期刊
PHYSICAL REVIEW LETTERS
卷 103, 期 25, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.103.251601
关键词
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资金
- Offices of NP and HEP within the U.S. DOE Office of Science
- U.S. NSF
- Sloan Foundation
- DFG cluster of excellence
- CNRS/IN2P3
- STFC and EPSRC of the United Kingdom
- FAPESP CNPq of Brazil
- Ministry of Ed. and Sci. of the Russian Federation
- NNSFC
- CAS
- MoST
- MoE of China
- GA and MSMT of the Czech Republic
- FOM and NOW of the Netherlands
- DAE
- DST
- CSIR of India
- Polish Ministry of Sci. and Higher Ed.
- Korea Research Foundation
- Ministry of Sci., Ed. and Sports of the Rep. Of Croatia
- Russian Ministry of Sci. and Tech
- RosAtom of Russia
- STFC [PP/F001061/1] Funding Source: UKRI
- Science and Technology Facilities Council [PP/F001061/1] Funding Source: researchfish
- Direct For Mathematical & Physical Scien
- Division Of Physics [0758018] Funding Source: National Science Foundation
Parity-odd domains, corresponding to nontrivial topological solutions of the QCD vacuum, might be created during relativistic heavy-ion collisions. These domains are predicted to lead to charge separation of quarks along the system's orbital momentum axis. We investigate a three-particle azimuthal correlator which is a P even observable, but directly sensitive to the charge separation effect. We report measurements of charged hadrons near center-of-mass rapidity with this observable in Au+Au and Cu+Cu collisions at s(NN)=200 GeV using the STAR detector. A signal consistent with several expectations from the theory is detected. We discuss possible contributions from other effects that are not related to parity violation.
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