Spin Transfer in Exclusive Lambda Production from pp Collisions at 3.67 GeV/c

Abstract

We report the first polarization transfer measurements for exclusive hyperon production reactions. The normal spin transfer coefficient DNN for pp -> p K+ Lambda is large and negative for forward Lambda production at a beam momentum of 3.67 GeV/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 Lambda production at much higher energies.

4 pages, including 4 figures. To be published in PRL

References in corpus (1)

• Hyperon polarization and single spin left-right asymmetry in inclusive production processes at high energies

Cited by in corpus (28)

• Close-to-threshold Meson Production in Hadronic Interactions
• Energy dependence of the Lambda/Sigma0 production cross section ratio in proton proton interactions
• Production of $\eta \prime$ Mesons in the $pp\to pp\eta \prime$ Reaction at 3.67 GeV/c
• Production of Lambda and Sigma^0 hyperons in proton-proton collisions
• Lambda hyperon production and polarization in collisions of p(3.5 GeV) + Nb
• Hadronic Probes of the Polarized Intrinsic Strangeness of the Nucleon
• DISTO data on Kpp
• Transverse spin transfer to $\Lambda$ and $\bar{\Lambda }$ hyperons in polarized proton-proton collisions at $\sqrt{s}=200\mathrm{GeV}$
• Analysis of Dilepton Invariant Mass Spectrum in C+C at 2 and 1 AGeV
• Determination of N* amplitudes from associated strangeness production in p+p collisions
• Associate K^0 production in p+p collisions at 3.5 GeV: The role of Delta(1232)++
• Hyperon production in near threshold nucleon-nucleon collisions
• Production Processes as a Tool to Study Parameterizations of Quark Confinement
• Rho^0 meson production in the pp ->pppi+pi- reaction at 3.67 GeV/c
• Possible methods for the determination of the $P$-parity of the ${\Theta }^{+}$-pentaquark in NN-collisions
• Spin structure of spin-1/2 baryon and spinless meson production amplitudes in photo and hadronic reactions
• Polarization observables in the processes $p+p\to {\Theta }^{+}+{\Sigma }^{+}$ and $n+p\to {\Theta }^{+}+{\Lambda }^0$, for any spin and parity of the ${\Theta }^{+}$-hyperon in the threshold region
• Hyperon-nucleon interactions in the $pp\to K^{+}\Lambda p$ reaction
• Associated strangeness production at threshold
• Spin physics with antiprotons
• The reaction $\Delta +N\to N+N+\varphi$ in ion-ion collisions
• Spin and Isospin Effects in the NN -> NK Lambda Reaction Near Threshold
• Threshold $J/\psi -$ production in nucleon-nucleon collisions
• Comparison of inclusive K+ production in proton-proton and proton-neutron collisions
• Strangeness production in proton-proton and proton-nucleus collisions
• Extracting the depolarization coefficient D_NN from data measured with a full acceptance detector
• Parametrizations of Quark Confinement in Production Processes
• Combined Partial Wave Analysis for the description of exclusive $p+p\to p+K^{+}+\Lambda$ production