Navegar

Colección

Datos Estadísticas

Artículo

Estamos trabajando para incorporar este artículo al repositorio
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor

Abstract:

Double-differential dijet cross-sections measured in pp collisions at the LHC with a 7TeV centre-of-mass energy are presented as functions of dijet mass and half the rapidity separation of the two highest-pT jets. These measurements are obtained using data corresponding to an integrated luminosity of 4.5 fb −1 , recorded by the ATLAS detector in 2011. The data are corrected for detector effects so that cross-sections are presented at the particle level. Cross-sections are measured up to 5TeV dijet mass using jets reconstructed with the anti-k t algorithm for values of the jet radius parameter of 0.4 and 0.6. The cross-sections are compared with next-to-leading-order perturbative QCD calculations by NLOJet++ corrected to account for non-perturbative effects. Comparisons with POWHEG predictions, using a next-to-leading-order matrix element calculation interfaced to a partonshower Monte Carlo simulation, are also shown. Electroweak effects are accounted for in both cases. The quantitative comparison of data and theoretical predictions obtained using various parameterizations of the parton distribution functions is performed using a frequentist method. In general, good agreement with data is observed for the NLOJet++ theoretical predictions when using the CT10, NNPDF2.1 and MSTW 2008 PDF sets. Disagreement is observed when using the ABM11 and HERAPDF1.5 PDF sets for some ranges of dijet mass and half the rapidity separation. An example setting a lower limit on the compositeness scale for a model of contact interactions is presented, showing that the unfolded results can be used to constrain contributions to dijet production beyond that predicted by the Standard Model. © CERN.

Registro:

Documento: Artículo
Título:Measurement of dijet cross-sections in pp collisions at 7 TeV centre-of-mass energy using the ATLAS detector
Autor:The ATLAS collaboration et al.
Este artículo contiene 2952 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2952 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Palabras clave:Hadron-Hadron Scattering; Jet physics; Jets
Año:2014
Volumen:2014
Número:5
DOI: http://dx.doi.org/10.1007/JHEP05(2014)059
Título revista:Journal of High Energy Physics
Título revista abreviado:J. High Energy Phys.
ISSN:11266708
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2014_n5_p_TheATLAScollaboration

Referencias:

