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Transverse Extension of Partons in the Proton probed by Deeply Virtual Compton Scattering

2018-02-08Journal article Open access
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dc.contributor.authorR. Akhunzyanov
dc.contributor.authorM. G. Alexeev
dc.contributor.authorG. D. Alexeev
dc.contributor.authorA. Amoroso
dc.contributor.authorV. Andrieux
dc.contributor.authorN. V. Anfimov
dc.contributor.authorV. Anosov
dc.contributor.authorA. Antoshkin
dc.contributor.authorK. Augsten
dc.contributor.authorW. Augustyniak
dc.contributor.authorA. Austregesilo
dc.contributor.authorC. D. R. Azevedo
dc.contributor.authorB. Badelek
dc.contributor.authorF. Balestra
dc.contributor.authorM. Ball
dc.contributor.authorJ. Barth
dc.contributor.authorR. Beck
dc.contributor.authorY. Bedfer
dc.contributor.authorJ. Bernhard
dc.contributor.authorK. Bicker
dc.contributor.authorE. R. Bielert
dc.contributor.authorR. Birsa
dc.contributor.authorM. Bodlak
dc.contributor.authorP. Bordalo
dc.contributor.authorF. Bradamante
dc.contributor.authorA. Bressan
dc.contributor.authorM. Buechele
dc.contributor.authorE. Burtin
dc.contributor.authorV. E. Burtsev
dc.contributor.authorW. -C. Chang
dc.contributor.authorC. Chatterjee
dc.contributor.authorM. Chiosso
dc.contributor.authorI. Choi
dc.contributor.authorA. G. Chumakov
dc.contributor.authorS. -U. Chung
dc.contributor.authorA. Cicuttin
dc.contributor.authorM. L. Crespo
dc.contributor.authorS. Dalla Torre
dc.contributor.authorS. S. Dasgupta
dc.contributor.authorS. Dasgupta
dc.contributor.authorO. Yu. Denisov
dc.contributor.authorL. Dhara
dc.contributor.authorS. V. Donskov
dc.contributor.authorN. Doshita
dc.contributor.authorCh. Dreisbach
dc.contributor.authorW. Duennweber
dc.contributor.authorR. R. Dusaev
dc.contributor.authorM. Dziewiecki
dc.contributor.authorA. Efremov
dc.contributor.authorP. D. Eversheim
dc.contributor.authorM. Faessler
dc.contributor.authorA. Ferrero
dc.contributor.authorM. Finger
dc.contributor.authorM. Finger jr.
dc.contributor.authorH. Fischer
dc.contributor.authorC. Franco
dc.contributor.authorN. du Fresne von Hohenesche
dc.contributor.authorJ. M. Friedrich
dc.contributor.authorV. Frolov
dc.contributor.authorE. Fuchey
dc.contributor.authorF. Gautheron
dc.contributor.authorO. P. Gavrichtchouk
dc.contributor.authorS. Gerassimov
dc.contributor.authorJ. Giarra
dc.contributor.authorI. Gnesi
dc.contributor.authorM. Gorzellik
dc.contributor.authorA. Grasso
dc.contributor.authorA. Gridin
dc.contributor.authorM. Grosse Perdekamp
dc.contributor.authorB. Grube
dc.contributor.authorT. Grussenmeyer
dc.contributor.authorA. Guskov
dc.contributor.authorD. Hahne
dc.contributor.authorG. Hamar
dc.contributor.authorD. von Harrach
dc.contributor.authorR. Heitz
dc.contributor.authorF. Herrmann
dc.contributor.authorN. Horikawa
dc.contributor.authorN. d'Hose
dc.contributor.authorC. -Y. Hsieh
dc.contributor.authorS. Huber
dc.contributor.authorS. Ishimoto
dc.contributor.authorA. Ivanov
dc.contributor.authorYu. Ivanshin
dc.contributor.authorT. Iwata
dc.contributor.authorV. Jary
dc.contributor.authorR. Joosten
dc.contributor.authorP. Joerg
