Precision studies of QCD in the low energy domain of the EIC

Burkert, V. D.; Elouadrhiri, L.; Afanasev, Andrei; Arrington, J.; Contalbrigo, M.; Cosyn, Wim; Deshpande, A.; Glazier, D. I.; Ji, Xiangdong; Liuti, Simonetta; Oh, Yongseok; Richards, D. S.; Satogata, T.; Vossen, A.; Abdolmaleki, Hamed; Al-bataineh, A.; Aidala, C.; Alexandrou, Constantia; Avagyan, Harutyun; Bacchetta, Alessandro; Baker, M. D.; Benmokhtar, F.; Bernauer, J. C.; Bissolotti, Chiara; Briscoe, W. J.; Byers, D.; Cao, Xu; Carlson, Carl E.; Cichy, Krzysztof; Cloet, I.C.; Cocuzza, Christopher; Cole, P. L.; Constantinou, Martha; Courtoy, Aurore; Dahiyah, H.; Dehmelt, K.; Diehl, Stefan; Dilks, C.; Djalali, C.; Dupré, R.; Dusa, S. Covrig; El-Bennich, B.; Fassi, L. El; Frederico, T.; Freese, Adam; Gamage, B.R.; Gamberg, Leonard; Ghoshal, R.R.; Girod, F. X.; Gonçalves, V. P.; Gotra, Y.; Guo, F.; Guo, Xingyu; Hattawy, M.; Hatta, Yoshitaka; Hayward, T. B.; Hen, O.; Huber, G. M.; Hyde, C.; Isupov, E. L.; Jacak, B.; Jacobs, W. W.; Jentsch, A.; Ji, Chueng‐Ryong; Joosten, S.; Kalantarians, N.; Kang, Zhong Bo; Kim, A.; Klein, Spencer L.; Kriesten, Brandon; Kumano, S.; Kumar, Ashok; Kumerički, Krešimir; Kuchera, Michelle; Lai, Wai Kin; Li, Jin; Li, Shujie; Li, W.; Li, X.; Lin, H.-W.; Liu, K.F.; Liu, Xiaohui; Markowitz, P.; Mathieu, V.; McEneaney, Matthew; Mekki, A.; Melo, J. P. B. C. de; Meziani, Zein‐Eddine; Milner, R.; Mkrtchyan, H.; Мочалов, В. В.; Mokeev, V.; Morozov, Vasiliy; Moutarde, H.; Murray, M.; Mtingwa, S.; Nadel-Turoński, P.; Okorokov, V.; Onyie, E.; Pappalardo, L. L.; Papandreou, Z.; Pecar, C.; Pilloni, A.; Pire, B.; Polys, N.; Prokudin, Alexei; Przybycień, M.; Qiu, Jian; Radici, Marco; Reed, R.; Ringer, Felix; Roy, B. J.; Sato, Nobuo; Schäfer, Andreas; Schmookler, Barak; Schnell, G.; Schweitzer, P.; Seidl, R.; Semenov-Tian-Shansky, K.; Serna, Fernando E.; Shaban, F.; Shabestari, M.; Shiells, Kyle; Signori, Andrea; Spiesberger, H.; Strakovsky, I. I.; Sufian, Raza Sabbir; Szczepaniak, A.P.; Teodorescu, L.; Terry, John; Teryaev, O. V.; Tessarotto, F.; Timmer, C.; Tawfik, Abdel Nasser; Cazares, L. Valenzuela; Vladimirov, Alexey; Voutier, E.; Watts, D. P.; Wilson, David J.; Winney, D.; Xiao, Bowen; Ye, Z.; Ye, Zh.; Yuan, Feng; Zachariou, N.; Zahed, Ismaïl; Zhang, J.L.; Zhang, Y.; Zhou, Jian

doi:10.1016/j.ppnp.2023.104032

Cited by 40 publications

(6 citation statements)

References 395 publications

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“…In this work, the NTVMP process offer significant information for the study of proton GFFs. Therefore, the highprecision photo/electroproduction data of light and heavy vector mesons (including ρ 0 , ω and φ, J/ψ, Υ) are very needed, which can be realized in the JLab [30] and EICs [31][32][33]. Moreover, this study will offer theoretical reference for the GFFs measurement in the future DVCS experiments and other indirect measurement in exclusive processes.…”

Section: Discussionmentioning

confidence: 99%

Gravitational form factors of the proton from near-threshold vector meson photoproduction

Wang

2023

Preprint

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We embark on a systematical analysis of the quark and gluon gravitational form factors (GFFs) of the proton, by connecting energy-momentum tensor and the near-threshold vector meson photoproduction (NTVMP). Concretely, the quark contributions of GFFs are determined unprecedentedly by global fitting the cross section of the lightest vector meson ρ0 photoproduction. Combined with the gluon GFFs achieved from heavy quarkonium J/ψ photoproduction data, the complete GFFs are obtained and compared with the deeply virtual Compton scattering experimental results and LQCD determinations. The profound implications of this finding cannot be overstated, as it opens new avenues for obtaining comprehensive information on GFFs. Naturally, this work is not only an important basis for delving the proton enigmatic properties, but also have significance theoretical guiding for future JLab and EICs experimental measurements.

