Spin transfer in exclusive Λ production from →pp collisions at 3.67GeV/c

DISTO Collaboration

doi:10.1103/PhysRevLett.83.1534

Spin transfer in exclusive Λ production from ^→pp collisions at 3.67GeV/c

DISTO Collaboration

Research output: Contribution to journal › Article › peer-review

Abstract

We report the first polarization transfer measurements for exclusive hyperon production reactions. The normal spin transfer coefficient D_NN for ^→pp → pK⁺ ^→Λ is large and negative for forward Λ production at a beam momentum of 3.67GeV/c, a result qualitatively consistent with expectations for a mechanism dominated by kaon exchange and rescattering. The sign of D_NN is opposite to that observed in the fragmentation regime for inclusive Λ production at much higher energies.

Original language	English
Pages (from-to)	1534-1537
Number of pages	4
Journal	Physical Review Letters
Volume	83
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevLett.83.1534
Publication status	Published - 1999
Externally published	Yes

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10.1103/PhysRevLett.83.1534

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@article{294a7520c6694a168f584d005c412610,

title = "Spin transfer in exclusive Λ production from →pp collisions at 3.67GeV/c",

abstract = "We report the first polarization transfer measurements for exclusive hyperon production reactions. The normal spin transfer coefficient DNN for →pp → pK+ →Λ is large and negative for forward Λ production at a beam momentum of 3.67GeV/c, a result qualitatively consistent with expectations for a mechanism dominated by kaon exchange and rescattering. The sign of DNN is opposite to that observed in the fragmentation regime for inclusive Λ production at much higher energies.",

author = "\{DISTO Collaboration\} and F. Balestra and Y. Bedfer and R. Bertini and Bland, \{L. C.\} and A. Brenschede and F. Brochard and Bussa, \{M. P.\} and V. Chalyshev and Seonho Choi and M. Debowski and M. Dzemidzic and Faivre, \{J. Cl\} and Falomkin, \{I. V.\} and L. Fava and L. Ferrero and J. Foryciarz and V. Frolov and R. Garfagnini and D. Gill and A. Grasso and S. Heinz and Ivanov, \{V. V.\} and Jacobs, \{W. W.\} and W. K{\"u}hn and A. Maggiora and M. Maggiora and A. Manara and D. Panzieri and Pfaff, \{H. W.\} and G. Piragino and Pontecorvo, \{G. B.\} and A. Popov and J. Ritman and P. Salabura and F. Tosello and Vigdor, \{S. E.\} and G. Zosi",

year = "1999",

doi = "10.1103/PhysRevLett.83.1534",

language = "English",

volume = "83",

pages = "1534--1537",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "8",

}

TY - JOUR

T1 - Spin transfer in exclusive Λ production from →pp collisions at 3.67GeV/c

AU - DISTO Collaboration

AU - Balestra, F.

AU - Bedfer, Y.

AU - Bertini, R.

AU - Bland, L. C.

AU - Brenschede, A.

AU - Brochard, F.

AU - Bussa, M. P.

AU - Chalyshev, V.

AU - Choi, Seonho

AU - Debowski, M.

AU - Dzemidzic, M.

AU - Faivre, J. Cl

AU - Falomkin, I. V.

AU - Fava, L.

AU - Ferrero, L.

AU - Foryciarz, J.

AU - Frolov, V.

AU - Garfagnini, R.

AU - Gill, D.

AU - Grasso, A.

AU - Heinz, S.

AU - Ivanov, V. V.

AU - Jacobs, W. W.

AU - Kühn, W.

AU - Maggiora, A.

AU - Maggiora, M.

AU - Manara, A.

AU - Panzieri, D.

AU - Pfaff, H. W.

AU - Piragino, G.

AU - Pontecorvo, G. B.

AU - Popov, A.

AU - Ritman, J.

AU - Salabura, P.

AU - Tosello, F.

AU - Vigdor, S. E.

AU - Zosi, G.

PY - 1999

Y1 - 1999

N2 - We report the first polarization transfer measurements for exclusive hyperon production reactions. The normal spin transfer coefficient DNN for →pp → pK+ →Λ is large and negative for forward Λ production at a beam momentum of 3.67GeV/c, a result qualitatively consistent with expectations for a mechanism dominated by kaon exchange and rescattering. The sign of DNN is opposite to that observed in the fragmentation regime for inclusive Λ production at much higher energies.

AB - We report the first polarization transfer measurements for exclusive hyperon production reactions. The normal spin transfer coefficient DNN for →pp → pK+ →Λ is large and negative for forward Λ production at a beam momentum of 3.67GeV/c, a result qualitatively consistent with expectations for a mechanism dominated by kaon exchange and rescattering. The sign of DNN is opposite to that observed in the fragmentation regime for inclusive Λ production at much higher energies.

UR - https://www.scopus.com/pages/publications/4043179277

U2 - 10.1103/PhysRevLett.83.1534

DO - 10.1103/PhysRevLett.83.1534

M3 - Article

SN - 0031-9007

VL - 83

SP - 1534

EP - 1537

JO - Physical Review Letters

JF - Physical Review Letters

IS - 8

ER -

Spin transfer in exclusive Λ production from ^→pp collisions at 3.67GeV/c

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