Femtoscopy with Unlike-sign Kaons at STAR in 200 GeV Au+Au Collisions

Pion Interferometry in Auau Collisions at √ S Nn =200 Gev

We present preliminary results from a two-pion intensity interferometry analysis from Au+Au collisions at √ s NN =200 GeV measured in the STAR detector at RHIC. The dependence of the apparent pion source on multiplicity and transverse momentum are discussed and compared with preliminary results from d+Au and p+p collisions at the same beam energy.

Pion Femtoscopy in P+p Collisions at S=200 [square Root of S = 200] Gev

Systematic study of charged - pion and kaon femtoscopy in Au + Au collisions at √ sNN = 200 GeV

A. Adare,13 S. Afanasiev,31 C. Aidala,44,45 N. N. Ajitanand,64 Y. Akiba,58,59 H. Al-Bataineh,52 J. Alexander,64 M. Alfred,24 K. Aoki,33,36,58 N. Apadula,29,65 Y. Aramaki,12 H. Asano,36,58 E. T. Atomssa,37 R. Averbeck,65 T. C. Awes,54 B. Azmoun,7 V. Babintsev,25 M. Bai,6 G. Baksay,20 L. Baksay,20 N. S. Bandara,44 B. Bannier,65 K. N. Barish,8 B. Bassalleck,51 A. T. Basye,1 S. Bathe,5,8,59 V. Baub...

200 GeV IN STAR

We present measurements of the transverse momentum spectra for K 0 S , Λ , Ξ − and their antiparticles in p+p collisions at √ s = 200 GeV. The extracted mid-rapidity yields and pT are in agreement with previous p + ¯ p experiments while they have smaller statistical errors. We compare the measured particle spectra and pT values to predictions from the PYTHIA leading order pQCD model (v6.221) an...

Direct photons in d + Au collisions at √ s NN = 200 GeV with STAR

Results are presented of an ongoing analysis of direct photon production in √ sNN = 200 GeV deuteron-gold collisions (d+Au) with the STAR experiment at RHIC. A significant excess of direct photons is observed near mid-rapidity (0 < y < 1) and found to be consistent with next-to-leading order pQCD calculations including the contribution from fragmentation photons.