Spin Transfer in Inclusive 0 Production by Transversely Polarized Protons at 200GeV/ c

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 AN was found in inclusive 0 production with a 200GeV/c transversely polarized proton beam. The depolarization DNN in p+p 0 +X has been measured with the same beam over a wide xF range and at moderate pT. DNN reaches positive values of about 30% at high xF and pT1.0GeV/c. This result shows a sizable spin transfer from the incident polarized proton to the outgoing 0. 1997 The American Physical Society.

Bravar, A., Adams, D. L., Akchurin, N., Belikov, N. I., Bonner, B. E., Bystricky, J., ... Zanetti, A. M.

Bravar, A||Adams, DL||Akchurin, N||Belikov, NI||Bonner, BE||Bystricky, J||Corcoran, MD||Cossairt, JD||Cranshaw, J||Derevschikov, AA||En'yo, H||Funahashi, H||Goto, Y||Grachov, OA||Grosnick, DP||Hill, DA||Iijima, T||Imai, K||Itow, Y||Iwatani, K||Kuroda, K||Laghai, M||Lehar, F||de Lesquen, A||Lopiano, D||Luehring, FC||Maki, T||Makino, S||Masaike, A||Matulenko, Yu A||Meschanin, AP||Michalowicz, A||Miller, DH||Miyake, K||Nagamine, T||Nessi-Tedaldi, F||Nessi, M||Nguyen, C||Nurushev, SB||Ohashi, Y||Onel, Y||Patalakha, DI||Pauletta, G||Penzo, A||Rappazzo, GF||Read, AL||Roberts, JB||van Rossum, L||Rykov, VL||Saito, N||Salvato, G||Schiavon, P||Skeens, J||Solovyanov, VL||Spinka, H||Stanek, RW||Takashima, R||Takeutchi, F||Tamura, N||Underwood, DG||Vasiliev, AN||White, JL||Yamashita, S||Yokosawa, A||Yoshida, T||Zanetti, AM

Spin Transfer in Inclusive 0 Production by Transversely Polarized Protons at 200GeV/ c Academic Article