Prompt muon production in e/sup +/e/sup -/ annihilations at 29 GeV

Journal Article · Sat Jun 01 00:00:00 EDT 1985 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.31.2719· OSTI ID:5771252

Aihara, H; Alston-Garnjost, M; Badtke, D H; Bakken, J A; Barbaro-Galtieri, A; Barnes, A V; Barnett, B A; Bengtsson, H; Blumenfeld, B J; Bross, A D; Buchanan, C D; Chamberlain, O; Chien, C; Clark, A R; Cordier, A; Dahl, O I; Day, C T; Derby, K A; Eberhard, P H; Fancher, D L ; Fujii, H; Fujii, T; Gabioud, B; Gary, J W; Gorn, W; Hadley, N J; Hauptman, J M; Hofmann, W; Huth, J E; Hylen, J; Kamae, T; Kaye, H S; Kenney, R W; Kerth, L T; Koda, R I; Kofler, R R; Kwong, K K; Layter, J G; Lindsey, C S; Loken, S C; Lu, X; Lynch, G R; Madansky, L; Madaras, R J; Maruyama, K; Marx, J N; Matthews, J A.J.; Melnikoff, S O; Moses, W; Nemethy, P; Nygren, D R; Oddone, P J; Park, D A; Pevsner, A; Pripstein, M; Robrish, P R; Ronan, M T; Ross, R R; Rouse, F R; Sauerwein, R R; Shapiro, G; Shapiro, M D; Shen, B C; Slater, W E; Stevenson, M L; Stork, D H; Ticho, H K; Toge, N; van Daalen Wetters, R F; VanDalen, G J; van Tyen, R; Wang, E M; Way,

We have studied the production of prompt muons in hadronic events from e/sup +/e/sup -/ annihilation at a center-of-mass energy of 29 GeV with the PEP4-TPC (Time Projection Chamber) detector. The muon p and p/sub t/ distributions are well described by a combination of bottom- and charm-quark decays, with fitted semimuonic branching fractions of (15.2 +- 1.9 +- 1.2)% and (6.9 +- 1.1 +- 1.1)%, respectively. The muon spectra imply hard fragmentation functions for both b and c quarks, with = 0.80 +- 0.05 +- 0.05 and = 0.60 +- 0.06 +- 0.04. We derive neutral-current axial-vector couplings of a(b quark) = -0.9 +- 1.1 +- 0.3 and a(c quark) = 1.5 +- 1.5 +- 0.5 from the forward-backward asymmetries.

• Research Organization: Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720 University of California, Los Angeles, California 90024 University of California, Riverside, California 92521 Johns Hopkins University,
• OSTI ID: 5771252
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 31:11; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645102* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR DISTRIBUTION
ANNIHILATION
BASIC INTERACTIONS
BRANCHING RATIO
COMPOSITE MODELS
DATA
DISTRIBUTION
ELECTROMAGNETIC INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
FERMIONS
FLAVOR MODEL
FRAGMENTATION
GAS TRACK DETECTORS
INFORMATION
INTERACTIONS
JET MODEL
LEPTON-LEPTON INTERACTIONS
LEPTONS
LINEAR MOMENTUM
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MONTE CARLO METHOD
MUONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PROJECTION SPARK CHAMBERS
QUARK MODEL
RADIATION DETECTORS
SPARK CHAMBERS
TRANSVERSE MOMENTUM