dc.contributor.authorK. Juraskova
dc.contributor.authorE. Kabuss
dc.contributor.authorA. Kerbizi
dc.contributor.authorB. Ketzer
dc.contributor.authorG. V. Khaustov
dc.contributor.authorYu. A. Khokhlov
dc.contributor.authorYu. Kisselev
dc.contributor.authorF. Klein
dc.contributor.authorJ. H. Koivuniemi
dc.contributor.authorV. N. Kolosov
dc.contributor.authorK. Kondo
dc.contributor.authorI. Konorov
dc.contributor.authorV. F. Konstantinov
dc.contributor.authorA. M. Kotzinian
dc.contributor.authorO. M. Kouznetsov
dc.contributor.authorZ. Kral
dc.contributor.authorM. Kraemer
dc.contributor.authorF. Krinner
dc.contributor.authorZ. V. Kroumchtein
dc.contributor.authorY. Kulinich
dc.contributor.authorF. Kunne
dc.contributor.authorK. Kurek
dc.contributor.authorR. P. Kurjata
dc.contributor.authorI. I. Kuznetsov
dc.contributor.authorA. Kveton
dc.contributor.authorA. A. Lednev
dc.contributor.authorE. A. Levchenko
dc.contributor.authorM. Levillain
dc.contributor.authorS. Levorato
dc.contributor.authorY. -S. Lian
dc.contributor.authorJ. Lichtenstadt
dc.contributor.authorR. Longo
dc.contributor.authorV. E. Lyubovitskij
dc.contributor.authorA. Maggiora
dc.contributor.authorA. Magnon
dc.contributor.authorN. Makins
dc.contributor.authorN. Makke
dc.contributor.authorG. K. Mallot
dc.contributor.authorS. A. Mamon
dc.contributor.authorC. Marchand
dc.contributor.authorB. Marianski
dc.contributor.authorA. Martin
dc.contributor.authorJ. Marzec
dc.contributor.authorJ. Matousek
dc.contributor.authorH. Matsuda
dc.contributor.authorT. Matsuda
dc.contributor.authorG. V. Meshcheryakov
dc.contributor.authorM. Meyer
dc.contributor.authorW. Meyer
dc.contributor.authorYu. V. Mikhailov
dc.contributor.authorM. Mikhasenko
dc.contributor.authorE. Mitrofanov
dc.contributor.authorN. Mitrofanov
dc.contributor.authorY. Miyachi
dc.contributor.authorA. Moretti
dc.contributor.authorA. Nagaytsev
dc.contributor.authorF. Nerling
dc.contributor.authorD. Neyret
dc.contributor.authorJ. Novy
dc.contributor.authorW. -D. Nowak
dc.contributor.authorG. Nukazuka
dc.contributor.authorA. S. Nunes
dc.contributor.authorA. G. Olshevsky
dc.contributor.authorI. Orlov
dc.contributor.authorM. Ostrick
dc.contributor.authorD. Panzieri
dc.contributor.authorB. Parsamyan
dc.contributor.authorS. Paul
dc.contributor.authorJ. -C. Peng
dc.contributor.authorF. Pereira
dc.contributor.authorG. Pesaro
dc.contributor.authorM. Pesek
dc.contributor.authorM. Peskova
dc.contributor.authorD. V. Peshekhonov
dc.contributor.authorN. Pierre
dc.contributor.authorS. Platchkov
dc.contributor.authorJ. Pochodzalla
dc.contributor.authorV. A. Polyakov
dc.contributor.authorJ. Pretz
dc.contributor.authorM. Quaresma
dc.contributor.authorC. Quintans
dc.contributor.authorS. Ramos
dc.contributor.authorC. Regali
dc.contributor.authorG. Reicherz
dc.contributor.authorC. Riedl
dc.contributor.authorN. S. Rogacheva
dc.contributor.authorD. I. Ryabchikov
dc.contributor.authorA. Rybnikov
dc.contributor.authorA. Rychter
dc.contributor.authorR. Salac
dc.contributor.authorV. D. Samoylenko
dc.contributor.authorA. Sandacz
dc.contributor.authorC. Santos
dc.contributor.authorS. Sarkar
dc.contributor.authorI. A. Savin
