Publication: Nonperturbative fragmentation of the top quark
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1991-11-01
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American Physical Society
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Abstract
By the use of a simple phenomenological string model, the energy lost by the top quark through nonperturbative fragmentation effects before its weak decay is computed. This energy lost is in first approximation proportional to the rate between the decay time and the hadronization time of the top as measured in the center-of-mass frame of the top and its color partner. Precise computations of the energy lost by the top in terms of its mass when produced in colliders such as the Fermilab Tevatron, CERN Large Hadron Collider, Superconducting Super Collider, and CERN Linear Collider are presented. As expected, this effect decreases quickly with the top mass but it could be relevant for a top mass below 100 GeV.
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©1991 The American Physical Society.
This work has been supported by the Ministerio de Educación y Ciencia (Spain) (A.D.) and a CICYT project (AEN90-0034). A.D. would like to thank M. J. Herrero for bringing to his attention the interesting paper by Orr and Rosner [3] and the CERN Theory Division for its hospitality when this work was done and M.U. would like to thank P. Hernandez and J. Terron for useful discussions
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[1] CDF Collaboration, F. Abe et al. , Phys. Rev. Lett. 64, 142 (1990).
[2] I. I. Y. Bigi et al. , Phys. Lett. B 181, 157 (1986).
[3] L. H. Orr and J. L. Rosner, Phy. Lett. B 246, 221 1990); 248, 474 (1990).
[4] B. Andersson, G. Gustafson, G. Ingelman, and T. Sjostrand, Phys. Rep. 97, 32 (1983).
[5] A. Chodos and C. B. Thorn, Nucl. Phys. B72, 509 (1974); W. A. Bardeen, I. Bars, A. J. Hanson, and R. D. Peecei, Phys. Rev. D 13, 2364 (1976).
[6] F. E. Low and K. Gottfried, Phys. Rev. D 17, 2487 (1978).
[7] J. D. Bjorken, Phys. Rev. D 17, 171 (1978); C. Peterson, D. Schlatter, I. Schmitt, and P. M. Zerwas, ibid. 27, 105 (1983).
[8] G. Gustafson, Z. Phys. C 15, 155 (1982); H. U. Bengstrom, Comput. Phys. Comxnun. 31, 323 (1984).
[9] G. 't Hooft, Nucl. Phys. B72, 641 {1974);E. Witten, ibid 8160, 57 (1979).
[10] E. Eichten, I. Hinchliffe, K. Lane, and C. Quigg, Rev. Mod. Phys. 56, 579 (1984).
[11] A. B.Migdal, Nucl. Phys. A518, 358 (1990).
[12] P. Zerwas, lecture given in 1990—1991 Academic Training Program, CERN, Geneva, Switzerland (unpublished); G. Unal and L. Fayard, Aachen, Germany, 1990, edited by G. Jarlskog and D. Rein (CERN Report No. 90-10, Geneva, Switzerland, 1990), Vol. II, p. 360.
[13] L. H. Orr, Phys. Rev. D 44, 88 (1991