Photon bremsstrahlung from quark jet via transverse and longitudinal scatterings: single versus multiple scatterings
arXiv:1603.04679 · doi:10.1103/PhysRevC.94.024916
Abstract
We study the production of jet-bremsstrahlung photons through the scattering with the constituents of a dense nuclear matter within the framework of deep-inelastic scattering off a large nucleus. Applying a gradient expansion up to the second order for the exchanged three-dimensional momentum between jet and medium, we derive the single photon bremsstrahlung spectrum with the inclusion of the contributions from the transverse broadening as well as the longitudinal drag and diffusion of the hard parton's momentum. We also compare the medium-induced photon radiation spectra for single scattering and from the resummation of multiple scatterings. It is found that the coupling between different scatterings can give additional contribution to medium-induced photon radiation, while for small momentum exchange, the leading contribution from the drag and diffusions to the photon emission spectra remain the same for single and multiple scatterings.
25 pages, 4 figures
References in corpus (20)
- The theory and phenomenology of perturbative QCD based jet quenching
- Radiative and Collisional Jet Energy Loss in the Quark-Gluon Plasma at RHIC
- Systematic Comparison of Jet Energy-Loss Schemes in a realistic hydrodynamic medium
- Dihadron Tomography of High-Energy Nuclear Collisions in NLO pQCD
- Collisional Energy Loss in a Finite Size QCD Matter
- Radiative energy loss in a finite dynamical QCD medium
- Finite-size effects on the radiative energy loss of a fast parton in hot and dense strongly interacting matter
- Extending Soft-Collinear-Effective-Theory to describe hard jets in dense QCD media
- Energy and momentum deposited into a QCD medium by a jet shower
- Higher twist jet broadening and classical propagation
- Full jet evolution in quark-gluon plasma and nuclear modification of jet production and jet shape in Pb+Pb collisions at 2.76 ATeV at the LHC
- The sound produced by a fast parton in the quark-gluon plasma is a "crescendo"
- Elastic energy loss and longitudinal straggling of a hard jet
- The evolving distribution of hard partons traversing a hot strongly interacting plasma
- Angular variation of hard back-to-back hadron suppression in heavy-ion collisions
- Photon bremsstrahlung and diffusive broadening of a hard jet
- Jet transport and photon bremsstrahlung via longitudinal and transverse scattering
- Failure of the collinear expansion in calculation of the induced gluon emission
- Multiple scattering of heavy-quarks in dense matter and the parametric prominence of drag
- Multiple parton scattering in nuclei: gauge invariance