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Section: Discussionmentioning

confidence: 99%

Gravitational form factors of the proton from near-threshold vector meson photoproduction

Wang

2023

Preprint

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“…We determine the linear divergence by fitting Z(z) of equation (2) to an exponential decay Be − δ mz . Our calculation from examining the exponential decay of Z(z) yields δm = 0.713 (13) and δm = 0.668 (10) GeV with Z(z) inputs from the RI/MOM renormalization factors and the zero boost-momentum bare pion matrix elements respectively. Our δm parameter are of the same order of magnitude as ANL/BNL's [19] which was δm = 0.7439 (59) GeV at N f = 2 + 1 a = 0.04 fm on 310 MeV ensemble.…”

Section: Renormalization Matrix Elementsmentioning

confidence: 93%

“…The errors in m 0 are derived from scale variation described in section 3.1. Each m 0 is added to the linear divergence δm = 0.668 (10) GeV in the hybrid-ratio scheme for z > z s . Note the greatly reduced errors in m 0 when RGR and LRR are applied simultaneously.…”

Section: Renormalization Matrix Elementsmentioning

confidence: 99%

“…A great deal has been learned about nucleon PDFs from analysis of hard-scattering experiments since the 1960s (for reviews and latest results, see [3][4][5][6][7]), and these measurements have provided a standard against which theoretical calculations can be judged. Still greater experimental precision is anticipated at the future electron-ion collider [8][9][10]. The pion is the lightest hadron and is of special interest due to its interpretation as a pseudo-Nambu-Goldstone boson from the spontaneous breaking of approximate chiral symmetry; hence, an understanding of the pion PDF is of high value.…”

Section: Introductionmentioning

confidence: 99%

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Pion valence quark distribution at physical pion mass of N _f = 2 + 1 + 1 lattice QCD

Holligan,

Lin

2024

J. Phys. G: Nucl. Part. Phys.

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We present a state-of-the-art calculation of the unpolarized pion valence-quark distribution in the framework of large-momentum effective theory (LaMET)with improved handling of systematic errors as well as two-loop perturbative matching. We use lattice ensembles generated by the MILC collaboration at lattice spacing $a\approx 0.09$~fm, lattice volume $64^3\times 96$, $N_f=2+1+1$ flavors of highly-improved staggered quarks and a physical pion mass. The LaMET matrix elements are calculated with pions boosted to momentum $P_z\approx 1.72$~GeV with high-statistics of $O(10^6)$ measurements. We study the pion PDF in both hybrid-ratio and hybrid-regularization-independent momentumsubtraction (hybrid-RI/MOM) schemes and also compare the systematic errors with and without the addition of leading-renormalon resummation (LRR) and renormalization-group resummation (RGR) in both the renormalization and lightcone matching.The final lightcone PDF results are presented in the modified minimal-subtraction scheme at renormalization scale $\mu=2.0$~GeV. We show that the $x$-dependent PDFs are compatible between the hybrid-ratio and hybrid-RI/MOM renormalization with the same improvements. We also show that systematics are greatly reduced by the simultaneous inclusion of RGR and LRR and that these methods are necessary if improved precision is to be reached with higher-order terms in renormalization and matching.

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“…This quantification can be carried out by simultaneous measurement of scattered beam electrons after deep inelastic collision from nucleons along with their SRC paired counterparts ejected in the interaction event. The robust design of the proposed EIC detector [140,141] would allow for the tagged measurement of the outgoing neutrons and protons along with the reaction fragments produced in DIS events.…”

Section: Future Perspectivesmentioning

confidence: 99%

Nucleon-nucleon correlations inside atomic nuclei: synergies, observations and theoretical models

Dalal,

Douglas MacGregor

2024

Rep. Prog. Phys.

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While the main features of atomic nuclei are well described by nuclear mean-field models, there is a large and growing body of evidence which indicates an important additional role played by spatially-correlated nucleon-nucleon structures. The role of nucleonic structures was first suggested by Heidmann in 1950 to explain the pick-up reactions of energetic nucleons. Since then, a steady flux of new experimental evidence has confirmed the presence of similar structures inside atomic nuclei, dominated by correlations between pairs of nucleons. The role of these internal nucleon-nucleon correlations has been established using various energetic probes like photons, pions, leptons and hadrons. These correlated structures are essential for understanding the interaction of particles with nuclei and their presence provides an explanation of many specific nuclear phenomena, including backscattered protons, copious deuteron production, sub-threshold particle production, neutrino interactions with nuclei and the EMC effect. On the theoretical side, these measurements have stimulated a large number of phenomenological models specifically devised to address these enigmatic observations. While reviews exist for specific interactions, there is currently no published commentary which systematically encompasses the wide range of experimental signatures and theoretical frameworks developed thus far. The present review draws together the synergies between a wide range of different experimental and theoretical studies, summarises progress in this area and highlights outstanding issues for further study.

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Precision studies of QCD in the low energy domain of the EIC

Cited by 40 publications

References 395 publications

Gravitational form factors of the proton from near-threshold vector meson photoproduction

Gravitational form factors of the proton from near-threshold vector meson photoproduction

Pion valence quark distribution at physical pion mass of N _f = 2 + 1 + 1 lattice QCD

Nucleon-nucleon correlations inside atomic nuclei: synergies, observations and theoretical models

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Precision studies of QCD in the low energy domain of the EIC

Cited by 40 publications

References 395 publications

Gravitational form factors of the proton from near-threshold vector meson photoproduction

Gravitational form factors of the proton from near-threshold vector meson photoproduction

Pion valence quark distribution at physical pion mass of N f = 2 + 1 + 1 lattice QCD

Nucleon-nucleon correlations inside atomic nuclei: synergies, observations and theoretical models

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Product

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Pion valence quark distribution at physical pion mass of N _f = 2 + 1 + 1 lattice QCD