dc.contributor.authorT. Sawada
dc.contributor.authorG. Sbrizzai
dc.contributor.authorP. Schiavon
dc.contributor.authorH. Schmieden
dc.contributor.authorK. Schoennig
dc.contributor.authorE. Seder
dc.contributor.authorA. Selyunin
dc.contributor.authorL. Silva
dc.contributor.authorL. Sinha
dc.contributor.authorS. Sirtl
dc.contributor.authorM. Slunecka
dc.contributor.authorJ. Smolik
dc.contributor.authorA. Srnka
dc.contributor.authorD. Steffen
dc.contributor.authorM. Stolarski
dc.contributor.authorO. Subrt
dc.contributor.authorM. Sulc
dc.contributor.authorH. Suzuki
dc.contributor.authorA. Szabelski
dc.contributor.authorT. Szameitat
dc.contributor.authorP. Sznajder
dc.contributor.authorM. Tasevsky
dc.contributor.authorS. Tessaro
dc.contributor.authorF. Tessarotto
dc.contributor.authorA. Thiel
dc.contributor.authorJ. Tomsa
dc.contributor.authorF. Tosello
dc.contributor.authorV. Tskhay
dc.contributor.authorS. Uhl
dc.contributor.authorB. I. Vasilishin
dc.contributor.authorA. Vauth
dc.contributor.authorB. M. Veit
dc.contributor.authorJ. Veloso
dc.contributor.authorA. Vidon
dc.contributor.authorM. Virius
dc.contributor.authorS. Wallner
dc.contributor.authorM. Wilfert
dc.contributor.authorJ. ter Wolbeek
dc.contributor.authorK. Zaremba
dc.contributor.authorP. Zavada
dc.contributor.authorM. Zavertyaev
dc.contributor.authorE. Zemlyanichkina
dc.contributor.authorN. Zhuravlev
dc.contributor.authorM. Ziembicki
dc.date.accessioned2020-11-09T18:41:53Z
dc.date.available2020-11-09T18:41:53Z
dc.date.issued2018-02-08
dc.description.abstractWe report on the first measurement of exclusive single-photon muoproduction on the proton by COMPASS using 160 GeV/$c$ polarized $\mu^+$ and $\mu^-$ beams of the CERN SPS impinging on a liquid hydrogen target. We determine the dependence of the average of the measured $\mu^+$ and $\mu^-$ cross sections for deeply virtual Compton scattering on the squared four-momentum transfer $t$ from the initial to the final final proton. The slope $B$ of the $t$-dependence is fitted with a single exponential function, which yields $B=(4.3 \ \pm \ 0.6_{\text{stat}}\_{- \ 0.3}^{+ \ 0.1}\big\rvert_{\text{sys}}) (\text{GeV}/c)^{-2}$. This result can be converted into an average transverse extension of partons in the proton, $\sqrt{\langle r_{\perp}^2 \rangle} = (0.58 \ \pm \ 0.04_{\text{stat}}\_{- \ 0.02}^{+ \ 0.01}\big\rvert_{\text{sys}})\text{fm}$. For this measurement, the average virtuality of the photon mediating the interaction is $\langle Q^2 \rangle = 1.8\,(\text{GeV/}c)^2$ and the average value of the Bjorken variable is $\langle x_{\text{Bj}} \rangle = 0.056$.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.physletb.2019.04.038pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.26/34017
dc.language.isoengpt_PT
dc.titleTransverse Extension of Partons in the Proton probed by Deeply Virtual Compton Scatteringpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage194pt_PT
oaire.citation.startPage188pt_PT
oaire.citation.titlePhysics Letters Bpt_PT
oaire.citation.volume793pt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT

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