Advanced

On single and double soft behaviors in NLSM

Du, Yijian LU and Luo, Hui (2015) In Journal of High Energy Physics
Abstract
In this paper, we study the single and double soft behaviors of tree level off-shell currents and on-shell amplitudes in nonlinear sigma model (NLSM). We first propose and prove the leading soft behavior of the tree level currents with a single soft particle. In the on-shell limit, this single soft emission becomes the Adler's zero. Then we establish the leading and subleading soft behaviors of tree level currents with two adjacent soft particles. With a careful analysis of the on-shell limit, we obtain the double soft behaviors of on-shell amplitudes where the two soft particles are adjacent to each other. By applying Kleiss-Kuijf (KK) relation, we further obtain the leading and subleading behaviors of amplitudes with two nonadjacent soft... (More)
In this paper, we study the single and double soft behaviors of tree level off-shell currents and on-shell amplitudes in nonlinear sigma model (NLSM). We first propose and prove the leading soft behavior of the tree level currents with a single soft particle. In the on-shell limit, this single soft emission becomes the Adler's zero. Then we establish the leading and subleading soft behaviors of tree level currents with two adjacent soft particles. With a careful analysis of the on-shell limit, we obtain the double soft behaviors of on-shell amplitudes where the two soft particles are adjacent to each other. By applying Kleiss-Kuijf (KK) relation, we further obtain the leading and subleading behaviors of amplitudes with two nonadjacent soft particles. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Scattering Amplitudes, Global Symmetries
in
Journal of High Energy Physics
issue
8
publisher
Springer
external identifiers
  • wos:000363519700005
  • scopus:84939208091
ISSN
1126-6708
DOI
10.1007/JHEP08(2015)058
language
English
LU publication?
yes
id
306d6549-115c-4446-be15-113d55221e73 (old id 8407729)
date added to LUP
2015-12-21 08:01:23
date last changed
2017-10-22 03:16:46
@article{306d6549-115c-4446-be15-113d55221e73,
  abstract     = {In this paper, we study the single and double soft behaviors of tree level off-shell currents and on-shell amplitudes in nonlinear sigma model (NLSM). We first propose and prove the leading soft behavior of the tree level currents with a single soft particle. In the on-shell limit, this single soft emission becomes the Adler's zero. Then we establish the leading and subleading soft behaviors of tree level currents with two adjacent soft particles. With a careful analysis of the on-shell limit, we obtain the double soft behaviors of on-shell amplitudes where the two soft particles are adjacent to each other. By applying Kleiss-Kuijf (KK) relation, we further obtain the leading and subleading behaviors of amplitudes with two nonadjacent soft particles.},
  articleno    = {058},
  author       = {Du, Yijian and Luo, Hui},
  issn         = {1126-6708},
  keyword      = {Scattering Amplitudes,Global Symmetries},
  language     = {eng},
  number       = {8},
  publisher    = {Springer},
  series       = {Journal of High Energy Physics},
  title        = {On single and double soft behaviors in NLSM},
  url          = {http://dx.doi.org/10.1007/JHEP08(2015)058},
  year         = {2015},
}