Production of {pi}{sup {+-}}, K{sup {+-}}, K{sup 0}, K*{sup 0}, {phi}, p and {Lambda}{sup 0} in hadronic Z{sup 0} decays
Conference
·
OSTI ID:521614
- Nagoya Univ. (Japan)
- Tohoku Univ., Sendai (Japan)
- Stanford Univ., CA (United States). Stanford Linear Accelerator Center; and others
The authors have measured production rates as a function of momentum of the identified hadrons {pi}{sup +}, K{sup +}, K{sup 0}, K*{sup 0}, {phi}, p, {Lambda}{sup 0} and their antihadrons in inclusive hadronic Z{sup 0} decays, as well as separately in decays into light, c and b flavors. In addition they have compared hadron and antihadron production rates in light quark (rather than antiquark) jets. The SLD Cherenkov Ring Imaging Detector was used to identify charged hadrons. The vertex detector was used to tag high-purity samples of light- and b-flavor events. The electron beam polarization was used to tag samples of quark and antiquark jets. Clear flavor dependences are observed, consistent with expectations based upon measured production and decay properties of heavy hadrons. They use the light-flavor results to test the predictions of MLLA QCD and of various fragmentation models. Differences between hadron and antihadron production in light quark jets are observed at high momentum fraction, providing direct evidence that higher-momentum particles are more likely to contain a primary quark or antiquark, and they use these results to make a new direct measurement of strangeness suppression in the jet fragmentation process.
- Research Organization:
- Stanford Linear Accelerator Center, Menlo Park, CA (United States); Boston Univ., MA (United States); California Univ., Santa Barbara, CA (United States); California Univ., Santa Cruz, CA (United States); Colorado State Univ., Fort Collins, CO (United States); Colorado Univ., Boulder, CO (United States); Illinois Univ., Urbana, IL (United States); California Univ., Berkeley, CA (United States); Massachusetts Univ., Amherst, MA (United States); Massachusetts Inst. of Tech., Cambridge, MA (United States); Oregon Univ., Eugene, OR (United States); Tennessee Univ., Knoxville, TN (United States); Wisconsin Univ., Madison, WI (United States); Yale Univ., New Haven, CT (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research, Washington, DC (United States); National Science Foundation, Washington, DC (United States); United Kingdom Particle Physics and Astronomy Research Council (United Kingdom); Istituto Nazionale di Fisica Nucleare, Rome (Italy); Japan-US Cooperative Research Project on High Energy Physics, Nagoya (Japan); Korea Science and Engineering Foundation (Korea, Republic of)
- 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:
- 521614
- Report Number(s):
- SLAC-PUB--7571; CONF-970787--1; CONF-970870--1; ON: DE97007964; CNN: Grant NSF PHY-91-13428; PHY-89-21320; PHY-92-04239; PHY-95-10439; PHY-88-19316; PHY-92-03212
- Country of Publication:
- United States
- Language:
- English
Similar Records
Production of Charged {pi}{sup {+-}}, {Kappa}{sup {+-}} and p/p in Hadronic Z{sup 0} Decays
Production of {pi}{sup +}, K{sup +}, K{sup 0}, K{sup {asterisk}0}, {phi}, p and {Lambda}{sup 0} in hadronic Z{sup 0} decays
Production of Charged pi, K and p in Hadronic Z0 Decays
Technical Report
·
Fri Jul 09 00:00:00 EDT 1999
·
OSTI ID:10088
Production of {pi}{sup +}, K{sup +}, K{sup 0}, K{sup {asterisk}0}, {phi}, p and {Lambda}{sup 0} in hadronic Z{sup 0} decays
Journal Article
·
Sun Feb 28 23:00:00 EST 1999
· Physical Review, D
·
OSTI ID:328565
Production of Charged pi, K and p in Hadronic Z0 Decays
Technical Report
·
Wed Sep 04 00:00:00 EDT 2002
·
OSTI ID:801778