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14 papers · 2 filters
Quark loop contribution to BFKL evolution: Running coupling and leading-N_f NLO intercept
Yuri V. Kovchegov, Heribert Weigert
We study the sea quark contribution to the BFKL kernel in the framework of Mueller's dipole model using the results of our earlier calculation. We first obtain the BFKL equation wi…
BBN And The CBR Probe The Early Universe
Gary Steigman
Big Bang Nucleosynthesis (BBN) and the Cosmic Background Radiation (CBR) provide complementary probes of the early evolution of the Universe and of its particle content. Neutrinos…
Stringy origin of non-Abelian discrete flavor symmetries
Tatsuo Kobayashi, Hans Peter Nilles, Felix Plöger +2
We study the origin of non-Abelian discrete flavor symmetries in superstring theory. We classify all possible non-Abelian discrete flavor symmetries which can appear in heterotic o…
Randall-Sundrum and Flipped SU(5)
Ben Dundee, Gerald B. Cleaver
In this letter, we construct a model based on a flipped SU(5) partial grand unified theory, within the framework of the Randall-Sundrum (RS1) proposal. Breaking of $\widetilde{SU}(…
Triumvirate of Running Couplings in Small-x Evolution
Yuri V. Kovchegov, Heribert Weigert
We study the inclusion of running coupling corrections into the non-linear small-x JIMWLK and BK evolution equations by resumming all powers of alpha_s N_f in the evolution kernels…
Running coupling and power corrections in nonlinear evolution at the high--energy limit
Einan Gardi, Janne Kuokkanen, Kari Rummukainen +1
A main feature of high-energy scattering in QCD is saturation in the number density of gluons. This phenomenon is described by non-linear evolution equations, JIMWLK and BK, which…