Measurement of the underlying event activity using charged-particle jets in proton-proton collisions at $\sqrt{s}$ = 2.76 TeV

Khachatryan, V.

doi:10.1007/JHEP09(2015)137

Title: Measurement of the underlying event activity using charged-particle jets in proton-proton collisions at $$\sqrt{s}$$ = 2.76 TeV

Journal Article · Mon Sep 21 04:00:00 UTC 2015 · Journal of High Energy Physics (Online)

DOI: https://doi.org/10.1007/JHEP09(2015)137 · OSTI ID:1221321

Khachatryan, V. ^[1]

Yerevan Physics Inst. (YerPhI), Yerevan (Armenia). et al.

A measurement of the underlying event (UE) activity in proton-proton collisions is performed using events with charged-particle jets produced in the central pseudorapidity region (|η^jet| < 2) and with transverse momentum 1 ≤ p_T ^jet < 100 GeV. The analysis uses a data sample collected at a centre-of-mass energy of 2.76 TeV with the CMS experiment at the LHC. The UE activity is measured as a function of p_T^jet in terms of the average multiplicity and scalar sum of transverse momenta (p_T) of charged particles, with |η| < 2 and p_T > 0.5 GeV, in the azimuthal region transverse to the highest p_T jet direction. By further dividing the transverse region into two regions of smaller and larger activity, various components of the UE activity are separated. As a result, the measurements are compared to previous results at 0.9 and 7 TeV, and to predictions of several Monte Carlo event generators, providing constraints on the modelling of the UE dynamics

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Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)

Contributing Organization:: CMS Collaboration

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 1221321

Report Number(s):: FERMILAB-PUB--15-326-CMS; CERN-PH-EP--2015-176; CMS-FSQ--12-025; arXiv eprint number arXiv:1507.07229

Journal Information:: Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online); ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

References (23)

Interleaved parton showers and tuning prospects Corke, Richard; Sjöstrand, Torbjörn Journal of High Energy Physics, Vol. 2011, Issue 3 https://doi.org/10.1007/JHEP03(2011)032	journal	March 2011
Constraining MPI models using σ eff and recent Tevatron and LHC Underlying Event data Seymour, M. H.; Siódmok, A. Journal of High Energy Physics, Vol. 2013, Issue 10 https://doi.org/10.1007/JHEP10(2013)113	journal	October 2013
A multidimensional unfolding method based on Bayes' theorem D'Agostini, G. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 362, Issue 2-3 https://doi.org/10.1016/0168-9002(95)00274-X	journal	August 1995
Parton fragmentation and string dynamics Andersson, B.; Gustafson, G.; Ingelman, G. Physics Reports, Vol. 97, Issue 2-3 https://doi.org/10.1016/0370-1573(83)90080-7	journal	July 1983
Multiple parton-parton interactions in an impact parameter picture Sjöstrand, Torbjörn; Van Zijl, Maria Physics Letters B, Vol. 188, Issue 1 https://doi.org/10.1016/0370-2693(87)90722-2	journal	April 1987
A brief introduction to PYTHIA 8.1 Sjöstrand, Torbjörn; Mrenna, Stephen; Skands, Peter Computer Physics Communications, Vol. 178, Issue 11 https://doi.org/10.1016/j.cpc.2008.01.036	journal	June 2008
New Generation of Parton Distributions with Uncertainties from Global QCD Analysis Pumplin, Jonathan; Stump, Daniel Robert; Huston, Joey Journal of High Energy Physics, Vol. 2002, Issue 07 https://doi.org/10.1088/1126-6708/2002/07/012	journal	July 2002
PYTHIA 6.4 physics and manual Sjöstrand, Torbjörn; Mrenna, Stephen; Skands, Peter Journal of High Energy Physics, Vol. 2006, Issue 05 https://doi.org/10.1088/1126-6708/2006/05/026	journal	May 2006
A practical seedless infrared-safe cone jet algorithm Salam, Gavin P.; Soyez, Grégory Journal of High Energy Physics, Vol. 2007, Issue 05 https://doi.org/10.1088/1126-6708/2007/05/086	journal	May 2007
The anti- k _t jet clustering algorithm Cacciari, Matteo; Salam, Gavin P.; Soyez, Gregory Journal of High Energy Physics, Vol. 2008, Issue 04 https://doi.org/10.1088/1126-6708/2008/04/063	journal	April 2008
Description and performance of track and primary-vertex reconstruction with the CMS tracker Collaboration, The CMS Journal of Instrumentation, Vol. 9, Issue 10 https://doi.org/10.1088/1748-0221/9/10/P10009	journal	October 2014
Charged jet evolution and the underlying event in proton-antiproton collisions at 1.8 TeV Affolder, T.; Akimoto, H.; Akopian, A. Physical Review D, Vol. 65, Issue 9 https://doi.org/10.1103/PhysRevD.65.092002	journal	April 2002
Underlying event in hard interactions at the Fermilab Tevatron p ¯ p collider Acosta, D.; Affolder, T.; Albrow, M. G. Physical Review D, Vol. 70, Issue 7 https://doi.org/10.1103/PhysRevD.70.072002	journal	October 2004
Studying the underlying event in Drell-Yan and high transverse momentum jet production at the Tevatron Aaltonen, T.; Adelman, J.; Álvarez González, B. Physical Review D, Vol. 82, Issue 3 https://doi.org/10.1103/PhysRevD.82.034001	journal	August 2010
Measurement of underlying event characteristics using charged particles in p p collisions at s = 900 GeV and 7 TeV with the ATLAS detector Aad, G.; Abbott, B.; Abdallah, J. Physical Review D, Vol. 83, Issue 11 https://doi.org/10.1103/PhysRevD.83.112001	journal	May 2011
Geant4 developments and applications Allison, J.; Amako, K.; Apostolakis, J. IEEE Transactions on Nuclear Science, Vol. 53, Issue 1 https://doi.org/10.1109/TNS.2006.869826	journal	February 2006
Herwig++ physics and manual Bähr, Manuel; Gieseke, Stefan; Gigg, Martyn A. The European Physical Journal C, Vol. 58, Issue 4 https://doi.org/10.1140/epjc/s10052-008-0798-9	journal	November 2008
First measurement of the underlying event activity at the LHC with $\sqrt{s} = 0.9$ TeV Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A. The European Physical Journal C, Vol. 70, Issue 3 https://doi.org/10.1140/epjc/s10052-010-1453-9	journal	November 2010
CMS tracking performance results from early LHC operation Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A. The European Physical Journal C, Vol. 70, Issue 4 https://doi.org/10.1140/epjc/s10052-010-1491-3	journal	November 2010
Measurement of the underlying event in the Drell–Yan process in proton–proton collisions at $\sqrt{s} = 7~\mbox{TeV}$ Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M. The European Physical Journal C, Vol. 72, Issue 9 https://doi.org/10.1140/epjc/s10052-012-2080-4	journal	September 2012
Transverse-momentum-ordered showers and interleaved multiple interactions Sjöstrand, T.; Skands, P. Z. The European Physical Journal C, Vol. 39, Issue 2 https://doi.org/10.1140/epjc/s2004-02084-y	journal	February 2005
CMS tracking performance results from early LHC operation Collaboration, Cms; Khachatryan, Vardan; Caminada, Lea ETH Zurich https://doi.org/10.3929/ethz-b-000028770	text	January 2010
CMS tracking performance results from early LHC operation Collaboration, Cms; Khachatryan, V.; Aguiló, E. Springer https://doi.org/10.5167/uzh-45804	text	January 2010

