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Super-razor and searches for sleptons and charginos at the LHC

Buckley, Matthew R. and Lykken, Joseph D. and Rogan, Christopher and Spiropulu, Maria (2014) Super-razor and searches for sleptons and charginos at the LHC. Physical Review D, 89 (5). Art. No. 055020. ISSN 0556-2821. http://resolver.caltech.edu/CaltechAUTHORS:20140516-125115553

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Abstract

Direct searches for electroweak pair production of new particles at the LHC are a difficult proposition, due to the large background and low signal cross sections. We demonstrate how these searches can be improved by a combination of new razor variables and shape analysis of signal and background kinematics. We assume that the pair-produced particles decay to charged leptons and missing energy, either directly or through a W boson. In both cases the final state is a pair of opposite sign leptons plus missing transverse energy. We estimate exclusion reach in terms of sleptons and charginos as realized in minimal supersymmetry. We compare this super-razor approach in detail to analyses based on other kinematic variables, showing how the super-razor uses more of the relevant kinematic information while achieving higher selection efficiency on signals, including cases with compressed spectra.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://arxiv.org/abs/1310.4827arXivWorking Paper
http://dx.doi.org/10.1103/PhysRevD.89.055020DOIArticle
http://journals.aps.org/prd/abstract/10.1103/PhysRevD.89.055020PublisherArticle
Additional Information:© 2014 American Physical Society. Received 11 November 2013; published 20 March 2014. We acknowledge helpful discussions with Paul Jackson, Maurizio Pierini, Chiu-Tien Yu, Javier Duarte and Avi Yagil. J. L. acknowledges the hospitality and support of the Theoretical Physics Group at SLAC. Fermilab is operated by Fermi Research Alliance, LLC, under Contract No. DEAC02- 07CH11359 with the U.S. Department of Energy. M. S. and C. R. are funded by the U.S. Department of Energy under Grant No. DE-FG02-92-ER40701 and acknowledge the support of the Weston Havens Foundation.
Group:CMS@Caltech
Funders:
Funding AgencyGrant Number
SLAC Theoretical Physics GroupUNSPECIFIED
Department of Energy (DOE)DE-AC02-07CH11359
Department of Energy (DOE)DE-FG02-92-ER40701
Weston Havens FoundationUNSPECIFIED
Classification Code:PACS: 14.80.Ly
Record Number:CaltechAUTHORS:20140516-125115553
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140516-125115553
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:45809
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:16 May 2014 20:03
Last Modified:16 May 2014 20:03

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