Phenomenological constraints on AN in pp → π X from Lorentz invariance relations

Leonard Gamberg, Zhong Bo Kang, Daniel Pitonyak, Alexei Prokudin

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


We present a new analysis of AN in pp→πX within the collinear twist-3 factorization formalism. We incorporate recently derived Lorentz invariance relations into our calculation and focus on input from the kinematical twist-3 functions, which are weighted integrals of transverse momentum dependent (TMD) functions. In particular, we use the latest extractions of the Sivers and Collins functions with TMD evolution to compute certain terms in AN. Consequently, we are able to constrain the remaining contributions from the lesser known dynamical twist-3 correlators.

Original languageEnglish (US)
Pages (from-to)242-251
Number of pages10
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
StatePublished - Jul 10 2017

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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