| Thème(s) : |
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Physique/Physique des Hautes Energies - Expérience
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| Titre : |
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Measurement of the underlying event activity in pp collisions at sqrt(s) = 0.9 and 7 TeV with the novel jet-area/median approach |
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| Auteur : |
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S. Chatrchyan, D. Sillou1, M. Besancon2, S. Choudhury2, M. Dejardin2, D. Denegri2, B. Fabbro2, J.L. Faure2, F. Ferri2, S. Ganjour2, A. Givernaud2, P. Gras2, G. Hamel de Monchenault2, P. Jarry2, E. Locci2, J. Malcles2, L. Millischer2, J. Rander2, A. Rosowsky2, I. Shreyber2, M. Titov2, S. Baffioni3, F. Beaudette3, L. Benhabib3, L. Bianchini3, M. Bluj3, C. Broutin3, P. Busson3, C. Charlot3, N. Daci3, T. Dahms3, L. Dobrzynski3, R. Granier de Cassagnac3, M. Haguenauer3, P. Mine3, C. Mironov3, C. Ochando3, P. Paganini3, D. Sabes3, R. Salerno3, Y. Sirois3, C. Veelken3, A. Zabi3, J.-L. Agram4, J. Andrea4, D. Bloch4, D. Bodin4, J.-M. Brom4, M. Cardaci4, E.C. Chabert4, C. Collard4, E. Conte4, F. Drouhin4, C. Ferro4, J.-C. Fontaine4, D. Gele4, U. Goerlach4, P. Juillot4, M. Karim4, A.-C. Le Bihan4, P. Van Hove4, F. Fassi5, D. Mercier5, C. Baty6, S. Beauceron6, N. Beaupere6, M. Bedjidian6, O. Bondu6, G. Boudoul6, D. Boumediene6, H. Brun6, J. Chasserat6, R. Chierici6, D. Contardo6, P. Depasse6, H. El Mamouni6, A. Falkiewicz6, J. Fay6, S. Gascon6, M. Gouzevitch6, B. Ille6, T. Kurca6, T. Le Grand6, M. Lethuillier6, L. Mirabito6, S. Perries6, V. Sordini6, S. Tosi6, Y. Tschudi6, P. Verdier6, S. Viret6 |
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| Laboratoire : |
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| Résumé : |
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The first measurement of the charged component of the underlying event using the novel "jet-area/median" approach is presented for proton-proton collisions at centre-of-mass energies of 0.9 and 7 TeV. The data were recorded in 2010 with the CMS experiment at the LHC. A new observable, sensitive to soft particle production, is introduced and investigated inclusively and as a function of the event scale defined by the transverse momentum of the leading jet. Various phenomenological models are compared to data, with and without corrections for detector effects. None of the examined models describe the data satisfactorily. |
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| Collaboration/Projet : |
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CMS |
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| Type de publication : |
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Articles dans des revues avec comité de lecture |
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Date de publication ou d'écriture : |
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2012 |
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| Nom du périodique : |
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| Journal of High Energy Physics |
| Publisher |
Institute of Physics (IOP) |
| ISSN |
1126-6708 (eISSN : 1029-8479) |
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| Volume : |
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8 |
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| Page/Article : |
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130 |
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| Commentaire : |
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Submitted to the Journal of High Energy Physics ; see paper for full list of authors |
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