Symmetry tests in polarized Z{sup 0} decays to b{bar b}g
- Aomori Univ. (Japan)
- Nagoya Univ. (Japan)
- Stanford Univ., CA (US). Stanford Linear Accelerator Center; and others
Angular asymmetries have been measured in polarized Z{sup 0} decays to b{bar b}g collected by the SLD experiment at the SLC. A high purity b{bar b}g event sample is selected utilizing lifetime information given by the SLD CCD pixel vertex detector and the stable micron-size SLC beams, and the b- and {bar b}-jets are identified using lifetime information and momentum-weighted track charge. Parity violating asymmetries in the b-quark polar and azimuthal angles are measured to test the Standard model. Two angular correlations between the three-jet plane and the Z{sup 0} polarization are used to perform symmetry tests. The CP-even and T-odd, and the CP-odd and T-odd, angular asymmetries are sensitive to physics beyond the Standard Model. The authors measure the expectation values of these quantities to be consistent with zero and set limits on the correlations at the 5% level.
- Research Organization:
- Stanford Univ., Stanford Linear Accelerator Center, CA (US); Boston Univ., MA (US); Univ. of California, Santa Barbara, CA (US); Univ. of California, Santa Cruz, CA (US); Colorado State Univ., Fort Collins, CO (US); Univ. of Colorado, Boulder, CO (US); Univ. of Illinois, Urbana, IL (US); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of Massachusetts, Amherst, MA (US); Massachusetts Inst. of Tech., Cambridge, MA (US); Univ. of Oregon, Eugene, OR (US); Univ. of Tennessee, Knoxville, TN (US); Univ. of Wisconsin, Madison, WI (US); Yale Univ., New Haven, CT (US)
- Sponsoring Organization:
- USDOE Office of Energy Research, Washington, DC (US); National Science Foundation, Washington, DC (US); United Kingdom Particle Physics and Astronomy Research Council (United Kingdom); Japan-US Cooperative Research Project on High Energy Physics, Nagoya (Japan) (US)
- DOE Contract Number:
- AC03-76SF00515; FG02-91ER40676; FG03-91ER40618; FG03-92ER40689; FG03-93ER40788; FG02-91ER40672; FG02-91ER40677; AC03-76SF00098; FG02-92ER40715; FC02-94ER40818; FG03-96ER40969; FG02-91ER40627; FG02-95ER40896; FG02-92ER40704
- OSTI ID:
- 664469
- Report Number(s):
- SLAC-PUB-7823; CONF-980748-; ON: DE98059222; CNN: Grant NSF PHY-91-13428; Grant NSF PHY-89-21320; Grant NSF PHY-92-04239; Grant NSF PHY-95-10439; Grant NSF PHY-88-19316; Grant NSF PHY-92-03212; TRN: US200305%%632
- Resource Relation:
- Conference: ICHEP '98: 29. international conference on high-energy physics, Vancouver, British Columbia (CA), 07/23/1998--07/30/1998; Other Information: Supercedes report DE98059222; PBD: Jun 1998; PBD: 1 Jun 1998
- Country of Publication:
- United States
- Language:
- English
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