Longitudinal spin transfer to Lambda and Lambda hyperons in polarized proton-proton collisions at s=200 GeV Academic Article uri icon

abstract

  • The longitudinal spin transfer, DLL, from high energy polarized protons to and hyperons has been measured for the first time in proton-proton collisions at s=200GeV with the STAR detector at the Relativistic Heavy Ion Collider. The measurements cover pseudorapidity, , in the range ||<1.2 and transverse momenta, pT, up to 4GeV/c. The longitudinal spin transfer is found to be DLL=-0.030.13(stat)0.04(syst) for inclusive and DLL=-0.120.08(stat)0.03(syst) for inclusive hyperons with =0.5 and pT=3.7GeV/c. The dependence on and pT is presented. 2009 The American Physical Society.

published proceedings

  • PHYSICAL REVIEW D

author list (cited authors)

  • Abelev, B. I., Aggarwal, M. M., Ahammed, Z., Alakhverdyants, A. V., Anderson, B. D., Arkhipkin, D., ... Zoulkarneeva, Y.

citation count

  • 12

complete list of authors

  • Abelev, BI||Aggarwal, MM||Ahammed, Z||Alakhverdyants, AV||Anderson, BD||Arkhipkin, D||Averichev, GS||Balewski, J||Barannikova, O||Barnby, LS||Baumgart, S||Beavis, DR||Bellwied, R||Benedosso, F||Betancourt, MJ||Betts, RR||Bhasin, A||Bhati, AK||Bichsel, H||Bielcik, J||Bielcikova, J||Biritz, B||Bland, LC||Bnzarov, I||Bonner, BE||Bouchet, J||Braidot, E||Brandin, AV||Bridgeman, A||Bruna, E||Bueltmann, S||Burton, TP||Cai, XZ||Caines, H||Sanchez, M Calderon de la Barca||Catu, O||Cebra, D||Cendejas, R||Cervantes, MC||Chajecki, Z||Chaloupka, P||Chattopadhyay, S||Chen, HF||Chen, JH||Chen, JY||Cheng, J||Cherney, M||Chikanian, A||Choi, KE||Christie, W||Chung, P||Clarke, RF||Codrington, MJM||Corliss, R||Cramer, JG||Crawford, HJ||Das, D||Dash, S||De Silva, LC||Debbe, RR||Dedovich, TG||DePhillips, M||Derevschikov, AA||de Souza, R Derradi||Didenko, L||Djawotho, P||Dogra, SM||Dong, X||Drachenberg, JL||Draper, JE||Dunlop, JC||Mazumdar, MR Dutta||Efimov, LG||Elhalhuli, E||Elnimr, M||Engelage, J||Eppley, G||Erazmus, B||Estienne,

publication date

  • December 2009