Deep Exclusive Electroproduction of 
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 at High 
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 in the Quark Valence Regime

Dlamini, M.; Karki, B.; Ali, S.; Lin, P-J.; Georges, Frédéric; Ko, H.-S.; Israel, N.; Rashad, M. N. H.; Stefanko, A.; Adikaram, D.; Ahmed, Z.; Al-Bataineh, H.; Aljawrneh, B.; Allada, K.; Allison, S.; Alsalmi, S.; Androić, D.; Aniol, K.; Annand, J. R. M.; Atac, H.; Averett, T.; Gayoso, C. Ayerbe; Bai, X.; Bane, J.; Barcus, S.; Bartlett, K.; Bellini, Vincenzo; Beminiwattha, R.; Beričič, J.; Biswas, D.; Brash, E. J.; Bulumulla, D.; Campbell, J.; Camsonne, A.; Carmignotto, M.; Castellano, Joseph A.; Chen, C.; Chen, J-P.; Chetry, T.; Christy, M. E.; Cisbani, E.; Clary, B. A.; Cohen, E.R.; Compton, N.; Cornejo, J. C.; Dusa, S. Covrig; Crowe, B. J.; Danagoulian, S.; Danley, T. W.; Persio, F. De; Deconinck, W.; Defurne, M.; Desnault, C.; Di, D.; Duer, M.; Duran, B.; Ent, R.; Fanelli, C.; Franklin, G.; Fuchey, E.; Gal, C.; Gaskell, D.; Gautam, T.; Glamazdin, O.; Gnanvo, K.; Gray, V. M.; Gu, C.; Hague, T.; Hamad, G.; Hamilton, D.; Hamilton, K.; Hansen, J. O.; Hauenstein, F.; Henry, W.; Higinbotham, D. W.; Holmstrom, T.; Horn, T.; Huang, Yanping; Huber, G. M.; Hyde, C.; Ibrahim, H.; Jen, C. M.; Jin, Kai; Jones, M.; Kabir, A.; Keppel, C.; Khachatryan, V.; King, Paul M.; Li, S.; Li, W.; Liu, J.; Liu, H.; Liyanage, A.; Magee, J. A.; Malace, S.; Mammei, J.; Markowitz, P.; McClellan, Elizabeth; Meddi, F.; Meekins, D.; Mesik, K.; Michaels, R.; Mkrtchyan, A.; Montgomery, R. A.; Camacho, C. Muñoz; Myers, L. S.; Nadel-Turoński, P.; Nazeer, S. J.; Nelyubin, V.; Nguyen, D.; Nuruzzaman, N.; Nycz, M.; Obretch, O. F.; Ou, Li; Palatchi, C.; Pandey, B.; Park, S.; Park, K.; Peng, C.; Pomatsalyuk, R.; Pooser, E.; Puckett, A. J. R.; Punjabi, V.; Quinn, B.; Rahman, Sakib; Reimer, P.; Roche, J.; Sapkota, I.; Sarty, A. J.; Sawatzky, B.; Saylor, N. Hirlinger; Schmookler, Barak; Shabestari, M.; Shahinyan, A.; Širca, S.; Smith, G. R.; Sooriyaarachchilage, S.; Sparveris, N.; Spies, R.; Su, T.; Subedi, A.; Sulkosky, V.; Sun, A.; Thorne, L. A.; Tian, Ye; Ton, N.; Tortorici, F.; Trotta, R.; Urciuoli, G. M.; Voutier, E.; Waidyawansa, B.; Wang, Y.; Wojtsekhowski, B.; Wood, S. A.; Yan, Xiao-Bo; Ye, L.; Ye, Z.; Yero, C.; Zhang, J.; Zhao, Y. X.; Zhu, P.

doi:10.1103/physrevlett.127.152301

Cited by 11 publications

(8 citation statements)

References 32 publications

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“…[30,31] indeed revealed a growth of the nuclear transparency ratio indicative of an early on-set of the scaling regime [32] for both π and ρ electroproduction. In the π case, this may however look contradictory to the non-dominance of the leading twist pion production amplitude revealed by the small value of the polarization ratio σ L /σ T for this reaction [33,34]. The presence of leading twist and higher twist contributions to the π meson electroproduction amplitude opens the way to a nuclear filtering interpretation.…”

