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

DISTO collaboration

Research output: Contribution to journalArticle

54 Citations (Scopus)

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 languageEnglish (US)
Pages (from-to)1534-1537
Number of pages4
JournalPhysical Review Letters
Volume83
Issue number8
DOIs
StatePublished - Jan 1 1999

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collisions
fragmentation
momentum
polarization
coefficients
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Spin transfer in exclusive Λ production from pp collisions at 3.67GeV/c . / DISTO collaboration.

In: Physical Review Letters, Vol. 83, No. 8, 01.01.1999, p. 1534-1537.

Research output: Contribution to journalArticle

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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.",
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 Mario 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",
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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, Mario

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 - 1999/1/1

Y1 - 1999/1/1

N2 - 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.

AB - 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.

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