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collision and the unexplored landscape of the physics studied. STAR therefore consists of several types of detectors, each specializing in detecting certain types of particles or characterizing their motion. These detectors work together in an advanced data acquisition and subsequent physics analysis that allows definitive statements to be made about the collision.
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deals with general issues that concern the collaboration. Examples include the organization and governance of the
Collaboration, adoption of bylaws and amendments thereto, the policy on admission of new members institutions to the Collaboration, and Policies for the Publication and Presentation of STAR Results.
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Unlike other physics experiments where a theoretical prediction can be tested directly by a single measurement, STAR must make use of a variety of simultaneous studies in order to draw strong conclusions about the QGP. This is due both to the complexity of the system formed in the high-energy nuclear
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The governance of STAR is via two branches: the institutional
Council which is run by a Chairperson elected from the Council ranks, and elected Spokesperson(s) and their management team. The Spokesperson(s) represent the Collaboration in scientific, technical, and managerial concerns. The Council
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The term of the office of the
Council Chair is nominally two years. The Council elects, a Spokesperson or a team of two Spokespersons who then serve at the discretion of the Council. The normal term of office for the Spokesperson(s) is 3 years, and an individual is eligible to serve at most two
79:, such as protons and neutrons. Collisions of heavy nuclei at sufficiently high energies allow physicists to study whether quarks and gluons become deconfined at high densities, and if so, what the properties of this matter (i.e. quark–gluon plasma) are.
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The elected
Spokesperson(s) and their team of Deputies, and the Council Chairs of STAR are listed below. The Institute listed indicates the institute the person was at when they held the position.
43:(QGP), a state of matter believed to exist at sufficiently high energy densities. Detecting and understanding the QGP allows physicists to understand better the Universe in the seconds after the
63:, the expanding matter was so hot and dense that protons and neutrons could not exist. Instead, the early universe comprised a plasma of
274:; et al. (STAR Collaboration) (2004). "An update from STAR—using strangeness to probe relativistic heavy ion collisions".
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Deputies : Carl
Gagliardi (Texas A&M), Hans Georg Ritter (LBNL), Helen Caines (Yale) (2007 - 2008)
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In particular, STAR studies the collective expansion of the hot quark-gluon matter, such as the
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The primary scientific objective of STAR is to study the formation and characteristics of the
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Deputies : Rene
Bellwied (Wayne State) (2001-2002), Tim Hallman (BNL) (1999-2000)
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Deputies : Helen Caines (Yale), Renee Fatemi (UTK), Ernst
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2023-present Spokespeople : Frank Geurts (Rice), Lijuan Ruan (BNL)
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2017–2020 Spokespeople : Helen Caines (Yale), Zhangbu Xu (BNL)
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Deputies : Jim Thomas (LBNL), Steven Vigdor (Indiana)
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Deputies: ShinIchi Esumi (Tsukuba), Qinghua Xu (Shandong)
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Deputies: Kenneth Barish (UC Riverside), Xin Dong (LBNL)
276:Journal of Physics G: Nuclear and Particle Physics
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218:2021–present : Jana Bielcikova (NPI, CAS)
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230:2005–2008 : Hank Crawford (UC Berkeley)
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166:(VECC/NISER), Scott Wissink (Indiana)
111:consecutive terms as Spokesperson(s).
221:2016–2021 : Olga Evdokimov (UIC)
131:2020–2023 Spokespeople :
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233:2003–2005 : Bill Christie (BNL)
227:2009–2014 : Gary Westfall (MSU)
174:Deputies : James Dunlop (BNL),
162:Deputies: James Dunlop (BNL),
191:2002–2005 : Tim Hallman (BNL)
183:2005–2008 : Tim Hallman (BNL)
224:2014–2016 : Huan Huang (UCLA)
151:2014–2017 : Zhangbu Xu (BNL)
59:In the immediate aftermath of the
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328:STAR Lite, education and outreach
236:2000–2003 : Jay Marx (LBNL)
30:Relativistic Heavy Ion Collider
159:2011–2014 : Nu Xu (LBNL)
34:Brookhaven National Laboratory
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92:macroscopic quantum phenomena
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135:(Yale), Lijuan Ruan (BNL)
171:2008–2011: Nu Xu (LBNL)
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