  • Evans, L., Bryant, P., LHC Machine (2008) JINST, 3. , [INSPIRE]
  • Aaltonen, T., Search for new particles decaying into dijets in proton-antiproton collisions at √s = 1.96TeV (2009) Phys. Rev. D, 79, p. 112002. , [0812.4036] [INSPIRE]
  • Abazov, V.M., Measurement of the dijet invariant mass cross section in p¯p collisions at √s = 1.96TeV (2010) Phys. Lett. B, 693, p. 531. , [1002.4594] [INSPIRE]
  • Measurement of the differential dijet production cross section in proton-proton collisions at √s = 7TeV (2011) Phys. Lett. B, 700, p. 187. , [1104.1693] [INSPIRE]
  • Measurement of inclusive jet and dijet production in pp collisions at √s = 7TeV using the ATLAS detector (2012) Phys. Rev. D, 86, p. 014022. , [1112.6297] [INSPIRE]
  • Measurements of differential jet cross sections in proton-proton collisions at √s = 7TeV with the CMS detector (2013) Phys. Rev. D, 87, p. 112002. , [1212.6660] [INSPIRE]
  • Lai, H.-L., New parton distributions for collider physics (2010) Phys. Rev. D, 82, p. 074024. , [1007.2241] [INSPIRE]
  • Malaescu, B., An Iterative, Dynamically Stabilized (IDS) Method of Data Unfolding, , 1106.3107[INSPIRE]
  • (2013) Jet Energy Scale and Its Systematic Uncertainty in Proton-Proton Collisions at P S=7Tev with ATLAS 2011 Data, , ATLAS-CONF-2013-004
  • Nagy, Z., Next-to-leading order calculation of three jet observables in hadron hadron collision (2003) Phys. Rev. D, 68, p. 094002. , [hep-ph/0307268] [INSPIRE]
  • Nason, P., A new method for combining NLO QCD with shower Monte Carlo algorithms (2004) JHEP, 11, p. 040. , [hep-ph/0409146] [INSPIRE]
  • Baur, U., Hinchliffe, I., Zeppenfeld, D., Excited Quark Production at Hadron Colliders (1987) Int. J. Mod. Phys. A, 2, p. 1285. , [INSPIRE]
  • Eichten, E., Lane, K.D., Peskin, M.E., New Tests for Quark and Lepton Substructure (1983) Phys. Rev. Lett, 50, p. 811. , [INSPIRE]
  • ATLAS search for new phenomena in dijet mass and angular distributions using pp collisions at √s = 7TeV (2013) JHEP, 1, p. 029. , [1210.1718] [INSPIRE]
  • Search for quark compositeness in dijet angular distributions from pp collisions at √s = 7TeV (2012) JHEP, 5, p. 55. , [1202.5535] [INSPIRE]
  • The Durham Hepdata Project, , http://hepdata.cedar.ac.uk/view/ins1268975
  • The ATLAS Experiment at the CERN Large Hadron Collider (2008) JINST, 3. , [INSPIRE]
  • Cacciari, M., Salam, G.P., Soyez, G., The anti-k(T) jet clustering algorithm (2008) JHEP, 4, p. 063. , [0802.1189] [INSPIRE]
  • Cacciari, M., Salam, G.P., Soyez, G., FastJet User Manual (2012) Eur. Phys. J. C, 72, p. 1896. , [1111.6097] [INSPIRE]
  • Buttar, C., Standard Model Handles and Candles Working Group: Tools and Jets Summary Report, , 0803.0678[INSPIRE]
  • Frixione, S., Ridolfi, G., Jet photoproduction at HERA (1997) Nucl. Phys. B, 507, p. 315. , [hep-ph/9707345] [INSPIRE]
  • Sjöstrand, T., Mrenna, S., Skands, P.Z., PYTHIA 6.4 Physics and Manual (2006) JHEP, 5, p. 026. , [hep-ph/0603175] [INSPIRE]
  • (2011) ATLAS Tunes of PYTHIA 6 and PYTHIA 8 for MC11, , ATL-PHYS-PUB-2011-009
  • Andersson, B., Gustafson, G., Semiclassical Models for Gluon Jets and Leptoproduction Based on the Massless Relativistic String (1980) Z. Phys. C, 3, p. 223. , [INSPIRE]
  • Sjöstrand, T., Mrenna, S., Skands, P.Z., A Brief Introduction to PYTHIA 8.1 (2008) Comput. Phys. Commun, 178, p. 852. , [0710.3820] [INSPIRE]
  • Corke, R., Sjöstrand, T., Interleaved Parton Showers and Tuning Prospects (2011) JHEP, 3, p. 032. , [1011.1759] [INSPIRE]
  • Sherstnev, A., Thorne, R.S., Different PDF Approximations Useful for LO Monte Carlo Generators, , 0807.2132[INSPIRE]
  • Bahr, M., HERWIG++ Physics and Manual (2008) Eur. Phys. J. C, 58, p. 639. , [0803.0883] [INSPIRE]
