Journal
PHYSICAL REVIEW D
Volume 80, Issue 11, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.80.111102
Keywords
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Funding
- Offices of NP and HEP
- U. S. NSF
- Sloan Foundation
- DFG
- CNRS [CNRS/IN2P3]
- STFC
- EPSRC of the United Kingdom
- PESP CNPq of Brazil
- Ministry of Education and Science of the Russian Federation
- NNSFC
- CAS
- MoST
- MoE of China, GA
- MSMT of the Czech Republic
- FOM
- NOWof The Netherlands
- DAE
- DST
- CSIR of India
- Polish Ministry of Science and Higher Education
- Korea Research Foundation
- Ministry of Science, Education and Sports of the Republic Of Croatia
- Russian Ministry of Science and Technology
- RosAtom of Russia
- STFC [PP/F001061/1] Funding Source: UKRI
- Science and Technology Facilities Council [PP/F001061/1] Funding Source: researchfish
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The longitudinal spin transfer, D-LL, from high energy polarized protons to Lambda and Lambda hyperons has been measured for the first time in proton-proton collisions at s=200 GeV with the STAR detector at the Relativistic Heavy Ion Collider. The measurements cover pseudorapidity, eta, in the range |eta|< 1.2 and transverse momenta, p(T), up to 4 GeV/c. The longitudinal spin transfer is found to be D-LL=-0.03 +/- 0.13(stat)+/- 0.04(syst) for inclusive Lambda and D-LL=-0.12 +/- 0.08(stat)+/- 0.03(syst) for inclusive Lambda hyperons with <>=0.5 and << p(T)>>=3.7 GeV/c. The dependence on eta and p(T) is presented.
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