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Spin transfer in inclusive Lambda(0) production by transversely polarized protons at 200 GeV/c

Authors :
A Bravar
DL Adams
N Akchurin
NI Belikov
BE Bonner
J Bystricky
MD Corcoran
JD Cossairt
J Cranshaw
AA Derevschikov
H En'yo
H Funahashi
Y Goto
OA Grachov
DP Grosnick
DA Hill
T Iijima
K Imai
Y Itow
K Iwatani
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
GF Rappazzo
Anthony L Read
JB Roberts
L van Rossum
VL Rykov
N Saito
G Salvato
P Schiavon
J Skeens
VL Solovyanov
H Spinka
RW Stanek
R Takashima
F Takeutchi
N Tamura
DG Underwood
AN Vasiliev
JL White
S Yamashita
A Yokosawa
T Yoshida
AM Zanetti
Source :
Physical review letters, 78 (1997): 4003–4006. doi:10.1103/PhysRevLett.78.4003, info:cnr-pdr/source/autori:A Bravar, DL Adams, N Akchurin, NI Belikov, BE Bonner, J Bystricky, MD Corcoran, JD Cossairt, J Cranshaw, AA Derevschikov, H En'yo, H Funahashi, Y Goto, OA Grachov, DP Grosnick, DA Hill, T Iijima, K Imai, Y Itow, K Iwatani, 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, GF Rappazzo, Anthony L Read, JB Roberts, L van Rossum, VL Rykov, N Saito, G Salvato, P Schiavon, J Skeens, VL Solovyanov, H Spinka, RW Stanek, R Takashima, F Takeutchi, N Tamura, DG Underwood, AN Vasiliev, JL White, S Yamashita, A Yokosawa, T Yoshida, AM Zanetti/titolo:Spin transfer in inclusive Lambda(0) production by transversely polarized protons at 200 GeV%2Fc/doi:10.1103%2FPhysRevLett.78.4003/rivista:Physical review letters (Print)/anno:1997/pagina_da:4003/pagina_a:4006/intervallo_pagine:4003–4006/volume:78
Publication Year :
1997
Publisher :
American Physical Society., [Woodbury, N.Y., etc.], Stati Uniti d'America, 1997.

Abstract

Surprisingly large polarizations in hyperon production by unpolarized protons have been known for a long time. The spin dynamics of the production process can be further investigated with polarized beams. Recently, a negative asymmetry A(N) was found in inclusive Lambda(0) production with a 200 GeV/c transversely polarized proton beam. The depolarization D-NN in p up arrow + p --> Lambda(0) + X has been measured with the same beam over a wide x(F) range and at moderate p(tau). D-NN reaches positive values of about 30% at high x(F) and p(T) similar to 1.0 Ge V/c. This result shows a sizable spin transfer from the incident polarized proton to the outgoing Lambda(0).

Details

Language :
English
Database :
OpenAIRE
Journal :
Physical review letters, 78 (1997): 4003–4006. doi:10.1103/PhysRevLett.78.4003, info:cnr-pdr/source/autori:A Bravar, DL Adams, N Akchurin, NI Belikov, BE Bonner, J Bystricky, MD Corcoran, JD Cossairt, J Cranshaw, AA Derevschikov, H En'yo, H Funahashi, Y Goto, OA Grachov, DP Grosnick, DA Hill, T Iijima, K Imai, Y Itow, K Iwatani, 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, GF Rappazzo, Anthony L Read, JB Roberts, L van Rossum, VL Rykov, N Saito, G Salvato, P Schiavon, J Skeens, VL Solovyanov, H Spinka, RW Stanek, R Takashima, F Takeutchi, N Tamura, DG Underwood, AN Vasiliev, JL White, S Yamashita, A Yokosawa, T Yoshida, AM Zanetti/titolo:Spin transfer in inclusive Lambda(0) production by transversely polarized protons at 200 GeV%2Fc/doi:10.1103%2FPhysRevLett.78.4003/rivista:Physical review letters (Print)/anno:1997/pagina_da:4003/pagina_a:4006/intervallo_pagine:4003–4006/volume:78
Accession number :
edsair.cnr...........25e1a0a9a4367509ffcf635b72ceff4e
Full Text :
https://doi.org/10.1103/PhysRevLett.78.4003