Transverse extension of partons in the proton probed in the sea-quark range by measuring the DVCS cross section

Akhunzyanov, R.; Alexeev, M.; Alexeev, G. D.; Amoroso, A.; Andrieux, V.; Анфимов, Н.; Аносов, В.; Antoshkin, A.; Augsten, K.; Augustyniak, W.; Austregesilo, A.; Azevedo, C.D.R.; Badełek, B.; Balestra, F.; Ball, M.; Barth, J.; Beck, R.; Bedfer, Y.; Bernhard, J.; Bicker, K.; Bielert, E.R.; Birsa, R.; Bodlak, M.; Bordalo, P.; Bradamante, F.; Bressan, A.; Büchele, M.; Burtin, E.; Burtsev, V.E.; Chang, W. C.; Chatterjee, C.; Chiosso, M.; Choi, I. J.; Chumakov, A.G.; Chung, S. U.; Cicuttin, A.; Crespo, M.L.; Torre, S. Dalla; Dasgupta, S.; Денисов, О.; Dhara, L.; Donskov, S.V.; Doshita, N.; Dreisbach, Ch.; Dünnweber, W.; Dusaev, R. R.; Dziewiecki, M.; Ефремов, А. В.; Eversheim, P.D.; Faessler, M.; Ferrero, A.; Finger, M.; Fischer, H.; Franco, C.; Hohenesche, N. du Fresne von; Jm, Friedrich; Frolov, V. V.; Fuchey, E.; Gautheron, F.; Gavrichtchouk, O.P.; Gerassimov, S.; Giarra, J.; Gnesi, I.; Gorzellik, M.; Grasso, A.; Gridin, A.; Perdekamp, M. Grosse; Grube, B.; Grussenmeyer, T.; Guskov, A.; Hahne, D.; Hamar, G.; Harrach, D. von; Heitz, R.; Herrmann, F.; Horikawa, N.; d’Hose, N.; Hsieh, C.-Y.; Huber, S.; Ishimoto, S.; Иванов, А.; Ivanshin, Yu.; Iwata, T.; Jarý, V.; Joosten, R.; Jörg, P.; Juraskova, K.; Kabuß, E.; Kerbizi, A.; Ketzer, B.; Khaustov, G.V.; Khokhlov, Yu.A.; Kisselev, Yu.; Клейн, Ф.; Koivuniemi, J.H.; Kolosov, V.N.; Kondo, K.; Konorov, I.; Константинов, В.Ф.; Kotzinian, A.M.; Kouznetsov, O.; Král, Zdeněk; Krämer, M.; Krinner, F.; Kroumchtein, Z.V.; Kulinich, Y. P.; Kunne, F.; Kurek, K.; Kurjata, R.; Kuznetsov, Ivan; Kveton, A.; Lednev, A.A.; Levchenko, E.A.; Levillain, M.; Levorato, S.; Lian, Y.-S.; Lichtenstadt, J.; Longo, Riccardo; Lyubovitskij, Valery E.; Maggiora, A.; Magnon, A.; Makins, N.; Makke, N.; Mallot, G.K.; Mamon, S.A.; Mariański, B.; Martin, A.; Marzec, J.; Matoušek, Jan; Matsuda, Hiroki; Matsuda, T.; Meshcheryakov, G.; Meyer, M.; Meyer, W.; Mikhailov, Yu.V.; Mikhasenko, M.; Mitrofanov, E.; Mitrofanov, N.; Miyachi, Y.; Moretti, A.; Nagaytsev, A.; Nerling, F.; Neyret, D.; Nový, J.; Nowak, W.-D.; Nukazuka, G.; Nunes, A. S.; Оlshevsky, А.G.; Орлов, И.; Ostrick, M.; Panzieri, D.; Parsamyan, B.; Paul, S.; Peng, J.-C.; Pereira, F.; Pešek, M.; Pešková, M.; Peshekhonov, D.V.; Pierre, N.; Platchkov, S.; Pochodzalla, J.; Polyakov, V.A.; Pretz, J.; Quaresma, M.; Quintans, C.; Ramos, S.; Regali, C.; Reicherz, G.; Riedl, C.; Rogacheva, N.S.; Ryabchikov, D.I.; Рыбников, А.; Rychter, A.; Salac, R.; Samoylenko, V.D.; Sandacz, A.; Santos, C.; Sarkar, S.; Savin, I.; Sawada, T.; Sbrizzai, G.; Schiavon, P.; Schmieden, H.; Schönning, K.; Seder, E.; Selyunin, A.; Silva, L.; Sinha, L.; Sirtl, S.; Slunečka, M.; Smolík, J.; Srnka, A.; Steffen, D.; Stolarski, M.; Subrt, O.; Šulc, M.; Suzuki, Hiromasa; Szabelski, A.; Szameitat, T.; Sznajder, P.; Taševský, M.; Tessaro, S.; Tessarotto, F.; Thiel, A.; Tomsa, J.; Tosello, F.; Tskhay, V.; Uhl, S.; Vasilishin, B. I.; Vauth, A.; Veit, B.M.; Veloso, J.F.C.A.; Vidon, A.; Virius, M.; Wallner, S.; Wilfert, M.; Wolbeek, J. ter; Заремба, К.; Závada, P.; Zavertyaev, M.; Zemlyanichkina, E.; Zhuravlev, N.; Ziembicki, M.

