Physics with Tagged Forward Protons at RHIC§

Kin Yip*
Brookhaven National Lab., Collider-Accelerator Department, Upton, NY 11973, USA

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© Kin Yip; Licensee Bentham Open.

open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.

* 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:
§ Presented at the Low x workshop, May 30 - June 4 2013, Rehovot and Eilat, Israel.


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.

PACS Number(s): 13.85.Dz and 13.88.+e.

Keywords:: Elastic scattering, spin asymmetry.