Spectator-Tagged Deeply Virtual Compton Scattering on Light Nuclei
Spectator-Tagged Deeply Virtual Compton Scattering on Light Nuclei
The three-dimensional picture of quarks and gluons in the proton is set to be revealed through Deeply virtual Compton scattering while a critically important puzzle in the one-dimensional picture remains, namely, the origins of the EMC effect. Incoherent nuclear DVCS, i.e. DVCS on a nucleon inside a nucleus, can reveal the 3D partonic structure of the bound nucleon and shed a new light on the EMC effect. However, the Fermi motion of the struck nucleon, off-shell effects and final-state interactions (FSIs) complicate this parton level interpretation. We propose here a measurement of incoherent DVCS with a tagging of the recoiling spectator system (nucleus A-1) to systematically control nuclear effects. Through spectator-tagged DVCS, a fully detected final state presents a unique opportunity to systematically study these nuclear effects and cleanly observe possible modification of the nucleon's quark distributions. We propose to measure the DVCS beam-spin asymmetries (BSAs) on $^4$He and deuterium targets. The reaction $^4$He$(e,e^{\prime}\gamma\,p\,^3$H$)$ with a fully detected final state has the rare ability to simultaneously quantify FSIs, measure initial nucleon momentum, and provide a sensitive probe to other nuclear effects at the parton level. The DVCS BSA on a (quasi-free) neutron will be measured by tagging a spectator proton with a deuteron target. Similarly, a bound neutron measurement detects a spectator $^3$He off a $^4$He target. These two observables will allow for a self-contained measurement of the neutron off-forward EMC Effect.
Vadim Guzey、Ian Clo?t、N. Markov、Malek Mazouz、Sebastien Procureur、Li Ye、Nikos Sparveris、William Brooks、Eric Voutier、Simonetta Liuti、Krishna Adhikari、Andrei Kim、Seamus Riordan、Adam Freese、Melanie Rehfuss、Carlos Munoz、Wim Cosyn、Stepan Stepanyan、Jacques Ball、David Jenkins、Silvia Niccolai、John Arrington、Sergio Scopetta、Kawtar Hafidi、Dominique Marchand、Paul Reimer、Mohammad Hattawy、Nathan Baltzell、Lamiaa El Fassi、Kyungseon Joo、Ahmed El-Alaoui、James Dunne、Zein-Eddine Meziani、Michel Guidal、Valery Kubarovsky、Zhihong Ye、Julien Bettane、David Potteveld、Raphael Dupre、Michel Garcon、Whitney Armstrong、Francois-Xavier Girod、Bryan McKinnon、Burcu Duran、Michael Paolone、Sereres Johnston、Frank Cao、Dipangkar Dutta、Sylvester Joosten、Franck Sabatie、Alberto Accardi、Kijun Park、Gabriel Charles、Md Latiful Kabir、Maxime Defurne、Herve Moutarde
Petersburg Nuclear Physics InstituteArgonne National LaboratoryUniversity of ConnecticutFaculte des Sciences de MonastirCEA Centre de SaclayMississippi State UniversityTemple UniversityUniversidad Tecnica Federico Santa MariaUniversite Paris-SaclayUniversity of VirginiaMississippi State UniversityUniversity of ConnecticutArgonne National LaboratoryArgonne National LaboratoryTemple UniversityUniversite Paris-SaclayGhent UniversityJefferson LabCEA Centre de SaclayVirginia TechUniversite Paris-SaclayArgonne National LaboratoryUniversita di PerugiaArgonne National LaboratoryUniversite Paris-SaclayArgonne National LaboratoryArgonne National LaboratoryJefferson LabMississippi State UniversityUniversity of ConnecticutUniversidad Tecnica Federico Santa MariaMississippi State UniversityTemple UniversityUniversite Paris-SaclayJefferson LabArgonne National LaboratoryUniversite Paris-SaclayArgonne National LaboratoryUniversite Paris-SaclayCEA Centre de SaclayArgonne National LaboratoryJefferson LabUniversity of GlasgowTemple UniversityTemple UniversityArgonne National LaboratoryUniversity of ConnecticutMississippi State UniversityTemple UniversityCEA Centre de SaclayHampton UniversityJefferson LabUniversite Paris-SaclayMississippi State UniversityCEA Centre de SaclayCEA Centre de Saclay
物理学粒子探测技术、辐射探测技术、核仪器仪表加速器
Vadim Guzey,Ian Clo?t,N. Markov,Malek Mazouz,Sebastien Procureur,Li Ye,Nikos Sparveris,William Brooks,Eric Voutier,Simonetta Liuti,Krishna Adhikari,Andrei Kim,Seamus Riordan,Adam Freese,Melanie Rehfuss,Carlos Munoz,Wim Cosyn,Stepan Stepanyan,Jacques Ball,David Jenkins,Silvia Niccolai,John Arrington,Sergio Scopetta,Kawtar Hafidi,Dominique Marchand,Paul Reimer,Mohammad Hattawy,Nathan Baltzell,Lamiaa El Fassi,Kyungseon Joo,Ahmed El-Alaoui,James Dunne,Zein-Eddine Meziani,Michel Guidal,Valery Kubarovsky,Zhihong Ye,Julien Bettane,David Potteveld,Raphael Dupre,Michel Garcon,Whitney Armstrong,Francois-Xavier Girod,Bryan McKinnon,Burcu Duran,Michael Paolone,Sereres Johnston,Frank Cao,Dipangkar Dutta,Sylvester Joosten,Franck Sabatie,Alberto Accardi,Kijun Park,Gabriel Charles,Md Latiful Kabir,Maxime Defurne,Herve Moutarde.Spectator-Tagged Deeply Virtual Compton Scattering on Light Nuclei[EB/OL].(2017-08-02)[2025-06-03].https://arxiv.org/abs/1708.00835.点此复制
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