Geodesic
Quark propagation and hadron formation observation at CLAS
Proceedings of the Yerevan State University. Physical and mathematical sciences, no. 2 (2008), pp. 57-63 
W. Brooks; H. L. Hakobyan. Quark propagation and hadron formation observation at CLAS. Proceedings of the Yerevan State University. Physical and mathematical sciences, no. 2 (2008), pp. 57-63. http://geodesic.mathdoc.fr/item/UZERU_2008_2_a9/
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     author = {W. Brooks and H. L. Hakobyan},
     title = {Quark propagation and hadron formation observation at {CLAS}},
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     year = {2008},
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     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZERU_2008_2_a9/}
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Voir la notice de l'article provenant de la source Math-Net.Ru

In this paper are presented the perspectives of investigation in CLAS detector at Jefferson Lab (TJNAF) of the physics of the quark propagation in cold QCD matter and the resulting hadronization process. The determination of the "production time" and "formation time" are given as well as their interpretation as quark energy loss resulting in transverse momentum broadening of the produced hadron and hadronic attenuation in the nuclear medium. A novel target setup was used for these measurements in CLAS where two targets were placed in the beam simultaneously and a newly developed $\pi^+$ identification technique is presented from the $\mathrm{EG2}$ experiment [1].

[1] W. Brooks, Quark Propagation Through Cold QCD Matter, Proposal E-02-104 Jefferson Lab. Experiment, 2003

[2] B. A. Mecking et al. (CLAS Collaboration), “The CEBAF Large Acceptance Spectrometer (CLAS).”, Nucl.Instrum.Meth. A, 503 (2003), 513–553 | DOI

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[4] V. Del Duca, S.J. Brodsky, P.Hoyer, “Space-time structure of deep-inelastic lepton-hadron scattering”, Phys. Rev. D, 46 (1992), 931–943 | DOI

[5] M. D. Mestayer et al., “The CLAS drift chamber system”, Nucl. Inst. and Meth. A, 449 (2000), 81–111 | DOI

[6] G. Adams, V. Burket et al., “The CLAS Cherenkov detector”, Nucl. Instr. and Meth. A, 465 (2001), 414–427 | DOI

[7] E. S. Smith et al., “The time-of-flight system for CLAS”, Nucl. Instr. and Meth. A, 443 (1999), 265–298 | DOI

[8] M. Amarian et al., “The CLAS forward electromagnetic calorimeter”, Nucl. Instr. and Meth. A, 460 (2001), 239–265 | DOI

[9] H. Hakobyan, EG2 Target CLAS-NOTE, 2008

[10] E. Wolin, GSIM User’s Guide. Version 1.0. (CLAS-NOTE), USA, 1995