Enlighting the transverse structure of the proton via double parton scattering in photon-induced interactions
| Autor: | Federico Alberto Ceccopieri, Matteo Rinaldi |
|---|---|
| Přispěvatelé: | Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2022 |
| Předmět: |
second keyword
jet: photoproduction Nuclear Theory cross section [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th] third keyword FOS: Physical sciences model: hadronic Nuclear Theory (nucl-th) High Energy Physics - Phenomenology DESY HERA Stor transverse High Energy Physics - Phenomenology (hep-ph) wave function: light cone first keyword photon p: interaction kinematics parton: multiple scattering [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph] High Energy Physics::Experiment luminosity structure Nuclear Experiment photon: wave function photon: virtual |
| Zdroj: | Physical Review D Physical Review |
| ISSN: | 1550-7998 |
| DOI: | 10.1103/physrevd.105.l011501 |
| Popis: | In the present paper we address double parton scattering (DPS) in quasi-real photon-proton interactions. By using electromagnetic and hadronic models of the photon light cone wave functions, we compute the so-called effective cross-section, $\sigma_{eff}^{\gamma p}$ which allows us to calculate the DPS contribution to these processes under dedicated assumptions. In particular, for the four-jet photoproduction in HERA kinematics we found a sizeable DPS contribution. We show that if the photon virtuality $Q^2$ could be measured and thus the dependence of $\sigma_{eff}^{\gamma p}$ on such a parameter exposed, information on the transverse distance between partons active in proton could be extracted. To this aim, we set lower limits on the integrated luminosity needed to observe such an effect which would allow the extraction of novel information on the proton structure. Comment: 10 pages, 4 figures. Accepted version in Physical Review D letters. Added i) more details on the analyses presented ii) supplemental material iii) new calculations of the single parton scattering four jet photo-production cross-section |
| Databáze: | OpenAIRE |
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