12-18 August 2012
US/Eastern timezone

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Derivation of the medium-induced splitting kernels from Soft Collinear Effective Theory with Glauber gluons

17 Aug 2012, 16:50


Oral Presentation New theoretical developments Parallel 7E: New Theoretical Developments (Chair P. Levai)


grigory ovanesyan (LANL)


We derive the splitting kernels for partons produced in large Q^2 scattering processes that subsequently traverse a region of strongly-interacting matter using a recently-developed effective theory Soft Collinear Effective Theory with Glauber Gluons (SCETG). We include all corrections beyond the small-x approximation, consistent with the power counting of SCETG. We demonstrate how medium recoil, geometry, expansion scenarios, and phase space cuts can be implemented numerically for phenomenological applications and quantify the effect of these uncertainties. We also prove the factorization of the medium-induced splitting from the hard process that creates the jet. We show that in the soft gluon approximation our result reduces to the parton energy loss obtained in the framework of the reaction operator approach. This limit is illustrated with an application to inclusive hadron suppression and comparison to the new ALICE and CMS results at the LHC. We discuss ongoing work on obtaining next-to-leading order splitting kernels in the medium and possible applications to heavy ion event generators.

Primary author


Dr Ivan Vitev (LANL)

Presentation Materials

Peer reviewing