MEASUREMENT OF RHO, THE RATIO OF THE REAL TO THE IMAGINARY PART OF THE (P)BAR-P FORWARD ELASTIC-SCATTERING AMPLITUDE, AT ROOT-S = 1.8 TEV

被引:162
作者
AMOS, NA
AVILA, C
BAKER, WF
BERTANI, M
BLOCK, MM
DIMITROYANNIS, DA
EARTLY, DP
ELLSWORTH, RW
GIACOMELLI, G
GOMEZ, B
GOODMAN, JA
GUSS, CM
LENNOX, AJ
MONDARDINI, MR
NEGRET, JP
OREAR, J
PRUSS, SM
RUBINSTEIN, R
SADR, S
SANABRIA, JC
SHUKLA, S
SPAGNOLI, M
VERONESI, I
ZUCCHELLI, S
机构
[1] UNIV BOLOGNA,I-40126 BOLOGNA,ITALY
[2] CORNELL UNIV,ITHACA,NY 14853
[3] IST NAZL FIS NUCL,BOLOGNA,ITALY
[4] UNIV MARYLAND,COLLEGE PK,MD 20742
[5] GEORGE MASON UNIV,FAIRFAX,VA 22030
关键词
D O I
10.1103/PhysRevLett.68.2433
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We have measured-rho, the ratio of the real to the imaginary part of the ppBAR forward elastic-scattering amplitude, at square-root s = 1.8 TeV. Our result, rho = 0.140 +/- 0.069, is compared with extrapolations from lower-energy data based on dispersion relations, and with the UA4 value at square-root s = 546 GeV.
引用
收藏
页码:2433 / 2436
页数:4
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