Journal article

Publication year: 2021

Journal: The European Physical Journal A

Volume number: 57

Issue number: 12

ISSN: 1434-6001

eISSN: 1434-601X

DOI Link: https://doi.org/10.1140/epja/s10050-021-00625-2

Publisher: Springer

Abstract: 
Backward angle (u-channel) scattering provides complementary information for studies of hadron spectroscopy and structure, but has been less comprehensively studied than the corresponding forward angle case. As a result, the physics of u-channel scattering poses a range of new experimental and theoretical opportunities and questions. We summarize recent progress in measuring and understanding high energy reactions with baryon charge exchange in the u-channel, as discussed in the first Backward angle (u-channel) Physics Workshop. In particular, we discuss backward angle measurements and their theoretical description via both hadronic models and the collinear factorization approach, and discuss planned future measurements of u-channel physics. Finally, we propose outstanding questions and challenges for u-channel physics.

Harvard Citation style: Gayoso, C., Bibrzycki, L., Diehl, S., Heppelmann, S., Higinbotham, D., Huber, G., et al. (2021) Progress and opportunities in backward angle (u-channel) physics, The European Physical Journal A, 57(12), Article 342. https://doi.org/10.1140/epja/s10050-021-00625-2

APA Citation style: Gayoso, C., Bibrzycki, L., Diehl, S., Heppelmann, S., Higinbotham, D., Huber, G., Kay, S., Klein, S., Laget, J., Li, W., Mathieu, V., Park, K., Perry, R., Pire, B., Semenov-Tian-Shansky, K., Stanek, A., Stevens, J., Szymanowski, L., Weiss, C., ...Yu, B. (2021). Progress and opportunities in backward angle (u-channel) physics. The European Physical Journal A. 57(12), Article 342. https://doi.org/10.1140/epja/s10050-021-00625-2