Initial state in heavy ion collisions
نویسندگان
چکیده
منابع مشابه
A Unified description of final state and initial state interactions in heavy ion collisions
We calculate the classical gluon field of a fast projectile passing through a dense medium. We show that this allows us to calculate both the initial state gluon production in proton-nucleus collisions and the final state gluon radiation off a hard parton produced in nucleus-nucleus collisions. This unified description of these two phenomena makes the relation between the saturation scale Qs an...
متن کاملScreening of initial parton production in ultrarelativistic heavy-ion collisions
Screening of initial parton production due to the presence of on-shell partons in high-energy heavy-ion collisions is discussed. It is shown that the divergent cross sections in the calculation of parton production can be regulated self-consistently without an ad hoc cut-off, and that the resultant parton production and transverse energy production rate are finite. Consequences on the energy de...
متن کاملThe initial gluon multiplicity in heavy ion collisions
The initial gluon multiplicity per unit area per unit rapidity, dN/L2/dη, in high energy nuclear collisions, is equal to fN(gμL)(gμ)/g, with μ2 proportional to the gluon density per unit area of the colliding nuclei. For an SU(2) gauge theory, we compute fN (g2μL) = 0.14 ± 0.01 for a wide range in g2μL. Extrapolating to SU(3), we predict dN/L2/dη for values of g2μL in the range relevant to the ...
متن کاملCorrelations and Fluctuations in the Initial State of high energy Heavy Ion Collisions
Initial states of high energy heavy ion collisions are studied using a dipole model through the DIPSY event generator that dynamically includes saturation together with the fluctuations and correlations of the BFKL cascade. The eccentricities ε1,2,3,4 are calculated at RHIC and LHC. Predictions are made for correlations and fluctuations in rapidity of the eccentricities, and conventional theore...
متن کاملInitial State Energy Loss Dependence of J/Ψ and Drell-Yan in Relativistic Heavy Ion Collisions
We present a Glauber-based study of J/Ψ and Drell-Yan yields in nucleus-nucleus collisions. Using this approach, we have investigated the impact of energy loss by the colliding nuclei on observed yields and transverse momentum spectra of J/Ψ and Drell-Yan. These studies permit an assessment of the importance of initial state energy loss in relation to “anomalous” J/Ψ suppression.
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ژورنال
عنوان ژورنال: Nuclear and Particle Physics Proceedings
سال: 2016
ISSN: 2405-6014
DOI: 10.1016/j.nuclphysbps.2016.05.007