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We study the transverse single-spin asymmetry (TSSA) in $p^{\uparrow}p \to J/\psi X$ reaction, incorporating both transverse-momentum and spin effects. To predict production cross section of prompt $J/\psi$ we use two different approaches,…

High Energy Physics - Phenomenology · Physics 2021-07-14 Anton Karpishkov , Maxim Nefedov , Vladimir Saleev

We consider the transverse single-spin asymmetry (SSA) for $J/\psi$ production in $p^\uparrow p \to J/\psi + X$ within a TMD approach in non-relativistic QCD. Extending a previous study [1], we employ here the color-gauge invariant…

High Energy Physics - Phenomenology · Physics 2020-11-18 Umberto D'Alesio , Luca Maxia , Francesco Murgia , Cristian Pisano , Sangem Rajesh

We present a study of transverse single-spin asymmetries (SSAs) in $p^\uparrow p\to J/\psi\,X$ and $p^\uparrow p\to D X$ within the framework of the generalized parton model (GPM), which includes both spin and transverse momentum effects,…

High Energy Physics - Phenomenology · Physics 2017-09-06 Umberto D'Alesio , Francesco Murgia , Cristian Pisano , Pieter Taels

We present estimates of transverse single spin asymmetry (TSSA) in $p+p^\uparrow \rightarrow J/\psi+X$ within the colour evaporation model of charmonium production in a generalized parton model (GPM) framework, using the recently obtained…

High Energy Physics - Phenomenology · Physics 2017-12-27 Rohini M. Godbole , Abhiram Kaushik , Anuradha Misra , Vaibhav Rawoot , Bipin Sonawane

We estimate transverse spin single spin asymmetry(TSSA) in the process $e+p^\uparrow \to J/\psi +X$ using color evaporation model of charmonium production. We take into account transverse momentum dependent(TMD) evolution of Sivers function…

High Energy Physics - Phenomenology · Physics 2015-06-17 Rohini M. Godbole , Anuradha Misra , Asmita Mukherjee , Vaibhav S. Rawoot

We present expected values of the Single Spin Asymmetry (SSA) in $D$-meson production in the process $p+p^\uparrow \rightarrow D^0 + X $ at RHIC energy $(\sqrt{s}=200\text{ GeV})$ using a generalized parton model approach. We use fits to…

High Energy Physics - Phenomenology · Physics 2016-12-28 Rohini M. Godbole , Abhiram Kaushik , Anuradha Misra

We discuss the single transverse-spin asymmetry (SSA) to be observed in the $D$-meson production with large transverse-momentum in semi-inclusive DIS (SIDIS), $e p^\uparrow \rightarrow e D X$. This contribution is embodied as a twist-3…

High Energy Physics - Phenomenology · Physics 2011-07-19 Hiroo Beppu , Yuji Koike , Kazuhiro Tanaka , Shinsuke Yoshida

We estimate transverse single spin asymmetry (TSSA) in electroproduction of $J/\psi$ for J-Lab and EIC energies. We present estimates of TSSAs in $J/\psi$ production within generalized parton model (GPM) using recent parametrizations of…

High Energy Physics - Phenomenology · Physics 2018-04-18 Bipin Sonawane , Anuradha Misra , Siddhesh Padval , Vaibhav Rawoot

We extend our analysis of transverse single spin asymmetry (SSA) in electroproduction of $J/\psi$ to include the effect of the scale evolution of the transverse momentum dependent (TMD) parton distribution functions and gluon Sivers…

High Energy Physics - Phenomenology · Physics 2013-07-30 Rohini M. Godbole , Anuradha Misra , Asmita Mukherjee , Vaibhav S. Rawoot

We discuss the single transverse-spin asymmetry (SSA) to be observed in the $D$-meson production with large transverse-momentum in semi-inclusive deep inelastic scattering, $e p^\uparrow \rightarrow e D X$. This contribution is embodied as…

