RHIC FY15 pp Run RHIC and AGS polarization analysis

Huang, H.¹  Adams, P.¹ 

[1]Brookhaven National Lab. (BNL), Upton, NY (United States)

关键词: BROOKHAVEN AGS;    BROOKHAVEN RHIC;    DATA;    SPIN ORIENTATION;    PROTON BEAMS;    POLARIZD BEAMS;    SIMULATION;    ERRORS Relativistic Heavy Ion Collider;   

DOI  :  10.2172/1245379
RP-ID  :  BNL--111891-2016
PID  :  OSTI ID: 1245379
Others  :  R&D Project: KBCH139
Others  :  Other: KB0202011
Others  :  TRN: US1601185

学科分类：核物理和高能物理

美国|英语

来源: SciTech Connect

【 摘 要 】

The polarization information is important for the spin physics program in Relativistic Heavy Ion Collider (RHIC). There are discrepancies between AGS and RHIC polarization measurements. First, the face value of AGS polarization is higher than RHIC ones in general. Second, the measured polarization profile (described by the profile ratio R) is stronger in AGS than in RHIC. This note analyzes the polarization data from FY15 pp run period. The results show that the differences between AGS and RHIC polarization measurements are reasonable, but the R value difference is puzzling. The difference between blue and yellow ring is worth of spin simulation to explain.