Direct Probes of Linearly Polarized Gluons inside Unpolarized Hadrons

Journal Article · Fri Apr 01 00:00:00 EDT 2011 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.106.132001· OSTI ID:21550254

Boer, Danieel ^[1]; Brodsky, Stanley J ^[2]; Mulders, Piet J ^[3]; Pisano, Cristian ^[4]

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1. Theory Group, KVI, University of Groningen, Zernikelaan 25, NL-9747 AA Groningen (Netherlands)
2. SLAC National Accelerator Laboratory, Stanford University, Stanford, California 94309 (United States)
3. Department of Physics and Astronomy, Vrije Universiteit Amsterdam, NL-1081 HV Amsterdam (Netherlands)
4. Dipartimento di Fisica, Universita di Cagliari, and INFN, Sezione di Cagliari, I-09042 Monserrato (Italy)

We show that linearly polarized gluons inside unpolarized hadrons can be directly probed in jet or heavy quark pair production in electron-hadron collisions. We discuss the simplest cos2{phi} asymmetries and estimate their maximal value, concluding that measurements of the unknown linearly polarized gluon distribution in the proton should be feasible in future Electron-Ion Collider or Large Hadron electron Collider experiments. Analogous asymmetries in hadron-hadron collisions suffer from factorization breaking contributions and would allow us to quantify the importance of initial- and final-state interactions.

• OSTI ID: 21550254
• Journal Information: Physical Review Letters, Vol. 106, Issue 13; Other Information: DOI: 10.1103/PhysRevLett.106.132001; (c) 2011 American Institute of Physics; ISSN 0031-9007
• Country of Publication: United States
• Language: English

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GLUONS
HADRON-HADRON INTERACTIONS
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T QUARKS
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