A measurement of the transverse polarization of Lambda-hyperons produced in inelastic pN-reactions at 450 GeV proton energy
- Fanti, V
- Lai, A
- Musa, L
- Nappi, A
- Setzu, MG
- Moore, R
- Munday, D
- Parker, M
- Takach, S
- White, T
- Barr, G
- Bocquet, G
- Bremer, J
- Ceccucci, A
- Cogan, J
- Cundy, D
- Doble, N
- Fischer, G
- Funk, W
- Gatignon, L
- Gianoli, A
- Gonidec, A
- Grafstrom, P
- Kubischta, W
- Marzulli, V
DOIAbstract
A study of the polarization of Λ hyperons produced in inelastic pN reactions induced by the 450 GeV proton beam from the CERN SPS has been performed with the NA48 detector. The Λ hyperons were detected at a fixed angle of 4.2 mrad in the momentum range from 50 GeV/c to 200 GeV/c. The polarization changes from -0.053 ± 0.034 to -0.298 ± 0.074 for a transverse momentum range of the Λ between 0.28 GeV/c and 0.86 GeV/c. The Λ̄ polarization is consistent with zero
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