Česky
English
Committee for collaboration of Czech Republic

with Joint Institute for Nuclear Research in Dubna Login
Beam-Energy Dependence of Directed Flow of Lambda, (Lambda)over-bar, K-+/-, K-s(0), and phi in Au plus Au Collisions

Author
Adamczyk L. AGH University of Science and Technology, Poland
Lednický Richard, promovaný fyzik DrSc. dr. h. c. Institute of physics of the ASCR, JINR Dubna
et al.  STAR collaboration

Year
2018

Scientific journal
Physical Review Letters, 120 (6), 062301

Web


Abstract
Rapidity-odd directed-flow measurements at midrapidity are presented for Lambda, (Lambda) over bar, K-+/-, K-s(0), and phi at root s(NN) = 7.7, 11.5, 14.5, 19.6, 27, 39, 62.4, and 200 GeV in Au + Au collisions recorded by the Solenoidal Tracker detector at the Relativistic Heavy Ion Collider. These measurements greatly expand the scope of data available to constrain models with differing prescriptions for the equation of state of quantum chromodynamics. Results show good sensitivity for testing a picture where flow is assumed to be imposed before hadron formation and the observed particles are assumed to form via coalescence of constituent quarks. The pattern of departure from a coalescence-inspired sum rule can be a valuable new tool for probing the collision dynamics.

Cite article as:
L. Adamczyk, R. Lednický, . et al., "Beam-Energy Dependence of Directed Flow of Lambda, (Lambda)over-bar, K-+/-, K-s(0), and phi in Au plus Au Collisions", Physical Review Letters, 120 (6), 062301 (2018)