弹性电子散射中自旋为0的核自由度上的束流正常单自旋不对称性的新测量
摘要：对0.95和2.18 GeV电子与\(^{12}\)C、\(^{40}\)Ca、\(^{48}\)Ca和\(^{208}\)Pb之间的弹性散射进行了束正常单自旋不对称性（\(A_n\)）的精确测量，这些测量在非常前向的角度进行，该角度下已进行了最详细的理论计算。首次测量出了\(^{40}\)Ca和\(^{48}\)Ca的\(A_n\)与\(^{12}\)C的结果类似，与理论计算对Z≤20的核物质的预期一致，从而证明了理论计算对这种核物质的有效性。我们还报道了在两个新的动量转移（Q\(^2\)）下对\(^{208}\)Pb的\(A_n\)的测量，扩展了以前的测量结果。我们的新数据证实了之前报道的令人惊讶的结果，三个数据点都与Z≤20的核物质的结果显著不符。这些数据证实了我们对包含不到50个核子的核物质的\(A_n\)基本动力学的理解，但指出需要进一步研究以理解在与\(^{208}\)Pb散射时发现的异常\(A_n\)行为。
作者：PREX and CREX Collaborations: D. Adhikari (1), H. Albataineh (2), D. Androic (3), K. Aniol (4), D. S. Armstrong (5), T. Averett (5), C. Ayerbe Gayoso (5), S. Barcus (6), V. Bellini (7), R. S. Beminiwattha (8), J. F. Benesch (6), H. Bhatt (9), D. Bhatta Pathak (8), D. Bhetuwal (9), B. Blaikie (10), J. Boyd (11), Q. Campagna (5), A. Camsonne (6), G. D. Cates (11), Y. Chen (8), C. Clarke (12), J. C. Cornejo (13), S. Covrig Dusa (6), M. M. Dalton (6), P. Datta (14), A. Deshpande (12 and 15 and 16), D. Dutta (9), C. Feldman (12 and 17), E. Fuchey (14), C. Gal (9 and 11 and 12 and 15), D. Gaskell (6), T. Gautam (18), M. Gericke (10), C. Ghosh (12 and 19), I. Halilovic (10), J.-O. Hansen (6), F. Hauenstein (20), W. Henry (21), C. J. Horowitz (22), C. Jantzi (11), S. Jian (11), S. Johnston (19), D. C. Jones (21), B. Karki (23), S. Kakkar (10), S. Katugampola (11), C. E. Keppel (6), P. M. King (23), D. E. King (24), M. Knauss (25), K.S. Kumar (19), T. Kutz (12), N. Lashley-Colthirst (18), G. Leverick (10), H. Liu (19), N. Liyange (11), S. Malace (6), J. Mammei (10), R. Mammei (26), M. McCaughan (6), D. McNulty (1), D. Meekins (6), C. Metts (5), R. Michaels (6), M. Mihovilovic (27 and 28), M.M. Mondal (12 and 15), J. Napolitano (21), D. Nikolaev (21), M. N. H. Rashad (20), V. Owen (5), C. Palatchi (11 and 15), J. Pan (10), B. Pandey (18), S. Park (9 and 12), K. D. Paschke (11), M. Petrusky (12 and 29), M. L. Pitt (30), S. Premathilake (11), A. J. R. Puckett (14), B. Quinn (13), R. Radloff (23), S. Rahman (10), A. Rathnayake (11), B. T. Reed (22), P. E. Reimer (31), R. Richards (12), S. Riordan (31), Y. Roblin (6), S. Seeds (14), A. Shahinyan (32), P. A. Souder (24), L. Tang (6 and 18), M. Thiel (33), Y. Tian (24), G. M. Urciuoli (34), E. W. Wertz (5), B. Wojtsekhowski (6), W. Xiong (24), B. Yale (5), T. Ye (12), A. Zec (11), W. Zhang (12), J. Zhang (12 and 15 and 35), X. Zheng (11) ((1) Idaho State University, (2) Texas A & M University, (3) University of Zagreb, (4) California State University Los Angeles, (5) William & Mary, (6) Thomas Jefferson National Accelerator Facility, (7) Istituto Nazionale di Fisica Nucleare Sezione di Catania, (8) Louisiana Tech University, (9) Mississippi State University, (10) University of Manitoba, (11) University of Virginia, (12) Stony Brook State University of New York, (13) Carnegie Mellon University, (14) University of Connecticut, (15) Center for Frontiers in Nuclear Science, (16) Brookhaven National Laboratory, (17) Institute for Advanced Computational Science Stony Brook, (18) Hampton University, (19) University of Massachusetts Amherst, (20) Old Dominion University, (21) Temple University, (22) Indiana University, (23) Ohio University, (24) Syracuse University, (25) Duquesne University, (26) University of Winnipeg, (27) J^ozef Stefan Institute, (28) University of Ljubljana, (29) University of Colorado Boulder, (30) Virginia Tech, (31) Argonne National Laboratory, (32) Yerevan Physics Institute, (33) Institut f"ur Kernphysik Johannes Gutenberg-Universit"at, (34) Istituto Nazionale di Fisica Nucleare Sezione di Roma, (35) Shandong University)
论文ID：2111.04250
分类：Nuclear Experiment
分类简称：nucl-ex
提交时间：2022-08-10