Single-Spin Asymmetry in Inclusive π⁰ Production Measured at the Protvino 70 GeV Accelerator

2003/12/03 by A. Davidenko, V. Grishin, V. Khodyrev +21
Physics and Astronomy · #hep-ex

paper · pdf

published as Czech.J.Phys. 54 (2004) B167-B172 · 5 pages, 6 figures; Presented on "Advanced Studies Institute" - Symmetries and SPIN, (SPIN-Praha-2003), Prague, July 12 - July 19, 2003

arxiv created 2003/12/03 · arxiv updated 2009/12/01

Abstract

Single Spin Asymmetries (SSA) A_N measured in the two reactions at the Protvino 70 GeV accelerator are presented. A_N in the reaction p+p(pol)->π⁰+X in the central region is close to zero within the error bars. SSA in the reaction π^- +p(pol)->π⁰+X in the polarized target fragmentation region is equal to (-15 ± 4)% at |x_F|>0.4. There is an indication that the asymmetry arises at the same pion energy in the center of mass system.

Related

• Single spin asymmetries in inclusive π⁰ production in p+p and π^-+p interactions at 40-70 GeV
• Recent Results from Protvino Polarized Experiment Proza-M
• The Completion of Single-Spin Asymmetry Measurements at the Proza Setup
• The Comparative Study of the Inclusive π⁰ Analyzing Power in Reactions p+p(pol)->π⁰ + X and π^-+p(pol)->π⁰ + X at 50 and 40 Gev/C Respectively
• Energy dependence of the single spin asymmetries in inclusive pion production processes