Search Results - "Gamberg, Leonard"
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Transverse Λ polarization in e+e− processes within a TMD factorization approach and the polarizing fragmentation function
Published in The journal of high energy physics (13-12-2022)“…A bstract We perform a re-analysis of Belle data for the transverse Λ and Λ ¯ polarization in e + e − annihilation processes within a transverse momentum…”
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Transverse Λ polarization in unpolarized pp → jet Λ↑ X
Published in Physics letters. B (01-04-2024)“…In this Letter, we investigate the spontaneous transverse polarization of Λ hyperons produced in unpolarized pp collisions inside a jet, by adopting a TMD…”
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Connections between collinear and transverse-momentum-dependent polarized observables within the Collins–Soper–Sterman formalism
Published in Physics letters. B (01-06-2018)“…We extend the improved Collins–Soper–Sterman (iCSS) W+Y construction recently presented in [1] to the case of polarized observables, where we focus in…”
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Indication on the process dependence of the Sivers effect
Published in Physical review letters (04-06-2013)“…We analyze the spin asymmetry for single inclusive jet production in proton-proton collisions collected by the AnDY experiment at the Relativistic Heavy Ion…”
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Transverse Λ polarization in e+e− collisions
Published in Physics letters. B (10-07-2021)“…In this paper we study transverse polarization of Λ hyperons in single-inclusive leptonic annihilation. We show that when the transverse momentum of the Λ…”
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Process dependent Sivers function and implication for single spin asymmetry in inclusive hadron production
Published in Physics letters. B (24-01-2011)“…We study the single transverse spin asymmetries in the single inclusive particle production within the framework of the generalized parton model (GPM). By…”
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Phenomenological constraints on AN in p↑p→πX from Lorentz invariance relations
Published in Physics letters. B (01-07-2017)“…We present a new analysis of AN in p↑p→πX within the collinear twist-3 factorization formalism. We incorporate recently derived Lorentz invariance relations…”
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Quasi-parton distribution functions: A study in the diquark spectator model
Published in Physics letters. B (09-04-2015)“…A set of quasi-parton distribution functions (quasi-PDFs) have been recently proposed by Ji. Defined as the matrix elements of equal-time spatial correlations,…”
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Polarized hyperon production in single-inclusive electron-positron annihilation at next-to-leading order
Published in The journal of high energy physics (01-01-2019)“…A bstract We study the production of polarized Λ-hyperons in electron-positron annihilation. We are particularly interested in the transverse-spin dependence…”
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Electron-ion collider impact study on the tensor charge of the nucleon
Published in Physics letters. B (10-05-2021)“…In this letter we study the impact of the Electron-Ion Collider (EIC) on the phenomenological extraction of the tensor charge from a QCD global analysis of…”
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Limits of TMD evolution in SIDIS at moderate Q
Published in EPJ Web of Conferences (01-01-2015)“…We investigate semi-inclusive deep inelastic scattering measurements in the region of relatively small Q, where sensitivity to nonperturbative transverse…”
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Journal Article Conference Proceeding -
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Testing the process dependence of the Sivers function via hadron distributions inside a jet
Published in Physics letters. B (25-10-2011)“…We study the process dependence of the Sivers function by considering the impact of color-gauge invariant initial and final state interactions on transverse…”
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“T-odd effects” in unpolarized Drell–Yan scattering
Published in Physics letters. B (12-07-2007)“…We consider the leading twist “T-odd” contributions as the dominant source of the cos2ϕ azimuthal asymmetry in unpolarized pp¯→μ−μ+X di-lepton production in…”
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Single transverse spin asymmetry of prompt photon production
Published in Physics letters. B (01-11-2012)Get full text
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Final state interactions and the transverse structure of the pion using non-perturbative eikonal methods
Published in Physics letters. B (22-02-2010)“…In the factorized picture of semi-inclusive hadronic processes the naive time-reversal odd parton distributions exist by virtue of the gauge link which renders…”
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Chiral-odd fragmentation functions in single pion inclusive electroproduction
Published in Physics letters. B (01-04-2004)“…We consider a sub-leading twist chiral-odd pion fragmentation function and explore its contribution in single pion semi-inclusive electroproduction. We…”
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Collins fragmentation function for pions and kaons in a spectator model
Published in Physics letters. B (17-01-2008)“…We calculate the Collins fragmentation function in the framework of a spectator model with pseudoscalar pion–quark coupling and a Gaussian form factor at the…”
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Single transverse spin asymmetry of prompt photon production
Published in Physics letters. B (15-11-2012)“…We study the single transverse spin asymmetry of prompt photon production in high energy protonaproton scattering. We include the contributions from both the…”
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Journal Article -
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Indication on the Process Dependence of the Sivers Effect
Published in Physical review letters (04-06-2013)Get full text
Journal Article -
20
Process dependent Sivers function and implication for single spin asymmetry in inclusive hadron production
Published in Physics letters. B (01-01-2011)Get full text
Journal Article