First measurement of AN at √s=200 GeV in polarized proton-proton elastic scattering at RHIC

被引：22

作者：

Bültmann, S

Chiang, IH

Chrien, RE

Drees, A

Gill, RL

Guryn, W ^{[1
]}

Landgraf, J

Ljubicic, TA

Lynn, D

Pearson, C

Pile, P

Rusek, A

Sakitt, M

Tepikian, S

Yip, K

Chwastowski, J

Pawlik, B

Haguenauer, M

Bogdanov, AA

Nurushev, SB

Runtzo, MF

Strikhanov, MN

Alekseev, IG

Kanavets, VP

Koroleva, LI

Morozov, BV

Svirida, DN

Khodinov, A

Rijssenbeek, M

Whitehead, L

Yeung, S

De, K

Guler, N

Li, J

Öztürk, N

Sandacz, A

机构：

[1] Brookhaven Natl Lab, Upton, NY 11973 USA

[2] Inst Nucl Phys, Krakow, Poland

[3] Ecole Polytech, F-91128 Palaiseau, France

[4] Moscow Engn Phys Inst, Moscow, Russia

[5] Inst Theoret & Expt Phys, Moscow 117259, Russia

[6] SUNY Stony Brook, Stony Brook, NY 11794 USA

[7] Univ Texas, Arlington, TX 76019 USA

[8] Soltan Inst Nucl Studies, PL-00681 Warsaw, Poland

来源：

PHYSICS LETTERS B | 2006年 / 632卷 / 2-3期

基金：

美国国家科学基金会;

关键词：

polarization; elastic scattering;

D O I：

10.1016/j.physletb.2005.10.041

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on the first measurement of the single spin analyzing power (AN) at root s = 200 GeV, obtained by the PP2PP experiment using polarized proton beams at the Relativistic Heavy Ion Collider (RHIC). Data points were measured in the four momentum transfer t range 0.01 <= vertical bar t vertical bar <= 0.03 (GeV/c)(2). Our result, averaged over the whole vertical bar t vertical bar interval is about one standard deviation above the calculation, which uses interference between electromagnetic spin-flip amplitude and hadronic non-flip amplitude, the source of A(N). The difference could be explained by an additional contribution of a hadronic spin-flip amplitude to A(N) (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：167 / 172

页数：6

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