi = {10.2172/815302},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Aug 22 00:00:00 EDT 2003},
month = {Fri Aug 22 00:00:00 EDT 2003}
}
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Technical Report:
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DOI:  10.2172/815302
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  • The BABAR experiment at SLAC provides an opportunity for measurement of CP violation in B decays. A measurement of time-dependent CP violating asymmetries using exclusive B meson decays where the b quark decays to c{bar c}d (including B{sup 0} {yields} D*{sup +}D*{sup -} and B{sup 0} {yields} D*{sup {+-}}D{sup {-+}} decays) is presented here. This is the first measurement of CP violation in a mode sensitive to the Unitarity Triangle parameter sin2{beta} outside of decays containing charmonium. It provides a comparison to measurements of sin2{beta} using b {yields} c{bar c}s, and permits an observation into potential new physics sources ofmore » CP violation, such as supersymmetry, via differences between these measurements and those of B{sup 0} {yields} J/{psi} K{sub S}{sup 0} as statistics of reconstructed neutral B decays to D{sup (*)+} D{sup (*)-} increase. The measured value of the time-dependent CP violating asymmetries are: S = 0.38 {+-} 0.88(stat) {+-} 0.12(syst) and C = -0.30 {+-} 0.50(stat) {+-} 0.13(syst) for B{sup 0} {yields} D*{sup -} D{sup +}; S = -0.43 {+-} 1.41(stat) {+-} 0.23(syst) and C = 0.53 {+-} 0.74(stat) {+-} 0.15(syst) for B{sup 0} {yields} D*{sup +} D{sup -}; and S = -0.05 {+-} 0.45(stat) {+-} 0.05(syst) and C = 0.12 {+-} 0.30(stat) {+-} 0.05(syst) for B{sup 0} {yields} D*{sup -} D{sup +}; where S corresponds to CP violation in the interference of mixing and decay and C corresponds to CP violation in decay.« less

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  • The SLD detector collected a sample of 550K hadronic events at the Z{sup 0} peak from e{sup +}e{sup -} collisions at the SLC during the 1993 to 1998 period. Polarized electron beams, a small and stable interaction point and the excellent performance of the 3-D CCD vertex detector provide a unique environment for precision electroweak tests of the Standard Model. Improved measurements of heavy quark electroweak parameters are presented here.