"Table 121" of "Polarization Measurements in pi+ p Elastic Scattering from 0.6-GeV/c to 2.65-GeV/c"

THE FOLLOWING COMMENTS ARE TAKEN FROM THE PI N COMPILATION OF R.L. KELLY. THEY ARE THAT COMPILATION& apos;S COMPLETE SET OF COMMENTS FOR PAPERS RELATED TO THE SAME EXPERIMENT (DESIGNATED MARTIN74) AS THE CURRENT PAPER. (THE IDENTIFIER PRECEDING THE REFERENCE AND COMMENT FOR EACH PAPER IS FOR CROSS-REFERENCING WITHIN THESE COMMENTS ONLY AND DOES NOT NECESSARILY AGREE WITH THE SHORT CODE USED ELSEWHERE IN THE PRESENT COMPILATION.) /// MARTIN72 [J. F. MARTIN AND J. C. SLEEMAN,PRIV. COMM.,1972] -- PRELIMINARY VERSION OF SLEEMAN74 DATA. /// MARTIN72T [J. F. MARTIN,HEP/T/35(OXFORD THESIS),1972.] -- THESIS ON DATA ABOVE 1.4 GEV/C. /// SLEEMAN74 [J. C. SLEEMAN,PRIV. COMM.,1974.] -- DATA TAPE AND LISTING OF FINAL RESULTS OF THE EXPERIMENT. /// THRESHER74 [J. J. THRESHER,PRIV. COMM.,1974.] -- TWO ERRORS,STATISTICAL AND SYSTEMATIC,ARE RECORDED FOR EACH DATA POINT ON THE SLEEMAN74 DATA TAPE. DECIDING HOW TO USE THESE PROPERLY IN A FITTING PROGRAM IS NOT STRAIGHTFORWARD,PARTICULARLY SINCE (ACCORDING TO MARTIN72T AND THRESHER74) THE SYSTEMATIC ERRORS TEND TO BE SOMEWHAT CORRELATED BETWEEN DIFFERENT BINS. HOWEVER,THE CORRELATION BETWEEN THE STATISTICAL AND SYSTEMATIC ERROR IN A SINGLE BIN IS NOT LARGE,THE FIRST COMING MAINLY FROM EVENT COUNTING AND THE SECOND MAINLY FROM BACKGROUND ESTIMATION (SEE MARTIN72T). ON ADVICE OF THRESHER74 WE HAVE COMBINED THE STATISTICAL AND SYSTEMATIC ERRORS FOR EACH BIN IN QUADRATURE,AND HAVE NOT ATTEMPTED TO TAKE CORRELATIONS BETWEEN DIFFERENT BINS INTO ACCOUNT. /// MARTIN74 [J. F. MARTIN,RL-74-016,1974.] -- PREPRINT VERSION OF MARTIN75. NOT IDENTICAL TO MARTIN75. /// MARTIN75 [J. F. MARTIN,NP B89,253(1975)] -- PI+ P POL AT 68 MOMENTA BETWEEN 603 AND 2651 MEV/C. DONE AT NIMROD WITH LMN TARGET,SCINTILLATION COUNTER HODOSCOPES,AND CHERENKOV COUNTERS TO RESOLVE THE REGION OF KINEMATIC AMBIGUITY AND REDUCE BACKGROUND. THE NE IS RECORDED AS +/-6 PCT OVERALL AND +/-2 PCT RESIDUAL AT EACH MOMENTUM. THIS IS AN OVERSIMPLIFICATION AS DATA WERE TAKEN SIMULTANEOUSLY AT PAIRS OF MOMENTA SEPARATED BY ABOUT 1.9 PCT. THE RESIDUAL NE OF SUCH A PAIR IS 2 PCT,BUT THE NORMALIZATIONS FOR THE TWO MEMBERS OF THE PAIR ARE 100 PCT CORRELATED. THE MARTIN75 DATA ARE NOT THE SAME AS THE SLEEMAN74 DATA. /// COMMENTS ON MODIFICATIONS TO LOVELACE71 COMPILATION BY KELLY -- LOVELACE71 VERSION COMES FROM TWO PRELIMINARY VERSIONS OF THE DATA EARLIER THAN MARTIN72 (LOVELACE71IDS=BROWN70 AND SLEEMA71). MANY MAJOR DIFFERENCES. RUTHERFORD, POLARIZED TARGET.

以下注释取自R.L.凯利（R.L. KELLY）的π介子-核子（πN）相互作用汇编，为该汇编中针对与当前论文同属一项实验（编号为MARTIN74）的相关论文的完整注释集。（每篇论文及其注释前的标识符仅用于本注释集内部的交叉引用，未必与本汇编其他位置使用的短代码一致。）

MARTIN72 [J. F. 马丁与J. C. 斯利曼，私人通信（private communication），1972年] —— SLEEMAN74数据集的预发布版本。
MARTIN72T [J. F. 马丁，HEP/T/35（牛津大学博士论文），1972年] —— 针对1.4 GeV/c以上能区数据的博士论文。
SLEEMAN74 [J. C. 斯利曼，私人通信（private communication），1974年] —— 本实验最终结果的数据磁带与结果清单。
THRESHER74 [J. J. 塞舍尔，私人通信（private communication），1974年] —— SLEEMAN74数据磁带的每个数据点均记录了统计误差与系统误差两类误差。在拟合程序中合理处理这两类误差并非易事，尤其根据MARTIN72T与THRESHER74的描述，不同数据分箱（bin）的系统误差往往存在一定相关性。但单个数据分箱内统计误差与系统误差的相关性较弱：前者主要源于事件计数，后者则主要来自本底估计（详见MARTIN72T）。根据塞舍尔74的建议，我们对每个数据分箱的统计与系统误差进行了正交合成（quadrature，即平方和开方的误差合成方式），且未考虑不同数据分箱间的相关性。
MARTIN74 [J. F. 马丁，RL-74-016，1974年] —— MARTIN75的预印本版本，与MARTIN75内容不完全一致。
MARTIN75 [J. F. 马丁，NP B89, 253(1975)] —— 68个动量点的π⁺-质子（π⁺P）极化相互作用实验数据，动量范围为603至2651兆电子伏特每光速（MeV/c）。实验在尼姆罗德加速器（NIMROD）上开展，采用LMN靶、闪烁计数器描迹仪（scintillation counter hodoscope）与切伦科夫计数器（Cherenkov counter）以解决运动学歧义并压低本底。整体归一化误差记为±6%，每个动量点的残差归一化误差为±2%。但这一描述存在过度简化之处：实验同时采集了间隔约1.9%的动量对数据，此类动量对的残差归一化误差为2%，但该对中两个数据集的归一化完全相关。MARTIN75数据集与SLEEMAN74数据集并不相同。

关于凯利对LOVELACE71汇编的修改说明 —— LOVELACE71版本的数据来自MARTIN72之前的两个预发布数据集（LOVELACE71标识对应BROWN70与SLEEMA71），二者存在诸多显著差异。实验采用极化靶，于卢瑟福实验室开展。