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Search for new physics in final states with a lepton and missing transverse energy in pp collisions at the LHC

S. Chatrchyan M. Besançon 1 S. Choudhury 1 F. Couderc 1 M. Dejardin 1 D. Denegri 1 B. Fabbro 1 J.L. Faure 1 F. Ferri 1 S. Ganjour 1 A. Givernaud 1 P. Gras 1 G. Hamel de Monchenault 1 P. Jarry 1 E. Locci 1 J. Malcles 1 L. Millischer 1 A. Nayak 1 J. Rander 1 A. Rosowsky 1 M. Titov 1 S. Baffioni 2 F. Beaudette 2 L. Benhabib 2 L. Bianchini 2 M. Bluj 2 Pierre Busson 2 C. Charlot 2 N. Daci 2 T. Dahms 2 M. Dalchenko 2 L. Dobrzynski 2 A. Florent 2 R. Granier de Cassagnac 2 M. Haguenauer 2 P. Mine 2 C. Mironov 2 I.N. Naranjo 2 M. Nguyen 2 C. Ochando 2 P. Paganini 2 D. Sabes 2 R. Salerno 2 y. Sirois 2 C. Veelken 2 A. Zabi 2 J.-L. Agram 3 J. Andrea 3 D. Bloch 3 D. Bodin 3 J.-M. Brom 3 M. Cardaci 3 E.C. Chabert 3 C. Collard 3 E. Conte 3 F. Drouhin 3 J.-C. Fontaine 3 D. Gele 3 U. Goerlach 3 P. Juillot 3 A.-C. Le Bihan 3 P. van Hove 3 S. Beauceron 4 N. Beaupere 4 O. Bondu 4 G. Boudoul 4 S. Brochet 4 J. Chasserat 4 R. Chierici 4 D. Contardo 4 P. Depasse 4 H. El Mamouni 4 J. Fay 4 S. Gascon 4 M. Gouzevitch 4 B. Ille 4 T. Kurca 4 M. Lethuillier 4 L. Mirabito 4 S. Perries 4 L. Sgandurra 4 V. Sordini 4 y. Tschudi 4 P. Verdier 4 S. Viret 4 
Abstract : This letter describes the search for an enhanced production rate of events with a charged lepton and a neutrino in high-energy pp collisions at the LHC. The analysis uses data collected with the CMS detector, with an integrated luminosity of 5.0 inverse femtobarns at sqrt(s) = 7 TeV, and a further 3.7 inverse femtobarns at sqrt(s) = 8 TeV. No evidence is found for an excess. The results are interpreted in terms of limits on a heavy charged gauge boson (W') in the sequential standard model, a split universal extra dimension model, and contact interactions in the helicity-non-conserving model. For the last, values of the binding energy below 10.5 (8.8) TeV in the electron (muon) channel are excluded at a 95% confidence level. Interpreting the ell nu final state in terms of a heavy W' with standard model couplings, masses below 2.90 TeV are excluded.
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Submitted on : Wednesday, February 13, 2013 - 7:57:09 AM
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S. Chatrchyan, M. Besançon, S. Choudhury, F. Couderc, M. Dejardin, et al.. Search for new physics in final states with a lepton and missing transverse energy in pp collisions at the LHC. Physical Review D, American Physical Society, 2013, 87, pp.072005. ⟨10.1103/PhysRevD.87.072005⟩. ⟨in2p3-00787799⟩

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