Abstract
Searching for exotic state particles and studying their properties have furthered our understanding of quantum chromodynamics (QCD). The f0(980) resonance is an exotic state with relatively high production rate in relativistic heavy-ion collisions, decaying primarily into ππ. Currently the structure and quark content of the f0(980) are unknown with several predictions from theory being a qq¯ state, a qqq¯q¯ state, a KK¯ molecule state, or a gluonium state. We report the first f0(980) elliptic flow (v2) measurement from 200 GeV Au+Au collisions at STAR. The transverse momentum dependence of v2 is examined and compared to those of other hadrons (baryons and mesons). The empirical number of constituent quark (NCQ) scaling is used to investigate the constituent quark content of f0(980), which may potentially address an important question in QCD.
Highlights
10 2 Experiment setup and data analysis11 The data reported here are from Au+Au collisions at a nucleon-nucleon center-of-mass energy of12 200 GeV, collected by the STAR experiment [14] at Brookhaven National Laboratory in 2011, 201413 and 2016
The main 14 subsystem used for the data analysis is the Time Projection Chamber (TPC) [15] with 2π azimuthal
Black line in the right panel represents a fit to results of other particles using a number of constituent quark (NCQ) scaling inspired function (Eq 2)
Summary
10 2 Experiment setup and data analysis11 The data reported here are from Au+Au collisions at a nucleon-nucleon center-of-mass energy of12 200 GeV, collected by the STAR experiment [14] at Brookhaven National Laboratory in 2011, 201413 and 2016. 11 The data reported here are from Au+Au collisions at a nucleon-nucleon center-of-mass energy of Ρ0 PRODUCTION IN CU+CU AND AU+AU COLLISIONS AT SN N = 200 GEV 18 pairs [16, 17] are used to subtract the combinatorial background after being normalized to unlikesign pairs in the invariant mass (minv) black range lbineeyinonFidgu1re.53.1G3 eisVth/ecs2um. The total fit function is given by:
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
