CERN Accelerating science

Article
Report number	arXiv:1105.2838 ; SLAC-PUB-15045 ; FERMILAB-PUB-11-842-A-PPD
Title	Simplified Models for LHC New Physics Searches
Author(s)	Alves, Daniele (SLAC) ; Arkani-Hamed, Nima (ed.) (Princeton, Inst. Advanced Study) ; Arora, Sanjay (ed.) (Rutgers U., Piscataway) ; Bai, Yang (ed.) (SLAC) ; Baumgart, Matthew (ed.) (Johns Hopkins U.) ; Berger, Joshua (ed.) (Cornell U., Phys. Dept.) ; Buckley, Matthew (ed.) (Fermilab) ; Butler, Bart (ed.) (SLAC) ; Chang, Spencer (ed.) (Oregon U. ; UC, Davis) ; Cheng, Hsin-Chia (ed.) (UC, Davis) ; Cheung, Clifford (ed.) (UC, Berkeley) ; Chivukula, R.Sekhar (ed.) (Michigan State U.) ; Cho, Won Sang (ed.) (Tokyo U.) ; Cotta, Randy (ed.) (SLAC) ; D'Alfonso, Mariarosaria (ed.) (UC, Santa Barbara) ; El Hedri, Sonia (ed.) (SLAC) ; Essig, Rouven (ed.) (SLAC) ; Evans, Jared A. (ed.) (UC, Davis) ; Fitzpatrick, Liam (ed.) (Boston U.) ; Fox, Patrick (ed.) (Fermilab) ; Franceschini, Roberto (ed.) (LPHE, Lausanne) ; Freitas, Ayres (ed.) (Pittsburgh U.) ; Gainer, James S. (ed.) (Argonne ; Northwestern U.) ; Gershtein, Yuri (ed.) (Rutgers U., Piscataway) ; Gray, Richard (ed.) (Rutgers U., Piscataway) ; Gregoire, Thomas (ed.) (Carleton U.) ; Gripaios, Ben (ed.) (CERN) ; Gunion, Jack (ed.) (UC, Davis) ; Han, Tao (ed.) (Wisconsin U., Madison) ; Haas, Andy (ed.) (SLAC) ; Hansson, Per (ed.) (SLAC) ; Hewett, JoAnne (ed.) (SLAC) ; Hits, Dmitry (ed.) (Rutgers U., Piscataway) ; Hubisz, Jay (ed.) (Syracuse U.) ; Izaguirre, Eder (ed.) (SLAC) ; Kaplan, Jared (ed.) (SLAC) ; Katz, Emanuel (ed.) (Boston U.) ; Kilic, Can (ed.) (Rutgers U., Piscataway) ; Kim, Hyung-Do (ed.) (Seoul Natl. U.) ; Kitano, Ryuichiro (ed.) (Tohoku U.) ; Koay, Sue Ann (ed.) (UC, Santa Barbara) ; Ko, Pyungwon (ed.) (Korea Inst. Advanced Study, Seoul) ; Krohn, David (ed.) (Harvard U., Phys. Dept.) ; Kuflik, Eric (ed.) (Michigan U.) ; Lewis, Ian (ed.) (Wisconsin U., Madison) ; Lisanti, Mariangela (ed.) (Princeton U.) ; Liu, Tao (ed.) (UC, Santa Barbara) ; Liu, Zhen (ed.) (Wisconsin U., Madison) ; Lu, Ran (ed.) (Michigan U.) ; Luty, Markus (ed.) (UC, Davis) ; Meade, Patrick (ed.) (SUNY, Stony Brook) ; Morrissey, David (ed.) (TRIUMF) ; Mrenna, Stephen (ed.) (Fermilab) ; Nojiri, Mihoko (ed.) (KEK, Tsukuba) ; Okui, Takemichi (ed.) (Florida State U.) ; Padhi, Sanjay (ed.) (UC, San Diego) ; Papucci, Michele (ed.) (LBL, Berkeley) ; Park, Michael (ed.) (Rutgers U., Piscataway) ; Park, Myeonghun (ed.) (Florida U.) ; Perelstein, Maxim (ed.) (Cornell U., Phys. Dept.) ; Peskin, Michael (ed.) (SLAC) ; Phalen, Daniel (ed.) (UC, Davis) ; Rehermann, Keith (ed.) (MIT) ; Rentala, Vikram (ed.) (UC, Irvine) ; Roy, Tuhin (ed.) (Washington U., Seattle) ; Ruderman, Joshua T. (ed.) (Princeton U.) ; Sanz, Veronica (ed.) (York U., Canada) ; Schmaltz, Martin (ed.) (Boston U.) ; Schnetzer, Stephen (ed.) (Rutgers U., Piscataway) ; Schuster, Philip (ed.) (Perimeter Inst. Theor. Phys. ; Princeton, Inst. Advanced Study) ; Schwaller, Pedro (ed.) (Illinois U., Chicago ; Argonne ; Zurich U.) ; Schwartz, Matthew D. (ed.) (Harvard U., Phys. Dept.) ; Schwartzman, Ariel (ed.) (SLAC) ; Shao, Jing (ed.) (Syracuse