Momentum sum rules for fragmentation functions

作     者：Meissner, S. Metz, A. Pitonyak, D. 

作者机构：Temple Univ Dept Phys Philadelphia PA 19122 USA Ruhr Univ Bochum Inst Theoret Phys 2 D-44780 Bochum Germany 

出 版 物：《PHYSICS LETTERS B》 (Phys Lett Sect B Nucl Elem Part High-Energy Phys)

年 卷 期：2010年第690卷第3期

页      面：296-303页

核心收录：

学科分类：07[理学] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：BMBF NSF [PHY-0855501] Division Of Physics Direct For Mathematical & Physical Scien Funding Source: National Science Foundation 

主　　题：Transverse momentum dependent parton correlators Fragmentation functions Sum rules 

摘      要：Momentum sum rules for fragmentation functions are considered. In particular, we give a general proof of the Schafer-Teryaev sum rule for the transverse momentum dependent Collins function. We also argue that corresponding sum rules for related fragmentation functions do not exist. Our model-independent analysis is supplemented by calculations in a simple field-theoretical model. (c) 2010 Elsevier B.V. All rights reserved.