  • Gieseke, S., HERWIG++ 2.5 Release Note, , 1102.1672[INSPIRE]
  • Corcella, G., HERWIG 6: An Event generator for hadron emission reactions with interfering gluons (including supersymmetric processes) (2001) JHEP, 1, p. 010. , [hep-ph/0011363] [INSPIRE]
  • Gieseke, S., Rohr, C., Siodmok, A., Colour reconnections in HERWIG++ (2012) Eur. Phys. J. C, 72, p. 2225. , [1206.0041] [INSPIRE]
  • Webber, B.R., A QCD Model for Jet Fragmentation Including Soft Gluon Interference (1984) Nucl. Phys. B, 238, p. 492. , [INSPIRE]
  • Bahr, M., Gieseke, S., Seymour, M.H., Simulation of multiple partonic interactions in HERWIG++ (2008) JHEP, 7, p. 076. , [0803.3633] [INSPIRE]
  • Pumplin, J., New generation of parton distributions with uncertainties from global QCD analysis (2002) JHEP, 7, p. 012. , [hep-ph/0201195] [INSPIRE]
  • The ATLAS Simulation Infrastructure (2010) Eur. Phys. J. C, 70, p. 823. , [1005.4568] [INSPIRE]
  • Agostinelli, S., GEANT4: A simulation toolkit (2003) Nucl. Instrum. Meth. A, 506, p. 250. , [INSPIRE]
  • Carli, T., A posteriori inclusion of parton density functions in NLO QCD final-state calculations at hadron colliders: The APPLGRID Project (2010) Eur. Phys. J. C, 66, p. 503. , [0911.2985] [INSPIRE]
  • HERAPDF 1.5, H1prelim-10-142, Zeus-Prel-10-018, , http://www.desy.de/h1zeus/combinedresults/index.php?do=proton_structure
  • Measurement of the inclusive jet cross section in pp collisions at p s=2.76TeV and comparison to the inclusive jet cross section at p s=7TeV using the ATLAS detector (2013) Eur. Phys. J. C, 73, p. 2509. , [1304.4739] [INSPIRE]
  • Martin, A.D., Stirling, W.J., Thorne, R.S., Watt, G., Parton distributions for the LHC (2009) Eur. Phys. J. C, 63, p. 189. , [0901.0002] [INSPIRE]
  • Ball, R.D., A first unbiased global NLO determination of parton distributions and their uncertainties (2010) Nucl. Phys. B, 838, p. 136. , [1002.4407] [INSPIRE]
  • Forte, S., Laenen, E., Nason, P., Rojo, J., Heavy quarks in deep-inelastic scattering (2010) Nucl. Phys. B, 834, p. 116. , [1001.2312] [INSPIRE]
  • Ball, R.D., Parton distributions with LHC data (2013) Nucl. Phys. B, 867, p. 244. , [1207.1303] [INSPIRE]
  • Alekhin, S., Bluemlein, J., Moch, S.O., ABM11 PDFs and the cross section benchmarks in NNLO Pos(Ll2012)016, , [1302.1516] [INSPIRE]
  • Ellis, S.D., Kunszt, Z., Soper, D.E., Two jet production in hadron collisions at order α3s s in QCD (1992) Phys. Rev. Lett, 69, p. 1496. , [INSPIRE]
  • Frixione, S., Nason, P., Oleari, C., Matching NLO QCD computations with Parton Shower simulations: The POWHEG method (2007) JHEP, 11, p. 070. , [0709.2092] [INSPIRE]
  • Alioli, S., Nason, P., Oleari, C., Re, E., A general framework for implementing NLO calculations in shower Monte Carlo programs: The POWHEG BOX (2010) JHEP, 6, p. 043. , [1002.2581] [INSPIRE]
  • Nason, P., MINT: A Computer Program for Adaptive Monte Carlo Integration and Generation of Unweighted Distributions, , 0709.2085[INSPIRE]
  • Skands, P.Z., Tuning Monte Carlo Generators: The Perugia Tunes (2010) Phys. Rev. D, p. 074018. , [1005.3457] [INSPIRE]
  • Nason, P., Oleari, C., Generation Cuts and Born Suppression in POWHEG, , 1303.3922[INSPIRE]
  • Dittmaier, S., Huss, A., Speckner, C., Weak radiative corrections to dijet production at hadron colliders (2012) JHEP, 11, p. 095. , [1210.0438] [INSPIRE]
  • Lai, H.-L., Uncertainty induced by QCD coupling in the CTEQ global analysis of parton distributions (2010) Phys. Rev. D, 82, p. 054021. , [1004.4624] [INSPIRE]
  • Pumplin, J., Uncertainties of predictions from parton distribution functions. 2. The Hessian method (2001) Phys. Rev. D, 65, p. 014013. , [hep-ph/0101032] [INSPIRE]
