Measurement of the single-spin asymmetry in the reaction {pi}{sup -}d{sub {up_arrow}} {sup {yields} {pi}0}X in the beam-fragmentation region at 40 GeV and p{sub T} of up to 2 GeV/c

Journal Article · Wed Dec 15 00:00:00 EST 2010 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778810120069· OSTI ID:21436210

Belikov, N I ^[1]; Borisov, N S ^[2]; Vasiliev, A N; Derevschikov, A A; Matulenko, Yu A; Meschanin, A P; Minaev, N G ^[1]; Neganov, A B; Nurushev, S B ^[2]; Prudkoglyad, A F; Soloviev, L F ^[1]; Usov, Yu A; Fedorov, A N; Schevelev, O N ^[2]

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1. Institute for High Energy Physics (Russian Federation)
2. Joint Institute for Nuclear Research (Russian Federation)

The single-spin asymmetry A{sub N} in the reaction {pi}{sup -} + d{sub {up_arrow}} {sup {yields} {pi}0} + X in the beam-fragmentation region at the energy of 40 GeV was investigated by using the PROZA setup installed at the U-70 accelerator of the Institute for High Energy Physics (IHEP, Protvino). It was measured to be A{sub N} = (13.6 {+-} 2.6(stat.) {+-} 2.0(syst.))% in the intervals 0.7 < x{sub F} < 1.0 and 1.0 < p{sub T} < 1.8 GeV/c. The results agree with the asymmetry of {pi}{sup 0} mesons in the charge-exchange reaction {pi}{sup -} + p{sub {up_arrow}} {sup {yields} {pi}0} + n at the same values of the transverse momentum and beam energy. The asymmetry in the reaction K{sup -} + d{sub {up_arrow}} {sup {yields} {pi}0} + X was simultaneously measured and found to be A{sub N} = (11 {+-} 14)% for p{sub T} > 1.2 GeV/c.

• OSTI ID: 21436210
• Journal Information: Physics of Atomic Nuclei, Vol. 73, Issue 12; Other Information: DOI: 10.1134/S1063778810120069; Copyright (c) 2010 Pleiades Publishing, Ltd.; ISSN 1063-7788
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
ASYMMETRY
BEAMS
CHARGE-EXCHANGE REACTIONS
FRAGMENTATION
GEV RANGE
IHEP
PION REACTIONS
PIONS MINUS
PIONS NEUTRAL
SPIN
TRANSVERSE MOMENTUM
ANGULAR MOMENTUM
BOSONS
CHARGED-PARTICLE REACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
HADRON REACTIONS
HADRONS
LINEAR MOMENTUM
MESON REACTIONS
MESONS
NATIONAL ORGANIZATIONS
NUCLEAR REACTIONS
PARTICLE PROPERTIES
PIONS
PSEUDOSCALAR MESONS
RUSSIAN ORGANIZATIONS