Abstract
The charged particle multiplicity distributions for two-jet events ine + e − annihilation at 29 GeV have been measured using the High Resolution Spectrometer at PEP. A Poisson distribution describes the data for both the complete event and for the single jets. In addition, no correlation is observed between the multiplicities in the two jets of an event. For fixed values of the prong number of the complete event, the multiplicity sharing between the two jets is in good agreement with a binomial distribution. The rapidity gap distribution is exponential with a slope equal to the mean rapidity density. These observations, which are consistent with a picture of independent emission of single particles, are contrasted to the results from soft hadronic collisions and conclusions are drawn about the nature of clusters.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
J. Whitmore: Phys. Rep. 10C (1974) 273; ibid. 27C (1976) 187
L. Foa: Phys. Rep. 22 (1975) 1; G. Giacomelli, M. Jacob: ibid. 55 (1979) 1
T. Ludlam, R. Slansky: Phys. Rev. D 8 (1973) 1408; A.W. Chao, C. Quigg: Phys. Rev. D9 (1974) 2016; E. Berger: Nucl. Phys. B85 (1975) 61
D. Bender et al.: Phys. Rev. D 30 (1984) 515
M. Derrick et al.: Phys. Rev. D 34 (1986) 3304
A recent review is given by M. Derrick: Proceedings of the First Aspen Winter Physics Conference, M. Block, (ed.). Ann. N.Y. Acad. Sci. 461 (1986) 213
F.T. Dao, J. Whitmore: Phys. Lett. 46B (1973) 252
T. Kafka et al.: Phys. Rev. Lett. 34 (1975) 687
C. Quigg, P. Pirila, G.H. Thomas: Phys. Rev. Lett. 34 (1975) 290; ibid.: Phys. Rev. D12 (1975) 92; P. Pirila, G.H. Thomas: Nucl. Phys. B86 (1975) 526
K. Eggert et al.: Nucl. Phys. B 86 (1975) 201; T. Kafka et al.: Phys. Rev. D16 (1977) 1261
S. Uhlig et al.: Nucl. Phys. B 132 (1978) 15
A summary of resonance production in high energy collisions is given by A. Wroblewski: Acta Phys. Pol. B 16 (1985) 379
K. Alpgard et al.: Phys. Rev. 123B (1983) 361; B. Asman: Ph.D. Thesis, Stockholm, 1985 (unpublished)
P. Carruthers, C.C. Shih: Phys. Lett. 165B (1985) 209; A. Giovannini, L. Van Hove: Z. Phys. C — Particles and Fields 30 (1986) 391. The latter authors show that the multiplicity distribution, when interpreted with the negative binomial distribution, gives the cluster multiplicity 〈n〉 c . The result is: {fx328-1} whereB=〈n〉/〈n〉+k. This equation gives 〈n〉 c values close to one for thee + e − data reported by M. Derrick et al.; Phys. Lett. 168B (1986) 299
T.T. Chou, C.N. Yang: Phys. Lett. 135B (1985) 175; Phys. Rev. Lett. 55 (1985) 1359
M. Althoff et al.: Phys. Lett. 135B (1984) 243; M. Sakuda et al.: Phys. Lett. 152B (1985) 399; P. Kesten et al.: Phys. Lett. 161B (1985) 412
T.T. Chou, C.N. Yang: Phys. Lett. 167B (1986) 453
Cai Xu et al.: Phys. Rev. D 33 (1986) 1287
M. Althoff et al.: Z. Phys. C — Particles and Fields 29 (1986) 347
M. Valdata-Nappi: Proc. of XIV Symposium on Multiparticle Dynamics, P. Yager, J.F. Gunion (eds.) p. 75
D. Bender et al.: Phys. Rev. D 31 (1985) 1
M. Derrick et al.: Phys. Lett. 158B (1985) 519; S. Abachi et al.: Phys. Rev. Lett. 57 (1986) 1990
A. Capella, V. Sukhatme, J. Tran Than Van: Z. Phys. C — Particles and Fields 3 (1980) 329
J. Dias de Deus: Nucl. Phys. B 59 (1973) 231; S. Barshay, Y. Yamaguchi: Phys. Lett. 51B (1974) 376; T.T. Chou, C.N. Yang, E. Yen: Phys. Rev. Lett. 54 (1985) 510
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Derrick, M., Gan, K.K., Kooijman, P. et al. Charged particle multiplicity distributions ine + e − annihilation at 29 GeV: a comparison with hadronic data. Z. Phys. C - Particles and Fields 35, 323–328 (1987). https://doi.org/10.1007/BF01570767
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF01570767