Search Results - "Gamberg, Leonard"

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  1. 1

    Transverse Λ polarization in e+e− processes within a TMD factorization approach and the polarizing fragmentation function by D’Alesio, Umberto, Gamberg, Leonard, Murgia, Francesco, Zaccheddu, Marco

    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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    Journal Article
  2. 2

    Transverse Λ polarization in unpolarized pp → jet Λ↑ X by D'Alesio, Umberto, Gamberg, Leonard, Murgia, Francesco, Zaccheddu, Marco

    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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    Journal Article
  3. 3

    Connections between collinear and transverse-momentum-dependent polarized observables within the Collins–Soper–Sterman formalism by Gamberg, Leonard, Metz, Andreas, Pitonyak, Daniel, Prokudin, Alexei

    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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    Journal Article
  4. 4

    Indication on the process dependence of the Sivers effect by Gamberg, Leonard, Kang, Zhong-Bo, Prokudin, Alexei

    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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    Journal Article
  5. 5

    Transverse Λ polarization in e+e− collisions by Gamberg, Leonard, Kang, Zhong-Bo, Shao, Ding Yu, Terry, John, Zhao, Fanyi

    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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    Journal Article
  6. 6

    Process dependent Sivers function and implication for single spin asymmetry in inclusive hadron production by Gamberg, Leonard, Kang, Zhong-Bo

    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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    Journal Article
  7. 7

    Phenomenological constraints on AN in p↑p→πX from Lorentz invariance relations by Gamberg, Leonard, Kang, Zhong-Bo, Pitonyak, Daniel, Prokudin, Alexei

    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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    Journal Article
  8. 8

    Quasi-parton distribution functions: A study in the diquark spectator model by Gamberg, Leonard, Kang, Zhong-Bo, Vitev, Ivan, Xing, Hongxi

    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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    Journal Article
  9. 9

    Polarized hyperon production in single-inclusive electron-positron annihilation at next-to-leading order by Gamberg, Leonard, Kang, Zhong-Bo, Pitonyak, Daniel, Schlegel, Marc, Yoshida, Shinsuke

    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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    Journal Article
  10. 10

    Electron-ion collider impact study on the tensor charge of the nucleon by Gamberg, Leonard, Kang, Zhong-Bo, Pitonyak, Daniel, Prokudin, Alexei, Sato, Nobuo, Seidl, Ralf

    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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    Journal Article
  11. 11

    Limits of TMD evolution in SIDIS at moderate Q by Gamberg, Leonard

    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
  12. 12

    Testing the process dependence of the Sivers function via hadron distributions inside a jet by DʼAlesio, Umberto, Gamberg, Leonard, Kang, Zhong-Bo, Murgia, Francesco, Pisano, Cristian

    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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    Journal Article
  13. 13

    “T-odd effects” in unpolarized Drell–Yan scattering by Gamberg, Leonard P., Goldstein, Gary R.

    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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    Journal Article
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    Final state interactions and the transverse structure of the pion using non-perturbative eikonal methods by Gamberg, Leonard, Schlegel, Marc

    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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    Journal Article
  16. 16

    Chiral-odd fragmentation functions in single pion inclusive electroproduction by Gamberg, Leonard P., Hwang, Dae Sung, Oganessyan, Karo A.

    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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    Journal Article
  17. 17

    Collins fragmentation function for pions and kaons in a spectator model by Bacchetta, Alessandro, Gamberg, Leonard P., Goldstein, Gary R., Mukherjee, Asmita

    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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    Journal Article
  18. 18

    Single transverse spin asymmetry of prompt photon production by Gamberg, Leonard, Kang, Zhong-Bo

    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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