Longitudinal Double-Spin Asymmetries for \(\pi^{0}\)s in the Forward Direction for 510 GeV Polarized \(pp\) Collisions

• Published in: arXiv.org 2018-06
• Main Authors: Adamczyk, L, Ahammed, Z, Anderson, D M, Barish, K, Bellwied, R, Bhati, A K, Brandenburg, J D, Brown, D, Butterworth, J, M Calderón de la Barca Sánchez, Chaloupka, P, Chen, X, Christie, W, Deppner, I M, Derevschikov, A A, Drachenberg, J L, Evdokimov, O, Eyser, O, Fazio, S, Filip, P, Fulek, L, Gagliardi, C A, Grosnick, D, Gunarathne, D S, Guo, Y, Huang, X, Huang, S L, Igo, G, Jacobs, W W, Jia, J, Jowzaee, S, Judd, E G, Kabana, S, Kalinkin, D, Kang, K, Kapukchyan, D, Kauder, K, Kikoła, D P, Kim, C, Kinghorn, T A, Kisiel, A, Krueger, K, Kumar, S, Kvapil, J, Kwasizur, J H, Landgraf, J M, Lednicky, R, X Li, C Li, W Li, Liu, Y, Ljubicic, T, Luo, S, L Ma, Magdy, N, Markert, C, Matonoha, O, Meehan, K, Mishra, D, Nemes, D B, Odyniec, G, Page, B S, Pei, H, Pluta, J, Posik, M, Ramachandran, S, Ray, R L, Ritter, H G, Romero, J L, Schmah, A M, Seger, J, Seyboth, P, Shi, S S, Shou, Q Y, Solyst, W, Sorensen, P, Spinka, H M, Stewart, D J, Szymanski, P, Timmins, A R, Todoroki, T, Tokarev, M, Tsai, O D, B Tu, Underwood, D G, Upsal, I, Vassiliev, I, Voloshin, S A, Wang, F, Wieman, H, Xu, Q H, J Xu, Xu, Y F, Yang, Y, Z Ye, Yip, K, Zhang, Y, Zhang, S, Zhao, J, Zhou, L
• Format: Article
• Language: English
• Subjects: Asymmetry; Distribution functions; Gluons; Particle collisions; Pions; Protons
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.1805.09745

The STAR Collaboration reports measurements of the longitudinal double-spin asymmetry, \(A_{LL}\), for neutral pions produced at forward directions in polarized proton-proton collisions, at a center-of-mass energy of \(510\) GeV. Results are given for transverse momenta in the range \(2