On the rotational invariance and non-invariance of lepton angular distributions in Drell-Yan and quarkonium production

Jen-Chieh Peng*, Daniel Boer, Wen-Chen Chang, Randall Evan McClellan, Oleg Teryaev

*Bijbehorende auteur voor dit werk

OnderzoeksoutputAcademicpeer review

7 Citaten (Scopus)
47 Downloads (Pure)


Several rotational invariant quantities for the lepton angular distributions in Drell-Yan and quarkonium production were derived several years ago, allowing the comparison between different experiments adopting different reference frames. Using an intuitive picture for describing the lepton angular distribution in these processes, we show how the rotational invariance of these quantities can be obtained. This approach can also be used to determine the rotational invariance or non-invariance of various quantities specifying the amount of violation for the Lam-Tung relation. While the violation of the Lam-Tung relation is often expressed by frame-dependent quantities, we note that alternative frame-independent quantities are preferred. (C) 2018 The Authors. Published by Elsevier B.V.

Originele taal-2English
Pagina's (van-tot)356-359
Aantal pagina's4
TijdschriftPhysics Letters B
StatusPublished - 10-feb-2019

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