126 citations · 1.7k across the 55 of their papers we have counts for
5 papers · 1 filter
Connections between collinear and transverse-momentum-dependent polarized observables within the Collins-Soper-Sterman formalism
Leonard Gamberg, Andreas Metz, Daniel Pitonyak +1
We extend the improved Collins-Soper-Sterman (iCSS) construction recently presented in~\cite{Collins:2016hqq} to the case of polarized observables, where we focus in particul…
Small- Asymptotics of the Gluon Helicity Distribution
Yuri V. Kovchegov, Daniel Pitonyak, Matthew D. Sievert
We determine the small- asymptotics of the gluon helicity distribution in a proton at leading order in perturbative QCD at large . To achieve this, we begin by evaluating t…
Twist-3 fragmentation contribution to polarized hyperon production in unpolarized hadronic collisions
Yuji Koike, Andreas Metz, Daniel Pitonyak +2
It has been known for a long time that hyperons produced in hadronic collisions are polarized perpendicular to the production plane of the reaction. This effect cannot be described…
Small- Asymptotics of the Quark Helicity Distribution: Analytic Results
Yuri V. Kovchegov, Daniel Pitonyak, Matthew D. Sievert
In this Letter, we analytically solve the evolution equations for the small- asymptotic behavior of the (flavor singlet) quark helicity distribution in the large- limit. Th…
Phenomenological constraints on in from Lorentz invariance relations
Leonard Gamberg, Zhong-Bo Kang, Daniel Pitonyak +1
We present a new analysis of in within the collinear twist-3 factorization formalism. We incorporate recently derived Lorentz invariance relations int…