rcbkdipole

This code provides rcBK evolved dipole amplitude

Based on T. Lappi, H. Mäntysaari Phys.Rev. D88 (2013) 114020, arXiv:1309.6963

The "mvgamma" fit parameters are from Albacete, Armesto, Milhano, Quiroga-Arias, Salgado, Eur. Phys. J C71, 1705, arXiv:1012.4408

Initial condition for the LO BK evolution is fitted to the HERA data. The resulting dipole amplitudes can be found in data tables in data directory

This code interpolates in dipole size and rapidity/Bjorken-x

Building

Requires

• Cmake
• GSL

How to compile:

 mkdir build
 cd build
 cmake ..
 make

This generates a library build/lib/libamplitude.a that you can link in your own program.

How to use

See the example code in file src/dipole_amplitude.cpp

Data tables for protons

• data/proton/mv.dat MV parametrization
• data/proton/mve.dat MVe parametrization
• data/proton/mvgamma.dat MVgamma parametrization

Data tables for Pb

• data/Pb/mve/glauber_mve_X

Here X refers to the impact parameter in GeV^(-1), all impact parameters are evolved independently.

Questions and comments

This should be robust and maintained code, if you find bugs, please send an email to [email protected]