John C. Collins and Xiaomin Zu JHEP06(2002)018 doi:10.1088/1126-6708/2002/06/018
Parton distribution functions suitable for Monte-Carlo event generators
John C. Collins1 and Xiaomin Zu1
Show affiliationsIn the usual factorization theorems, which give predictions only for inclusive cross sections, there is considerable freedom in the choice of the scheme to define the parton distribution functions. These theorems do not directly apply to Monte-Carlo event generators, and more general factorization theorems which give predictions for fully exclusive cross sections are needed. It has been shown that appropriate parton distribution functions are uniquely defined by the showering algorithm. In this paper, we present results of calculations of the Monte-Carlo parton distribution functions in terms of the commonly used 
parton distribution functions. At small x the differences are large, which demonstrates the importance of using the correct parton distribution functions in an event generator rather than parton distribution functions. We present some simple approximations that enable an understanding of the sizes of the results to be obtained.
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E-print Number: hep-ph/0204127
Cited: by |
Refers: to
- PACS
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12.38.Aw General properties of QCD (dynamics, confinement, etc.)
- Subjects
- Dates
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Issue 06 (June 2002)
Received 17 April 2002, accepted for publication 10 June 2002
Published 18 June 2002
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Parton distribution functions suitable for Monte-Carlo event generators
John C. Collins and Xiaomin Zu JHEP06(2002)018
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