Electroproduction of the Lambda/Sigma^0 hyperons at Q^2~0.5 (GeV/c)^2 at forward angles
Abstract
In 2018, the E12-17-003 experiment was conducted at the Thomas Jefferson National Accelerator Facility (JLab) to explore the possible existence of an nnLambda state in the reconstructed missing mass distribution from a tritium gas target [K. N. Suzuki et al., Prog. Theor. Exp. Phys. 2022, 013D01 (2022), B. Pandey et al., Phys. Rev. C 105, L051001 (2022)]. As part of this investigation, data was also collected using a gaseous hydrogen target, not only for a precise absolute mass scale calibration but also for the study of Lambda/Sigma^0 electroproduction. This dataset was acquired at Q^2~0.5 (GeV/c)^2, W=2.14 GeV, and theta_{gamma K}^{c.m.}~8 deg. It covers forward angles where photoproduction data is scarce and a low-Q^2 region that is of interest for hypernuclear experiments. On the other hand, this kinematic region is at a slightly higher Q^2 than previous hypernuclear experiments, thus providing crucial information for understanding the Q^2 dependence of the differential cross sections for Lambda/Sigma^0 hyperon electroproduction. This paper reports on the Q^2 dependence of the differential cross section for the e + p -> e' + K^+ + Lambda/Sigma^0 reaction in the 0.2-0.8 (GeV/c)^2, and provides comparisons with the currently available theoretical models.
Keywords
Cite
@article{arxiv.2403.01173,
title = {Electroproduction of the Lambda/Sigma^0 hyperons at Q^2~0.5 (GeV/c)^2 at forward angles},
author = {K. Okuyama and K. Itabashi and S. Nagao and S. N. Nakamura and K. N. Suzuki and T. Gogami and B. Pandey and L. Tang and P. Bydžovský and D. Skoupil and T. Mart and D. Abrams and T. Akiyama and D. Androic and K. Aniol and C. Ayerbe Gayoso and J. Bane and S. Barcus and J. Barrow and V. Bellini and H. Bhatt and D. Bhetuwal and D. Biswas and A. Camsonne and J. Castellanos and J-P. Chen and J. Chen and S. Covrig and D. Chrisman and R. Cruz-Torres and R. Das and E. Fuchey and K. Gnanvo and F. Garibaldi and T. Gautam and J. Gomez and P. Gueye and T. J. Hague and O. Hansen and W. Henry and F. Hauenstein and D. W. Higinbotham and C. E. Hyde and M. Kaneta and C. Keppel and T. Kutz and N. Lashley-Colthirst and S. Li and H. Liu and J. Mammei and P. Markowitz and R. E. McClellan and F. Meddi and D. Meekins and R. Michaels and M. Mihovilovič and A. Moyer and D. Nguyen and M. Nycz and V. Owen and C. Palatchi and S. Park and T. Petkovic and S. Premathilake and P. E. Reimer and J. Reinhold and S. Riordan and V. Rodriguez and C. Samanta and S. N. Santiesteban and B. Sawatzky and S. Širca and K. Slifer and T. Su and Y. Tian and Y. Toyama and K. Uehara and G. M. Urciuoli and D. Votaw and J. Williamson and B. Wojtsekhowski and S. A. Wood and B. Yale and Z. Ye and J. Zhang and X. Zheng},
journal= {arXiv preprint arXiv:2403.01173},
year = {2024}
}
Comments
11 pages, 15 figures