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Measurement of the inclusive production cross sections for forward jets and for dijet events with one forward and one central jet in pp collisions at sqrt(s) = 7 TeV
Sillou D., Besancon M., Choudhury S., Dejardin M., Denegri D. et al
Journal of High Energy Physics 06 (2012) 036 - http://hal.in2p3.fr/in2p3-00666754
Physique/Physique des Hautes Energies - Expérience
Measurement of the inclusive production cross sections for forward jets and for dijet events with one forward and one central jet in pp collisions at sqrt(s) = 7 TeV
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, M. Marionneau2, L. Millischer2, J. Rander2, A. Rosowsky2, I. Shreyber2, M. Titov2, S. Baffioni3, F. Beaudette3, L. Benhabib3, L. Bianchini3, M. Bluj3, C. Broutin3, Pierre Busson ()3, C. Charlot3, N. Daci3, T. Dahms3, L. Dobrzynski3, S. Elgammal3, R. Granier de Cassagnac3, M. Haguenauer3, P. Mine3, C. Mironov3, C. Ochando3, P. Paganini3, D. Sabes3, R. Salerno3, Y. Sirois3, C. Thiebaux3, 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, S. Greder4, 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
1 :  LAPP - Laboratoire d'Annecy le Vieux de Physique des Particules
http://wwwlapp.in2p3.fr/
CNRS : UMR5814 – IN2P3 – Université de Savoie
9 Chemin de Bellevue - BP 110 - 74941 Annecy-le-Vieux CEDEX - France
France
2 :  IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers (ex DAPNIA)
CEA : DSM/IRFU
France
3 :  LLR - Laboratoire Leprince-Ringuet
http://polywww.in2p3.fr/
CNRS : UMR7638 – IN2P3 – Polytechnique - X
Route de Saclay - 91128 Palaiseau Cedex
France
4 :  DRS-IPHC - Département Recherches Subatomiques
CNRS : UMR7178 – IN2P3 – Université de Strasbourg
23 rue du Loess - BP28 67037 Strasbourg cedex 2
France
5 :  CC IN2P3 - Centre de Calcul de l'inst. national de phy. nucléaire et de phy. des particules
http://cc.in2p3.fr/
CNRS : USR6402 – IN2P3
12-14, boulevard Niels Bohr 69622 VILLEURBANNE CEDEX
France
6 :  IPNL - Institut de Physique Nucléaire de Lyon
http://www.ipnl.in2p3.fr/
CNRS : UMR5822 – IN2P3 – Université Claude Bernard - Lyon I (UCBL)
France
CMS
The inclusive production cross sections for forward jets, as well for jets in dijet events with at least one jet emitted at central and the other at forward pseudorapidities, are measured in the range of transverse momenta pt = 35-150 GeV/c in proton-proton collisions at sqrt(s) = 7 TeV by the CMS experiment at the LHC. Forward jets are measured within pseudorapidities 3.2<|eta|<4.7, and central jets within the |eta|<2.8 range. The double differential cross sections with respect to pt and eta are compared to predictions from three approaches in perturbative quantum chromodynamics: (i) next-to-leading-order calculations obtained with and without matching to parton-shower Monte Carlo simulations, (ii) PYTHIA and HERWIG parton-shower event generators with different tunes of parameters, and (iii) CASCADE and HEJ models, including different non-collinear corrections to standard single-parton radiation. The single-jet inclusive forward jet spectrum is well described by all models, but not all predictions are consistent with the spectra observed for the forward-central dijet events.
CMS

Articles dans des revues avec comité de lecture
2012
Journal of High Energy Physics
Publisher Institute of Physics (IOP)
ISSN 1126-6708 (eISSN : 1029-8479)
06
036

Submitted to the Journal of High Energy Physics - see paper for full list of authors
Lien vers le texte intégral : 
http://fr.arXiv.org/abs/1202.0704