Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-05-14
Phys.Rev. D74 (2006) 114024
Physics
High Energy Physics
High Energy Physics - Phenomenology
16 pages, 5 figures, the version to appear in Phys.Rev.D
Scientific paper
The cross section of the diffractive Drell-Yan (DY) process, pp->(l-lbar X)p, where the system (l-lbar X) is separated by a large rapidity gap from the recoil proton, is calculated in the light-cone dipole approach. This process reveals unusual features, quite different from what is known for diffractive DIS and nonabelian radiation: (i) the diffractive radiation of a heavy dilepton by a quark vanishes in the forward direction; (ii) the diffractive production of a dilepton is controlled by the large hadronic radius; (iii) in contrast with DIS where diffraction is predominantly soft, the diffractive DY reaction is semihard-semisoft; (iv) as a result of the saturated shape of the dipole cross section, the fraction of diffractive DY events steeply falls with energy, but rises as function of the hard scale. These features are common for other abelian bremsstrahlung processes (higgsstrahlung, Z-strahlung, etc.). Measurements of diffractive DY processes at modern colliders would be a sensitive probe for the shape of the dipole cross section at large separations.
Kopeliovich Boris Z.
Potashnikova I. K.
Schmidt Ivan
Tarasov A. B.
No associations
LandOfFree
Unusual Features of Drell-Yan Diffraction does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Unusual Features of Drell-Yan Diffraction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Unusual Features of Drell-Yan Diffraction will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-264655