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In the factorized picture of semi-inclusive deep inelastic scattering the naive time reversal-odd parton distributions exist by virtue of the gauge link which is intrinsic to their definition. The link structure describes…

High Energy Physics - Phenomenology · Physics 2009-12-31 Leonard Gamberg , Marc Schlegel

The non-vanishing of naive T-odd parton distributions function can be explained by the existence of the gauge link which emerges from the factorized description of the deep inelastic scattering cross section into perturbatively calculable…

High Energy Physics - Phenomenology · Physics 2015-05-20 Leonard Gamberg , Marc Schlegel

Parton distributions contain factorizable final state interaction effects originating from the fast-moving struck quark interacting with the target spectators in deeply inelastic scattering. We show that these interactions give rise to…

High Energy Physics - Phenomenology · Physics 2010-04-05 A. V. Belitsky , X. Ji , F. Yuan

We apply the MIT bag model to study the Boer-Mulders function of the pion, a $T$-odd function that describes the transverse polarization distribution of the quark inside the pion. We simulate the effect of the gauge link through the…

High Energy Physics - Phenomenology · Physics 2015-06-12 Zhun Lu , Bo-Qiang Ma , Jiacai Zhu

Results for the naive-time-reversal-odd quark distributions in a light-cone quark model are presented. The final-state interaction effects are generated via single-gluon exchange mechanism. The formalism of light-cone wave functions is used…

High Energy Physics - Phenomenology · Physics 2014-11-20 B. Pasquini , F. Yuan

It has been suggested that under certain approximations the Sivers effect can be described in terms of factorization of final state interactions and a spatial distortion of impact parameter space parton distribution; that is a convolution…

High Energy Physics - Phenomenology · Physics 2010-01-15 Leonard Gamberg , Marc Schlegel

We predict the twist-2 Transverse Momentum Dependent parton distribution functions (TMDs) of the pion, namely the unpolarized quark TMD, $f_{1}(x, k_\perp)$, and the transversely polarized quark TMD, also known as the Boer-Mulders function,…

High Energy Physics - Phenomenology · Physics 2019-09-09 Mohammad Ahmady , Chandan Mondal , Ruben Sandapen

An overview is given of the study of final state interactions in hadronically decaying W pairs produced in e^+e^--collisions as it is performed by the four LEP experiments. Bose-Einstein correlations are investigated by comparing like- with…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Dierckxsens

A symmetry preserving treatment of a vector $\otimes$ vector contact interaction (SCI) is used as the basis for calculations of the two pion transverse momentum dependent parton distribution functions (TMDs); namely, that for unpolarised…

High Energy Physics - Phenomenology · Physics 2024-09-24 Dan-Dan Cheng , Zhu-Fang Cui , Minghui Ding , Craig D. Roberts , Sebastian M. Schmidt

Using the light-front holographic model, we study the transverse momentum dependent parton distributions (TMDs) for the case of pion. At leading twist, the unpolarized parton distribution function $ f_{1\pi}(x,\bfk^{2}) $ and the…

High Energy Physics - Phenomenology · Physics 2019-08-26 Navdeep Kaur , Harleen Dahiya

A gauge-invariant formalism is presented for the practical treatment of photo- and electroproduction of pseudoscalar mesons off nucleons that allows an explicit incorporation of hadronic final-state interactions. The semi-phenomenological…

Nuclear Theory · Physics 2007-05-23 H. Haberzettl , K. Nakayama , S. Krewald

Final state radiation in the process $e^+e^-\to\pi^+\pi^-$ is considered for the cuts used in the analysis of KLOE data at large angles. By means of a Monte Carlo event generator FEVA, effects of non-pointlike behaviour of pions are…

High Energy Physics - Phenomenology · Physics 2008-11-26 G. Pancheri , O. Shekhovtsova , G. Venanzoni

The final-state interaction effects on the inclusive two-particle production in electron-positron annihilation are investigated within the context of the one-photon annihilation approximation. Such effects are characterized by one structure…

High Energy Physics - Phenomenology · Physics 2008-11-26 Jian-Jun Yang , Wei Lu

We study the particle production in the early stage of the ultrarelativistic heavy-ion collisions. To this end the Boltzmann kinetic equations for gluons and pions with elastic rescattering are considered together with a simple model for…

High Energy Physics - Phenomenology · Physics 2019-03-12 Elizaveta Nazarova , Łukasz Juchnowski , David Blaschke , Tobias Fischer

A comprehensive model, called ECOMB, is proposed to describe multiparticle production by soft interaction. It incorporates the eikonal formalism, parton model, color mutation, branching and recombination. The physics is conceptually…

High Energy Physics - Phenomenology · Physics 2009-10-31 Zhen Cao , Rudolph C. Hwa

The corrections for two pion correlations due to electromagnetic final state interactions at high secondary multiplicities are investigated. It is shown that these result in a noticeable deviation from the standard Gamov factor. This…

High Energy Physics - Phenomenology · Physics 2008-02-03 D. V. Anchishkin , W. A. Zajc , G. M. Zinovjev

Distribution functions in hard processes can be described by quark-quark correlators, nonlocal matrix elements of quark fields. Color gauge invariance requires inclusion of appropriate gauge links in these correlators. For transverse…

High Energy Physics - Phenomenology · Physics 2009-11-10 C. J. Bomhof , P. J. Mulders , F. Pijlman

This paper applies the analytic forms of a recent non-perturbative, manifestly gauge- and Lorentz-invariant description (of the exchange of all possible virtual gluons between quarks ($Q$) and/or anti-quarks ($\bar{Q}$) in a quenched,…

High Energy Physics - Phenomenology · Physics 2011-04-26 H. M. Fried , Y. Gabellini , T. Grandou , Y. -M. Sheu

The model is presented to describe the f_2(1270) meson photoproduction as a result of pion-pion interactions in the final state. Treating tensor mesons as objects dynamically created due to final state interactions is a convenient and…

High Energy Physics - Phenomenology · Physics 2013-06-21 Lukasz Bibrzycki , Robert Kaminski

We revisit the connection between generalized parton distributions in impact parameter space and T-odd effects in single spin asymmetries of the semi-inclusive deep inelastic process. We show that nontrivial relations can be established…

High Energy Physics - Phenomenology · Physics 2019-10-02 B. Pasquini , S. Rodini , A. Bacchetta
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