  • Improved luminosity determination in pp collisions at √s = 7TeV using the ATLAS detector at the LHC (2013) Eur. Phys. J. C, 73, p. 2518. , [1302.4393] [INSPIRE]
  • Lendermann, V., Combining Triggers in HEP Data Analysis (2009) Nucl. Instrum. Meth. A, 604, p. 707. , [0901.4118] [INSPIRE]
  • Lampl, W., (2008) Calorimeter Clustering Algorithms: Description and Performance, , ATL-LARG-PUB-2008-002
  • (2009) Local Hadronic Calibration, , ATL-LARG-PUB-2009-001-2
  • (2012) Pile-Up Corrections for Jets from Proton-Proton Collisions at √s = 7 Tev in ATLAS in 2011, , ATLAS-CONF-2012-064
  • (2012) Selection of Jets Produced in Proton-Proton Collisions with the ATLAS Detector Using 2011 Data, , ATLAS-CONF-2012-020
  • Measurement of inclusive jet and dijet cross sections in proton-proton collisions at 7 TeV centre-of-mass energy with the ATLAS detector (2011) Eur. Phys. J. C, 71, p. 1512. , [1009.5908] [INSPIRE]
  • Hocker, A., Kartvelishvili, V., SVD approach to data unfolding (1996) Nucl. Instrum. Meth. A, 372, p. 469. , [hep-ph/9509307] [INSPIRE]
  • Jet energy measurement with the ATLAS detector in proton-proton collisions at √s = 7TeV (2013) Eur. Phys. J. C, 73, p. 2304. , [1112.6426] [INSPIRE]
  • Jet energy resolution in proton-proton collisions at √s = 7TeV recorded in 2010 with the ATLAS detector (2013) Eur. Phys. J. C, 73, p. 2306. , [1210.6210] [INSPIRE]
  • Bohm, G., (2010) Introduction to Statistics and Data Analysis for Physicists, , Verl. Dt. Elektronen-Synchrotron, Hamburg Germany
  • Read, A.L., Presentation of search results: The CLs technique (2002) J. Phys. G, 28, p. 2693. , [INSPIRE]
  • D’Agostini, G., On the use of the covariance matrix to fit correlated data (1994) Nucl. Instrum. Meth. A, 346, p. 306. , [INSPIRE]
  • Blobel, V., (2003) Some Comments on - 2 Minimization Applications, Econf C 030908, , http://www.slac.stanford.edu/econf/C030908/proceedings.html, MOET002
  • Botje, M., Error estimates on parton density distributions (2002) J. Phys. G, 28, p. 779. , [hep-ph/0110123] [INSPIRE]
  • Gao, J., Li, C.S., Wang, J., Zhu, H.X., Yuan, C.-P., Next-to-leading QCD effect to the quark compositeness search at the LHC (2011) Phys. Rev. Lett, 106, p. 142001. , [1101.4611] [INSPIRE]
  • Gao, J., CIJET: A program for computation of jet cross sections induced by quark contact interactions at hadron colliders (2013) Comput. Phys. Commun, 184, p. 2362. , [1301.7263] [INSPIRE]
  • Abe, F., Measurement of dijet angular distributions at CDF (1996) Phys. Rev. Lett, 77, p. 5336
  • Abazov, V.M., Measurement of dijet angular distributions at √s = 1.9 6-TeV and searches for quark compositeness and extra spatial dimensions (2009) Phys. Rev. Lett, 103, p. 191803. , [0906.4819] [INSPIRE]

Citas:

---------- APA ----------
(2014) . Measurement of dijet cross-sections in pp collisions at 7 TeV centre-of-mass energy using the ATLAS detector. Journal of High Energy Physics, 2014(5).
http://dx.doi.org/10.1007/JHEP05(2014)059
---------- CHICAGO ----------
The ATLAS collaboration. "Measurement of dijet cross-sections in pp collisions at 7 TeV centre-of-mass energy using the ATLAS detector" . Journal of High Energy Physics 2014, no. 5 (2014).
http://dx.doi.org/10.1007/JHEP05(2014)059
---------- MLA ----------
The ATLAS collaboration. "Measurement of dijet cross-sections in pp collisions at 7 TeV centre-of-mass energy using the ATLAS detector" . Journal of High Energy Physics, vol. 2014, no. 5, 2014.
http://dx.doi.org/10.1007/JHEP05(2014)059
---------- VANCOUVER ----------
The ATLAS collaboration. Measurement of dijet cross-sections in pp collisions at 7 TeV centre-of-mass energy using the ATLAS detector. J. High Energy Phys. 2014;2014(5).
http://dx.doi.org/10.1007/JHEP05(2014)059