منابع مشابه
Heavy quark production at high energy
We report on QCD radiative corrections to heavy quark production valid at high energy. The formulae presented will allow a matched calculation of the total cross section which is correct at O(α s) and includes resummation of all terms of order α s[αs ln(s/m )]. We also include asymptotic estimates of the effect of the high energy resummation. A complete description of the calculation of the hea...
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Heavy quark energy loss in a hot QCD plasma is computed taking into account the competing effects due to suppression of zeroth order gluon radiation bellow the plasma frequency and the enhancement of gluon radiation due to transition energy loss and medium induced Bremsstrahlung. Heavy quark medium induced radiative energy loss is derived to all orders in opacity, (L/λg) . Numerical evaluation ...
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Heavy quark medium induced radiative energy loss is derived to all orders in opacity, (L/λg) . The analytic expression generalizes the GLV opacity expansion for massless quanta to heavy quarks with mass M in a QCD plasma with a gluon dispersion characterized by an asymptotic plasmon mass, mg = gT/ √ 2. Remarkably, we find that the general result is obtained by simply shifting all frequencies in...
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We give a theoretical overview of the heavy quark tomography puzzle posed by recent nonphotonic single electron data from central Au+Au collisions at √ s = 200 AGeV. We show that radiative energy loss mechanisms alone are not able to explain large single electron suppression data, as long as realistic parameter values are assumed. We argue that combined collisional and radiative pQCD approach c...
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ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 2013
ISSN: 0375-9474
DOI: 10.1016/j.nuclphysa.2013.01.061