Exploring the gluon Sivers function in photon + jet production
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arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866910875087011840 |
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| author | Bhamre, Deepesh Gupta, Aman Misra, Anuradha Padval, Siddhesh |
| author_facet | Bhamre, Deepesh Gupta, Aman Misra, Anuradha Padval, Siddhesh |
| contents | 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 estimates within the region where the imbalance $\vec{q}_{\perp} \equiv \vec{p}_{γ\perp} + \vec{p}_{J\perp}$ between the transverse momenta of the photon and the jet is much smaller than the average of the transverse momenta $\vec{p}_{\perp} \equiv \lvert \vec{p}_{γ\perp} - \vec{p}_{J\perp} \rvert / 2$ i.e. the back-to-back region. The presence of these two scales in the process makes it particularly suitable for applying transverse momentum dependent (TMD) factorization, in contrast to single-scale processes that rely on the generalized parton model approach. We present our preliminary results of the transverse single spin asymmetry for this process at $\sqrt{s} $ = 200 GeV. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_10682 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Exploring the gluon Sivers function in photon + jet production Bhamre, Deepesh Gupta, Aman Misra, Anuradha Padval, Siddhesh High Energy Physics - Phenomenology 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 estimates within the region where the imbalance $\vec{q}_{\perp} \equiv \vec{p}_{γ\perp} + \vec{p}_{J\perp}$ between the transverse momenta of the photon and the jet is much smaller than the average of the transverse momenta $\vec{p}_{\perp} \equiv \lvert \vec{p}_{γ\perp} - \vec{p}_{J\perp} \rvert / 2$ i.e. the back-to-back region. The presence of these two scales in the process makes it particularly suitable for applying transverse momentum dependent (TMD) factorization, in contrast to single-scale processes that rely on the generalized parton model approach. We present our preliminary results of the transverse single spin asymmetry for this process at $\sqrt{s} $ = 200 GeV. |
| title | Exploring the gluon Sivers function in photon + jet production |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2503.10682 |