Brookhaven National Lab., Collider-Accelerator Department, Upton, NY 11973, USA
Here we describe diffractive measurements at RHIC in proton+proton collisions with a special optics run of β*~21 m at STAR, at the center-of-mass energy GeV during the the RHIC 2009 run. We present published results of single spin asymmetry as well as preliminary results on double spin asymmetries and central exclusive production.
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* Address correspondence to this author at the Brookhaven National Lab., Collider-Accelerator Department, Upton, NY 11973, USA; Tel: 1-631-344-4116; Fax: 1-631-344-5954; E-mail: firstname.lastname@example.org§Presented at the Low x workshop, May 30 - June 4 2013, Rehovot and Eilat, Israel.