Inclusive jet and dijet production in polarized proton-proton collisions at [the square root of sigma] =200 GeV at RHIC

The inclusive jet cross section, the dijet cross section, and the dijet longitudinal double spin asymmetry ALL in polarized proton-proton collisions at [square root of sigma] = 200 GeV are measured with a data sample of 5.4 pbm collected with the STAR detector during RHIC Run-6. The inclusive cross section is measured as a function of jet transverse momentum PT in the range of 10 < PT < 60 GeV in the mid-rapidity region I[eta]I </= 0.8. The results are in agreement with QCD NLO predictions. The dijet cross section and the dijet ALL are measured as a function of dijet mass Mj in the range of 25 < Mjj < 100 GeV. The dijet cross section is in agreement with QCD NLO predictions. The dijet ALL is compared with QCD NLO predictions based on various parametrizations of polarized gluon distributions of the proton. The results are inconsistent with large gluon polarization and expected to lead to a constrain on the polarized gluon distribution.

Department dc:contributor.department

Massachusetts Institute of Technology. Dept. of Physics.

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2010

Author dc:creator

• Sakuma, Tai

Advisor dc:contributor.advisor

• Bernd Surrow.

• Physics.

Statement dc:rights

• M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/1721.1/63021

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/63021