doi:10.1016/j.physletb.2019.04.038

Cited by 38 publications

(23 citation statements)

References 29 publications

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“…Experimental efforts using these processes have been made at various facilities, including HERMES at DESY 123 , JLab 6 GeV (REF. 124 ) and COMPASS at CERN 125 .…”

Section: Experimental Progress and The Eicmentioning

confidence: 99%

What we know and what we don’t know about the proton spin after 30 years

Yuan

Zhao

2020

Nat Rev Phys

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“…Experimental efforts using these processes have been made at various facilities, including HERMES at DESY 123 , JLab 6 GeV (REF. 124 ) and COMPASS at CERN 125 .…”

Section: Experimental Progress and The Eicmentioning

confidence: 99%

What we know and what we don’t know about the proton spin after 30 years

Yuan

Zhao

2020

Nat Rev Phys

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“…Another example is provided by DVCS which is an important part of the physics program at the JLAB 12 GeV upgrade [4], is measured also at CERN by COMPASS [5], and in the future will be studied at the EIC [6,7]. This reaction is the primary source of information on the generalized parton distributions (GPDs) of the nucleon (and, eventually, nuclei) which describe the correlation between parton's longitudinal momentum and its position in the transverse plane.…”

mentioning

confidence: 99%

Axial-vector contributions in two-photon reactions: Pion transition form factor and deeply-virtual Compton scattering at NNLO in QCD

et al. 2021

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Using the approach based on conformal symmetry we calculate the two-loop coefficient function for the axial-vector contributions to two-photon processes in the MS scheme. This is the last missing element for the complete next-to-next-to-leading order (NNLO) calculation of the the pion transition form factor γ * γ → π in perturbative QCD. The corresponding high-statistics measurement is planned by the Belle II collaboration and will allow one to put strong constraints on the pion light-cone distribution amplitude. The calculated NNLO corrections prove to be rather large and have to be taken into account. The same coefficient function determines the contribution of the axial-vector generalized parton distributions to deeply-virtual Compton scattering (DVCS) which is investigated at the JLAB 12 GeV accelerator, by COMPASS at CERN, and in the future will be studied at the Electron Ion Collider EIC.

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“…The analysis was carried out on the small fraction of data collected with liquid hydrogen target and is a continuation of analysis published in Ref. [36]. Similar to COMPASS, CLAS12 also presented preliminary results obtained only with a small fraction of projected data.…”

Section: Pos(dis2019)284mentioning

confidence: 95%