Anomalous dimension of subleading-power N-jet operators. Part II

被引:56
作者
Beneke, Martin [1 ]
Garny, Mathias [1 ]
Szafron, Robert [1 ]
Wang, Jian [1 ]
机构
[1] Tech Univ Munich, Phys Dept T31, James Franck Str 1, D-85748 Garching, Germany
关键词
Effective Field Theories; Perturbative QCD; COLLINEAR EFFECTIVE THEORY; SOFT; ENERGY;
D O I
10.1007/JHEP11(2018)112
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We continue the investigation of the anomalous dimension of subleading-power N-jet operators. In this paper, we focus on the operators with fermion number one in each collinear direction, corresponding to quark (antiquark) initiated jets in QCD. We investigate the renormalization effects induced by the soft loop and compute the one-loop mixing of time-ordered products involving power-suppressed SCET Lagrangian insertions into N-jet currents through soft loops. We discuss fermion number conservation in collinear directions and provide explicit results for the collinear anomalous dimension matrix of the currents. The Feynman rules for the power-suppressed SCET interactions in the position-space formalism are collected in an appendix.
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页数:70
相关论文
共 30 条
[1]   Soft-collinear factorization in effective field theory [J].
Bauer, CW ;
Pirjol, D ;
Stewart, FW .
PHYSICAL REVIEW D, 2002, 65 (05) :17
[2]  
Becher T, 2015, LECT NOTES PHYS, V896, pE1, DOI 10.1007/978-3-319-14848-9_10
[3]   Infrared Singularities of Scattering Amplitudes in Perturbative QCD (vol 102, 162001, 2009) [J].
Becher, Thomas ;
Neubert, Matthias .
PHYSICAL REVIEW LETTERS, 2013, 111 (19)
[4]   On the structure of infrared singularities of gauge-theory amplitudes (vol 6, 081, 2009) [J].
Becher, Thomas ;
Neubert, Matthias .
JOURNAL OF HIGH ENERGY PHYSICS, 2013, (11)
[5]   On the structure of infrared singularities of gauge-theory amplitudes [J].
Becher, Thomas ;
Neubert, Matthias .
JOURNAL OF HIGH ENERGY PHYSICS, 2009, (06)
[6]   Infrared Singularities of Scattering Amplitudes in Perturbative QCD [J].
Becher, Thomas ;
Neubert, Matthias .
PHYSICAL REVIEW LETTERS, 2009, 102 (16)
[7]   Heavy-to-light B meson form factors at large recoil energy -: spectator-scattering corrections [J].
Beneke, M ;
Yang, D .
NUCLEAR PHYSICS B, 2006, 736 (1-2) :34-81
[8]   Multipole-expanded soft-collinear effective theory with non-Abelian gauge symmetry [J].
Beneke, M ;
Feldmann, T .
PHYSICS LETTERS B, 2003, 553 (3-4) :267-276
[9]   Soft-collinear effective theory and heavy-to-light currents beyond leading power [J].
Beneke, M ;
Chapovsky, AP ;
Diehl, M ;
Feldmann, T .
NUCLEAR PHYSICS B, 2002, 643 (1-3) :431-476
[10]  
Beneke M., 2017, ARXIV171207462