Soft-collinear messengers: A new mode in soft-collinear effective theory

被引：55

作者：

Becher, T ^{[1
]}

Hill, RJ

Neubert, M

机构：

[1] Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA

[2] Cornell Univ, Inst High Energy Phenomenol, Newman Lab Elementary Particle Phys, Ithaca, NY 14853 USA

来源：

PHYSICAL REVIEW D | 2004年 / 69卷 / 05期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevD.69.054017

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

It is argued that soft-collinear effective theory for processes involving both soft and collinear partons, such as exclusive B-meson decays, should include a new mode in addition to soft and collinear ones. These "soft-collinear messengers" can interact with both soft and collinear particles without taking them far off-shell. They thus can communicate between the soft and collinear sectors of the theory. The relevance of the new mode is demonstrated with an explicit example, and the formalism incorporating the corresponding quark and gluon fields into the effective Lagrangian is developed.

引用

页数：13

共 26 条

[1] Power suppressed operators and gauge invariance in soft-collinear effective theory [J].

Bauer, CW ;

Pirjol, D ;

Stewart, IW .

PHYSICAL REVIEW D, 2003, 68 (03)

[2] Factorization and end point singularities in heavy-to-light decays [J].

Bauer, CW ;

Pirjol, D ;

Stewart, IW .

PHYSICAL REVIEW D, 2003, 67 (07)

[3] Proof of factorization for B→Dπ -: art. no. 201806 [J].

Bauer, CW ;

Pirjol, D ;

Stewart, IW .

PHYSICAL REVIEW LETTERS, 2001, 87 (20) :201806-1

[4] Soft-collinear factorization in effective field theory [J].

Bauer, CW ;

Pirjol, D ;

Stewart, FW .

PHYSICAL REVIEW D, 2002, 65 (05) :17

[5]

Bauer CW, 2001, PHYS REV D, V63, DOI 10.1103/PhysRevD.63.114020

[6] Invariant operators in collinear effective theory [J].

Bauer, CW ;

Stewart, IW .

PHYSICS LETTERS B, 2001, 516 (1-2) :134-142

[7]

Becher T., UNPUB

[8] QCD factorization for exclusive non-leptonic B-meson decays:: general arguments and the case of heavy-light final states [J].

Beneke, M ;

Buchalla, G ;

Neubert, M ;

Sachrajda, CT .

NUCLEAR PHYSICS B, 2000, 591 (1-2) :313-418

[9] 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

[10] QCD factorization for B → ππ decays:: Strong phases and CP violation in the heavy quark [J].

Beneke, M ;

Buchalla, G ;

Neubert, M ;

Sachrajda, CT .

PHYSICAL REVIEW LETTERS, 1999, 83 (10) :1914-1917

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