High Energy Physics - Phenomenology · Physics 2013-05-30 Hiroo Beppu , Yuji Koike , Kazuhiro Tanaka , Shinsuke Yoshida

We study the transverse single-spin asymmetries for $p^\uparrow p\to \pi\, X$ and $p^\uparrow p\to \gamma\, X$ within the so-called color gauge invariant generalized parton model (CGI-GPM) which, in addition to spin and transverse momentum…

High Energy Physics - Phenomenology · Physics 2019-02-27 Umberto D'Alesio , Carlo Flore , Francesco Murgia , Cristian Pisano , Pieter Taels

We study transverse single spin asymmetries (TSSAs) in back-to-back photon plus jet production in the scattering of unpolarized beams of protons off a transversely polarized proton target as probes of Gluon Sivers Function (GSF). We provide…

High Energy Physics - Phenomenology · Physics 2025-03-17 Deepesh Bhamre , Aman Gupta , Anuradha Misra , Siddhesh Padval

We present estimates of Single Spin Asymmetry(SSA) in the electroproduction of J/{\psi} taking into account the transverse momentum dependent(TMD) evolution of the Sivers function. We estimate SSA for JLab, HERMES, COMPASS and eRHIC…

High Energy Physics - Phenomenology · Physics 2015-01-14 Rohini M. Godbole , Abhiram Kaushik , Anuradha Misra , Vaibhav S. Rawoot

We study the single transverse spin asymmetries in the single inclusive particle production within the framework of the generalized parton model (GPM). By carefully analyzing the initial- and final-state interactions, we include the…

High Energy Physics - Phenomenology · Physics 2011-04-28 Leonard Gamberg , Zhong-Bo Kang

Transverse single-spin asymmetries (SSA) in inclusive reactions are now considered to be directly related to the transverse momentum $k_{T}$ of the fundamental partons involved in the process. Several possible leading-twist QCD mechanisms…

High Energy Physics - Phenomenology · Physics 2009-11-10 Ivan Schmidt , Jacques Soffer

We calculate the transverse single-spin asymmetry (SSA) for $J/\psi$ production in proton-proton collisions, within non-relativistic QCD, employing the transverse momentum dependent, generalized parton model, which includes both spin and…

High Energy Physics - Phenomenology · Physics 2019-10-23 Umberto D'Alesio , Francesco Murgia , Cristian Pisano , Sangem Rajesh

The Sivers transverse single spin asymmetry (TSSA) is calculated and compared at different scales using the TMD evolution equations applied to previously existing extractions. We apply the Collins-Soper-Sterman (CSS) formalism, using the…

High Energy Physics - Phenomenology · Physics 2013-05-30 S. Mert Aybat , Alexei Prokudin , Ted C. Rogers

Transverse single-spin asymmetries (SSA) in inclusive reactions are now considered to be directly related to the transverse momentum ${\bf k}_{T}$ of the fundamental partons involved in the process. We find that the ideal probe to extract…

High Energy Physics - Phenomenology · Physics 2009-11-11 Ivan Schmidt , Jacques Soffer , Jian-Jun Yang

The Sivers effect in polarized SIDIS can be measured in two hadron production as sine modulations involving the azimuthal angles $\varphi_T$ and $\varphi_R$ of both the total and the relative transverse momenta of the hadron pair,…

High Energy Physics - Phenomenology · Physics 2015-06-22 Aram Kotzinian , Hrayr H. Matevosyan , Anthony W. Thomas

We discuss the possibility of using electroproduction of $J/\psi $ as a probe of gluon Sivers function by measuring single spin asymmetry (SSA) in experiments with transversely polarized protons and electron beams. We estimate SSA for JLab,…

High Energy Physics - Phenomenology · Physics 2015-03-19 Rohini M. Godbole , Anuradha Misra , Asmita Mukherjee , Vaibhav S. Rawoot
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