Section: The Gpd Domain : Near Forward Exclusive Electroproduction An...mentioning

confidence: 88%

The Status and Future of Color Transparency and Nuclear Filtering

Jain¹,

Pire²,

Ralston³

2022

Preprint

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40 years after its introduction, the phenomenon of color transparency remains a domain of controversial interpretations of experimental data. We review present evidence for or against its manifestation in various exclusive hard scattering reactions. The nuclear transparency experiments reveal whether short distance processes dominate a scattering amplitude at some given kinematical point. We plead for a new round of nuclear transparency measurements in a variety of experimental set-ups, including near-forward exclusive reactions related to generalized parton distribution (GPD) physics and near-backward exclusive reactions related to transition distribution amplitudes (TDA) physics.

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Section: The Gpd Domain : Near Forward Exclusive Electroproduction An...mentioning

confidence: 88%

The Status and Future of Color Transparency and Nuclear Filtering

Jain¹,

Pire²,

Ralston³

2022

Preprint

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“…The total systematic uncertainty of the DVCS cross-section measurements includes the uncertainty on the electron detection and acceptance, the luminosity evaluation, the uncertainty on the photon detection, and the exclusivity. Radiative corrections are included in the analysis based on calculations of [27] and using the procedure described in detail in [21].…”

mentioning

confidence: 99%

“…This letter reports the results of experiment E12-06-114, which ran in Hall A at Jefferson Lab in the fall of 2014 and in 2016. Concurrent data on ep → epπ 0 were published in [21], which also includes additional experimental and analysis details. Table I shows the nine kinematic settings in Q 2 and x B at which the DVCS cross sections were measured.…”

mentioning

confidence: 99%

“…The level-2 trigger was based on a field-programmable gate array (FPGA) module, and was used only during high counting rate settings (> 1 kHz). For settings with low rates, all level-1 triggers were validated and waveforms digitized [21]. Offline analysis of the calorimeter signals and regular energy calibrations resulted in an energy resolution of 3% at 7 GeV.…”

mentioning

confidence: 99%

“…Effects on the spectrometer ac- ceptance were taken into account for each kinematic setting and run-period by applying similar multidimensional cuts (R-cuts, [26]) on both the experimental and simulated data. DIS data were taken simultaneously to the main DVCS data using an ancillary trigger for all kinematic settings, which allowed a monitor of the scattered electron detection efficiency and acceptance [21]. The total systematic uncertainty of the DVCS cross-section measurements includes the uncertainty on the electron detection and acceptance, the luminosity evaluation, the uncertainty on the photon detection, and the exclusivity.…”

mentioning

confidence: 99%

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Deeply virtual Compton scattering cross section at high Bjorken $x_B$

Georges,

Rashad,

Stefanko

et al. 2022

Preprint

Self Cite

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We report high-precision measurements of the Deeply Virtual Compton Scattering (DVCS) cross section at high values of the Bjorken variable xB. DVCS is sensitive to the Generalized Parton Distributions of the nucleon, which provide a three-dimensional description of its internal constituents.Using the exact analytic expression of the DVCS cross section for all possible polarization states of the initial and final electron and nucleon, and final state photon, we present the first experimental extraction of all four helicity-conserving Compton Form Factors (CFFs) of the nucleon as a function of xB, while systematically including helicity flip amplitudes. In particular, the high accuracy of the present data demonstrates sensitivity to some very poorly known CFFs.

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An Introductory Lecture on Generalised Parton Distributions

Mezrag

2022

Few-Body Syst

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Deep Exclusive Electroproduction of π0 at High Q2 in the Quark Valence Regime

Cited by 11 publications

References 32 publications

The Status and Future of Color Transparency and Nuclear Filtering

The Status and Future of Color Transparency and Nuclear Filtering

Deeply virtual Compton scattering cross section at high Bjorken $x_B$

An Introductory Lecture on Generalised Parton Distributions

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