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High-xT single-spin asymmetry in π0 and η production at xF=0 by 200 GeV polarized antiprotons and protons
- Source :
- Physics letters. B, 276 (1992): 531–535. doi:10.1016/0370-2693(92)91679-4, info:cnr-pdr/source/autori:DL Adams, N Akchurin, NI Belikov, J Bystricky, MD Corcoran, JD Cossairt, J Cranshaw, AA Derevschikov, H En'yo, H Funahashi, Y Goto, OA Grachov, DP Grosnick, DA Hill, K Imai, Y Itow, K Iwatani, KW Krueger, K Kuroda, M Laghai, F Lehar, A De Lesquen, D Lopiano, FC Luehring, T Maki, S Makino, A Masaike, Yu A Matulenko, AP Meschanin, A Michalowicz, Donald H Miller, K Miyake, T Nagamine, F Nessi-Tedaldi, M Nessi, C Nguyen, SB Nurushev, Y Ohashi, Y Onel, DI Patalakha, G Pauletta, A Penzo, Anthony L Read, JB Roberts, L Van Rossum, VL Rykov, Nobuhiko Saito, G Salvato, P Schiavon, J Skeens, VL Solovyanov, H Spinka, R Takashima, F Takeutchi, N Tamura, N Tanaka, DG Underwood, AN Vasiliev, A Villari, JL White, S Yamashita, A Yokosawa, T Yoshida, A Zanetti/titolo:High-xT single-spin asymmetry in pi0 and eta production at xF= 0 by 200 GeV polarized antiprotons and protons/doi:10.1016%2F0370-2693(92)91679-4/rivista:Physics letters. B (Print)/anno:1992/pagina_da:531/pagina_a:535/intervallo_pagine:531–535/volume:276
- Publication Year :
- 1992
- Publisher :
- Elsevier BV, 1992.
-
Abstract
- A measurement of the single-spin asymmetry A(N) in P up + P --> pi-0 + X at 200 GeV with x(F) = O shows a transition in the production process from a "low-x(T)" regime with A(N) = 0, through an intermediate region of negative asymmetry, to a "high-x(T)" regime with A(N) > 0.3. This transition occurs at x(T) almost-equal-to 0.4 and is consistent with x(T)-scaling of A(N) in pion production using polarized beams or targets from square-root -s = 5.2 to 19.4 GeV. Results for A(N) in eta-production by polarized protons and in pi-0 production by polarized antiprotons are also presented.
Details
- ISSN :
- 03702693
- Volume :
- 276
- Database :
- OpenAIRE
- Journal :
- Physics Letters B
- Accession number :
- edsair.doi.dedup.....6920ba231e64731c858d73b3ea2ba420