U.) ; Shelton, Jessie (ed.) (Yale U.) ; Shih, David (ed.) (Rutgers U., Piscataway) ; Shu, Jing (ed.) (Tokyo U.) ; Silverstein, Daniel (ed.) (SLAC) ; Simmons, Elizabeth (ed.) (Michigan State U.) ; Somalwar, Sunil (ed.) (Rutgers U., Piscataway) ; Spannowsky, Michael (ed.) (Oregon U.) ; Spethmann, Christian (ed.) (Boston U.) ; Strassler, Matthew (ed.) (Rutgers U., Piscataway) ; Su, Shufang (ed.) (Arizona U. ; UC, Irvine) ; Tait, Tim (ed.) (UC, Irvine) ; Thomas, Brooks (ed.) (Hawaii U.) ; Thomas, Scott (ed.) (Rutgers U., Piscataway) ; Toro, Natalia (ed.) (Perimeter Inst. Theor. Phys. ; Princeton, Inst. Advanced Study) ; Volansky, Tomer (ed.) (UC, Berkeley) ; Wacker, Jay (ed.) (SLAC) ; Waltenberger, Wolfgang (ed.) (Vienna, OAW) ; Yavin, Itay (ed.) (New York U., CCPP) ; Yu, Felix (ed.) (UC, Irvine) ; Zhao, Yue (ed.) (Rutgers U., Piscataway) ; Zurek, Kathryn (ed.) (Michigan U.)
Collaboration	LHC New Physics Working Group
Publication	2012
Imprint	17 May 2011
Number of pages	40
Note	Comments: 40 pages, 2 figures. This document is the official summary of results from "Topologies for Early LHC Searches" workshop (SLAC, September 2010). Supplementary material can be found at http://lhcnewphysics.org 40 pages, 2 figures. This document is the official summary of results from 'Topologies for Early LHC Searches' workshop (SLAC, September 2010). Supplementary material can be found at http://lhcnewphysics.org
In:	J. Phys. G 39 (2012) 105005
DOI	10.1088/0954-3899/39/10/105005
Subject category	Particle Physics - Phenomenology
Abstract	This document proposes a collection of simplified models relevant to the design of new-physics searches at the LHC and the characterization of their results. Both ATLAS and CMS have already presented some results in terms of simplified models, and we encourage them to continue and expand this effort, which supplements both signature-based results and benchmark model interpretations. A simplified model is defined by an effective Lagrangian describing the interactions of a small number of new particles. Simplified models can equally well be described by a small number of masses and cross-sections. These parameters are directly related to collider physics observables, making simplified models a particularly effective framework for evaluating searches and a useful starting point for characterizing positive signals of new physics. This document serves as an official summary of the results from the "Topologies for Early LHC Searches" workshop, held at SLAC in September of 2010, the purpose of which was to develop a set of representative models that can be used to cover all relevant phase space in experimental searches. Particular emphasis is placed on searches relevant for the first  50-500 pb-1 of data and those motivated by supersymmetric models. This note largely summarizes material posted at http://lhcnewphysics.org/, which includes simplified model definitions, Monte Carlo material, and supporting contacts within the theory community. We also comment on future developments that may be useful as more data is gathered and analyzed by the experiments.

Corresponding record in: Inspire