High-energy hadron spin-flip amplitude at small momentum transfer and new A(N) data from RHIC

Cudell, Jean-René; Predazzi, E.; Selyugin, Oleg Viktorovich

doi:10.1140/epja/i2004-10012-2

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High-energy hadron spin-flip amplitude at small momentum transfer and new A(N) data from RHIC

Cudell, Jean-René; Predazzi, E.; Selyugin, Oleg Viktorovich

2004 • In European Physical Journal. A, Hadrons and Nuclei, 21 (3), p. 479-486

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https://hdl.handle.net/2268/2036

DOI
10.1140/epja/i2004-10012-2

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Keywords :

spin-flip; proton-nucleus scattering

Abstract :

[en] In the case of elastic high-energy hadron-hadron scattering, the impact of the large-distance contributions on the behaviour of the slopes of the spin-non-flip and of the spin-flip amplitudes is analysed. It is shown that the long tail of the hadronic potential in impact parameter space leads to a value of the slope of the reduced spin-flip amplitude larger than that of the spin-non-flip amplitude. This effect is taken into account in the calculation of the analysing power in proton-nucleus reactions at high energies. It is shown that the preliminary measurement of A(N) (for p 12C obtained by the E950 Collaboration indeed favours a spin-flip amplitude with a large slope. Predictions for A)(N) (at P)(L) = 250 GeV/c are given.

Disciplines :

Physics

Author, co-author :

Cudell, Jean-René ; Université de Liège - ULiège > Département d'astrophys.

Predazzi, E.

Selyugin, Oleg Viktorovich

Language :

English

Title :

High-energy hadron spin-flip amplitude at small momentum transfer and new A(N) data from RHIC

Publication date :

September 2004

Journal title :

European Physical Journal. A, Hadrons and Nuclei

ISSN :

1434-6001

eISSN :

1434-601X

Publisher :

Springer, New York, United States - New York

Volume :

Issue :

Pages :

479-486

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

http://arxiv.org/abs/hep-ph/0401040

Available on ORBi :

since 04 December 2008

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