Radiative energy loss and p⊥-broadening of high energy partons in nuclei
| Autor: | S. Peign, Alfred H. Mueller, Yu.L. Dokshitzer, Rudolf Baier, Dominique Schiff |
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| Rok vydání: | 1997 |
| Předmět: |
Physics
Quark Nuclear and High Energy Physics Particle physics Scattering Nuclear Theory High Energy Physics::Phenomenology FOS: Physical sciences Parton Nuclear matter Gluon High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) High Energy Physics::Experiment Nuclear Experiment Jet quenching Glauber Energy (signal processing) |
| Zdroj: | Nuclear Physics B. 484:265-282 |
| ISSN: | 0550-3213 |
| DOI: | 10.1016/s0550-3213(96)00581-0 |
| Popis: | The medium-induced $p_{\perp}$-broadening and induced gluon radiation spectrum of a high energy quark or gluon traversing a large nucleus is studied. Multiple scattering of the high energy parton in the nucleus is treated in the Glauber approximation. We show that -dE/dz, the radiative energy loss of the parton per unit length, grows as L, the length of the nuclear matter, as does the characteristic transverse momentum squared of the parton $p_{\perp W}^2$. We find dE/dz = (1/8)\alpha_s N_c $p_{\perp W}^2$ holds independent of the details of the parton-nucleon scatterings so long as L is large. Numerical estimates suggest that $p_{\perp}$-broadening and energy loss may be significantly enhanced in hot matter as compared to cold matter, thus making the study of such quantities a possible signal for quark-gluon plasma formation. Comment: LaTex2e, 18 pages, epsf, 2 postscript figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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