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Hard four-jet production in pA collisions

  • B. Blok
  • M. Strikman
  • U. A. WiedemannEmail author
Regular Article - Theoretical Physics

Abstract

In a suitably chosen back-to-back kinematics, four-jet production in hadronic collisions is known to be dominated by contributions from two independent partonic scattering processes, thus giving experimental access to the structure of generalized two-parton distributions (2GPDs). Here, we show that a combined measurement of the double hard four-jet cross section in proton–proton and proton–nucleus collisions will allow one to disentangle different sources of two-parton correlations in the proton that cannot be disentangled with 4-jet measurements in proton–proton collisions alone. To this end, we analyze in detail the structure of 2GPDs in the nucleus (A), we calculate in the independent nucleon approximation all contributions to the double hard four-jet cross section in pA, and we determine corrections arising from the nuclear dependence of single parton distribution functions. We then outline an experimental strategy for determining the longitudinal two-parton correlations in the proton.

Keywords

Transverse Momentum Parton Distribution Parton Distribution Function Momentum Fraction Nuclear Modification 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

We thank Leonid Frankfurt, Vadim Guzey, and Daniele Treliani for useful discussions. The research of MS was partially supported by grant from the US Department of Energy.

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Copyright information

© Springer-Verlag Berlin Heidelberg and Società Italiana di Fisica 2013

Authors and Affiliations

  1. 1.Department of PhysicsTechnion—Israel Institute of TechnologyHaifaIsrael
  2. 2.Physics DepartmentPenn State UniversityUniversity ParkUSA
  3. 3.Theory DivisionCERNGenevaSwitzerland

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