Searching for an Enhanced Signal of the Onset of Color Transparency in Baryons with D(e,e′p)n Scattering

Li, Shujie; Yero, Carlos; West, Jennifer Rittenhouse; Bennett, Clare; Cosyn, Wim; Higinbotham, Douglas; Sargsian, Misak; Szumila-Vance, Holly

doi:10.3390/physics4040092

Searching for an Enhanced Signal of the Onset of Color Transparency in Baryons with D(e,e′p)n Scattering

Journal Article · Wed Dec 14 00:00:00 EST 2022 · Physics

DOI:https://doi.org/10.3390/physics4040092· OSTI ID:1903643

Li, Shujie; ; ; Bennett, Clare; ; ; Sargsian, Misak;

Observation of the onset of color transparency in baryons would provide a new means of studying the nuclear strong force and would be the first clear evidence of baryons transforming into a color-neutral point-like size in the nucleus as predicted by quantum chromodynamics. Recent C(e,e′p) results from electron-scattering did not observe the onset of color transparency (CT) in protons up to spacelike four-momentum transfers squared, Q2=14.2 GeV2. The traditional methods of searching for CT in (e,e′p) scattering use heavy targets favoring kinematics with already initially reduced final state interactions (FSIs) such that any CT effect that further reduces FSIs will be small. The reasoning behind this choice is the difficulty in accounting for all FSIs. D(e,e′p)n, on the other hand, has well-understood FSI contributions from double scattering with a known dependence on the kinematics and can show an increased sensitivity to hadrons in point-like configurations. Double scattering is the square of the re-scattering amplitude in which the knocked-out nucleon interacts with the spectator nucleon, a process that is suppressed in the presence of point-like configurations and is particularly well-studied for the deuteron. This suppression yields a quadratic sensitivity to CT effects and is strongly dependent on the choice of kinematics. Here, we describe a possible Jefferson National Accelerator Facility (JLab) electron-scattering experiment that utilizes these kinematics and explores the potential signal for the onset of CT with enhanced sensitivity as compared to recent experiments.

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Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)

Sponsoring Organization:: National Science Foundation (NSF); USDOE; USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Nuclear Energy (NE); USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: AC02-05CH11231; AC05-06OR23177; FG02-01ER41172; SC0022007

OSTI ID:: 1903643

Alternate ID(s):: OSTI ID: 1906379

Report Number(s):: DOE/OR/23177-5632; JLAB-PHY-22-3741; arXiv:2209.14400; PII: physics4040092

Journal Information:: Physics, Journal Name: Physics Journal Issue: 4 Vol. 4; ISSN 2624-8174; ISSN PBSHAD

Publisher:: MDPI AGCopyright Statement

Country of Publication:: Switzerland

Language:: English

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