Cited By (4)

Theoretical Framework Rabbertz, Klaus Springer Tracts in Modern Physics https://doi.org/10.1007/978-3-319-42115-5_2	book	October 2016
Probing color reconnection with underlying event observables at the LHC energies Ortiz, Antonio; Palomo, Lizardo Valencia Physical Review D, Vol. 99, Issue 3 https://doi.org/10.1103/physrevd.99.034027	journal	February 2019
Event generator tunes obtained from underlying event and multiparton scattering measurements Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A. The European Physical Journal C, Vol. 76, Issue 3 https://doi.org/10.1140/epjc/s10052-016-3988-x	journal	March 2016
Event generator tunes obtained from underlying event and multiparton scattering measurements Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A. Springer Verlag https://doi.org/10.5445/ir/1000053991	text	January 2016

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"Table 1" of "Measurement of the underlying event activity using charged-particle jets in proton-proton collisions at sqrt(s) = 2.76 TeV" Collaboration, Cms https://doi.org/10.17182/HEPDATA.69365.V1/T1 The current record is supplemented by this dataset	dataset	January 2015
"Table 2" of "Measurement of the underlying event activity using charged-particle jets in proton-proton collisions at sqrt(s) = 2.76 TeV" Collaboration, Cms https://doi.org/10.17182/HEPDATA.69365.V1/T2 The current record is supplemented by this dataset	dataset	January 2015
"Table 7" of "Measurement of the underlying event activity using charged-particle jets in proton-proton collisions at sqrt(s) = 2.76 TeV" Collaboration, Cms https://doi.org/10.17182/HEPDATA.69365.V1/T7 The current record is supplemented by this dataset	dataset	January 2015
"Table 8" of "Measurement of the underlying event activity using charged-particle jets in proton-proton collisions at sqrt(s) = 2.76 TeV" Collaboration, Cms https://doi.org/10.17182/HEPDATA.69365.V1/T8 The current record is supplemented by this dataset	dataset	January 2015
Measurement of the underlying event activity using charged-particle jets in proton-proton collisions at sqrt(s) = 2.76 TeV [Supplemental Data] Khachatryan, Vardan; Sirunyan, Albert M.; Tumasyan, Armen https://doi.org/10.17182/hepdata.69365 The current record is supplemented by this dataset	dataset	September 2015
Measurement of the underlying event activity using charged-particle jets in proton-proton collisions at sqrt(s) = 2.76 TeV [Supplementary Data] Khachatryan, Vardan; Sirunyan, Albert M.; Tumasyan, Armen https://doi.org/10.17182/hepdata.69365.v1 The current record is supplemented by this dataset	dataset	September 2015
"Table 3" of "Measurement of the underlying event activity using charged-particle jets in proton-proton collisions at sqrt(s) = 2.76 TeV" Collaboration, Cms https://doi.org/10.17182/hepdata.69365.v1/t3 The current record is supplemented by this dataset	dataset	January 2015
"Table 4" of "Measurement of the underlying event activity using charged-particle jets in proton-proton collisions at sqrt(s) = 2.76 TeV" Collaboration, Cms https://doi.org/10.17182/hepdata.69365.v1/t4 The current record is supplemented by this dataset	dataset	January 2015
"Table 5" of "Measurement of the underlying event activity using charged-particle jets in proton-proton collisions at sqrt(s) = 2.76 TeV" Collaboration, Cms https://doi.org/10.17182/hepdata.69365.v1/t5 The current record is supplemented by this dataset	dataset	January 2015
"Table 6" of "Measurement of the underlying event activity using charged-particle jets in proton-proton collisions at sqrt(s) = 2.76 TeV" Collaboration, Cms https://doi.org/10.17182/hepdata.69365.v1/t6 The current record is supplemented by this dataset	dataset	January 2015