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Published September 2011 | Submitted + Published
Journal Article Open

Diagnosing spin at the LHC via vector boson fusion


We propose a new technique for determining the spin of new massive particles that might be discovered at the Large Hadron Collider. The method relies on pair-production of the new particles in a kinematic regime where the vector boson fusion production of color singlets is enhanced. For this regime, we show that the distribution of the leading jets as a function of their relative azimuthal angle can be used to distinguish spin-0 from spin-½ particles. We illustrate this effect by considering the particular cases of (i) strongly-interacting, stable particles and (ii) supersymmetric particles carrying color charge. We argue that this method should be applicable in a wide range of new physics scenarios.

Additional Information

© 2011 Published for SISSA by Springer. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. Received: March 28, 2011; Revised: September 6, 2011; Accepted: September 8, 2011; Published: September 20, 2011. We would like to thank the Aspen Center for Physics where a substantial portion of this work was carried out. We also thank J. Alwall, T. Han, M. Herndon, B. Mellado, D. Morrissey, T. Plehn, W. Smith, M. Spiropulu, J. Thaler, and L.-T. Wang for helpful discussions and N. Christensen for assistance with the Calchep package. This work was supported in part under Department of Energy contracts DE-FG03-92-ER40701 (MRB) and DE-FG02- 08ER41531 (MJRM) and by the Wisconsin Alumni Research Foundation (MRJM).

Attached Files

Published - Buckley2011p16504J_High_Energy_Phys.pdf

Submitted - 1008.5151v3.pdf


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