A study of correlations between identified charged hadrons in hadronic Z{sup 0} decays
- Aomori Univ. (Japan)
- Nagoya Univ. (Japan)
- Stanford Univ., CA (US). Stanford Linear Accelerator Center; and others
The authors present a preliminary study of correlations in rapidity between pairs of identified pions, kaons and protons in hadronic Z{sup 0} decays into light flavors. Short range charge correlations are observed between all combinations of these hadron species, confirming that charge, strangeness and baryon number are conserved locally in the jet fragmentation process. The range of this effect is found to be independent of momentum. A strong long-range correlation is observed for high-momentum charged kaon pairs, and weaker long-range {pi}{sup +}-{pi}{sup -}, {pi}{sup +}-K{sup -} and p-K{sup -} correlations are observed. The SLC electron beam polarization is used to tag the quark hemisphere in each event, allowing the first study of rapidities signed such that positive rapidity is along the quark rather than antiquark direction. Distributions of signed rapidities and of ordered differences between signed rapidities provide new insights into leading particle production and several new tests of fragmentation models.
- 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:
- 664470
- Report Number(s):
- SLAC-PUB-7824; CONF-980748-; ON: DE98059223; 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%%633
- 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 DE98059223; PBD: Jun 1998; PBD: 1 Jun 1998
- Country of Publication:
- United States
- Language:
- English
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