Abstract
The density of charged particles near a single highp T trigger particle in proton-proton collisions has been studied with the SFM detector at the CERN-ISR. It is shown that:—the secondaries cluster in a jet-like manner about the trigger particle; —the momentum distributions in this trigger jet can be unambiguously separated from the spectator background distributions;—the momentum distributions in this trigger jet can be unambiguously separated from the spectator background distributions;—the momentum component transverse to the jet direction is exponentially damped;—the width of the transverse distributions increases with the momentum component along the jet;—the fractional longitudinal momentum density depends strongly on the trigger transverse momentum and scales with\(x_T = {{2p_T } \mathord{\left/ {\vphantom {{2p_T } {\sqrt s }}} \right. \kern-\nulldelimiterspace} {\sqrt s }}\). All these findings support the hard constituent scattering origin of highp T hadrons.
Similar content being viewed by others
References
S.M. Berman, J.D. Bjorken, J. Kogut: Phys. Rev.D 4, 3358 (1971); S.D. Ellis, M.B. Kislinger: Phys. Rev.D9, 2027 (1974)
See e.g. R. Sosnowski: Proc. Int. Conf. on High Energy Physics, Toyko (1978), p. 693 and ref. therein
D. Drijard et al.: Contr. XXIst Int. Conf. on High Energy Physics Paris (1982); D. Drijard et al.: Proc. XVIIth Rencontre de Moriond (1982)
W. Bell et al.: Nucl. Instrum. Methods156, 156 (1978)
D. Drijard et al.: Nucl. Phys.B208, 1 (1982)
G. Sterman, S. Weinberg: Phys. Rev. Lett.79, 1436 (1977)
M. Della Negra et al.: Nucl. Phys.B127, 1 (1977); T. Lohse: Diploma Thesis, Dortmund (1982) unpublished; H.G. Fischer: CERN (unpublished)
H.G. Fischer: Proc. Int. Conf. on High Energy Physics, p. 297. Lisbon (1981)
P. Darriulat: Ann. Rev. Nucl. Part. Sci.30, 159 (1980)
G. Hanson et al.: Phys. Rev.D26, 991 (1982)
J.L. Alonso et al.: Z. Phys. C—Particles and Fields6, 21 (1980)
R. Blankenbecler et al.: Phys. Rev.D18, 900 (1978)
Author information
Authors and Affiliations
Additional information
Now at CERN
Rights and permissions
About this article
Cite this article
Breakstone, A., Buchanan, C.D., Campanini, R. et al. Highp T hadrons as leading particles in jets produced at the ISR. Z. Phys. C - Particles and Fields 23, 9–18 (1984). https://doi.org/10.1007/BF01558036
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01558036