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CMS Forward and Small-x QCD Physics Results

Recent highlights:

Drell-Yan + jets production at low and high mass (pp at 7 TeV)   Minijet and leading track cross sections (pp at 8 TeV)  

Multidimensional Bose-Einstein correlations (pp at 2.76 and 7 TeV)   Total hadronic inelastic cross section (p-Pb at 5.02 TeV)  

Double parton scattering in W+jets (pp at 7 TeV):   Forward-central Jet Correlations (pp at 7 TeV)  

Inclusive hadron production (CMS+Totem, pp at 8 TeV):   4-jet production (pp at 7 TeV)  

Forward and low-pT jet cross sections (pp at 8 TeV)   Electroweak Z + forward-backward jets production (pp at 8 TeV)  

All public results:

The tables contain links to preliminary results (PAS) and published papers. Plots with good quality can be retrieved from the attached Twiki (twiki.gif) pages. If available, a link to a table with data points and information on a Rivet routine is also given.

If you have any question, don't hesitate to contact the FSQ PAG conveners (Gabor Veres & Jonathan Hollar):

Diffractive & exclusive production:

Analysis Public report Publication Plots & Tables Rivet Comment
Measurement of the total hadronic inelastic cross section in p-Pb at 5.02 TeV PAS-FSQ-13-006 FSQ-13-006 twiki.gif    
Measurement of pp diffraction cross sections at 7 TeV PAS-FSQ-12-005 FSQ-12-005 twiki.gif    
Study of exclusive two-photon production of WW pairs in pp collisions at 7 TeV, and constraints on anomalous quartic couplings PAS-FWD-12-010 FSQ-12-010 twiki.gif   JHEP 1307 (2013) 116
Search for central exclusive gamma pair production and observation of central exclusive electron pair production in pp collisions at sqrt(s) = 7 TeV PAS-FWD-11-004 FWD-11-004 twiki.gif - JHEP 1211 (2012) 080
Evidence for hard-diffractive dijet production in pp collisions at sqrt(s) = 7 TeV PAS-FWD-10-004 FWD-10-004 twiki.gif CMS_2012_I1184941 PRD 87 (2013) 012006
Exclusive photon-photon production of muon pairs in proton-proton collisions at sqrt(s) = 7 TeV PAS-FWD-10-005 FWD-10-005 twiki.gif CMS_2011_I954992 JHEP 01 (2012) 052
Forward energy flow, central track multiplicities and large rapidity gaps in W and Z boson events at 7 TeV pp collisions PAS-FWD-10-008 DP-2011-001 FWD-10-008 - - Eur. Phys. J. C72 (2012) 1839
Observation of diffraction in proton-proton collisions at the LHC PAS-FWD-10-007 PAS-FWD-10-001 - - - -

Forward jets & small-x QCD physics studies:

Analysis Public report Publication Plots & Tables Rivet Comment
Leading charged particle and leading jet cross sections at small transverse momenta in pp collisions at sqrts = 8 TeV PAS-FSQ-12-032   twiki.gif    
Drell-Yan + jets cross sections at low and high invariant masses in pp collisions at 7 TeV PAS-FSQ-13-003   twiki.gif    
Forward-central Jet Correlations at sqrt(s) = 7 TeV PAS-FSQ-12-008   twiki.gif    
Measurement of pure electroweak production of a Z boson in association with forward/backward jets in proton-proton collisions at s1/2=8 TeV PAS-FSQ-12-035 - twiki.gif -  
Measurement of Low pT Jet Cross Sections in proton-proton Collisions at √s = 8 TeV PAS-FSQ-12-031   twiki.gif    
Measurement of four-jet production in proton-proton collisions at sqrt(s)=7 TeV PAS-FSQ-12-013   twiki.gif CMS_2013_I1273574 Phys.Rev. D89 (2014) 092010
Inclusive hadron production (CMS+Totem) in pp at 8 TeV PAS-FSQ-12-026   twiki.gif CMSTOTEM_2014_1294140 Submitted to EPJC
Mueller-Navelet dijet azimuthal decorrelations in p-p at 7 TeV PAS-FSQ-12-002   twiki.gif    
Measurement of the electroweak production cross section of the Z boson with two forward-backward jets in pp collisions at sqrt(s) = 7 TeV PAS-FSQ-12-019 - twiki.gif - JHEP 10 (2013) 101
Measurement of inclusive and exclusive dijet production ratio at large rapidity intervals at sqrt(s) = 7 TeV PAS-FWD-10-014 FWD-10-014 twiki.gif CMS_2012_I1102908 EPJC 72 (2012) 2216;
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 PAS-FWD-10-003 PAS-FWD-10-006 FWD-11-002 twiki.gif CMS_2012_I1087342 JHEP 1206 (2012) 036
Measurement of energy flow at large pseudorapidities in pp collisions at sqrt(s) = 0.9 and 7 TeV PAS-FWD-10-011 PAS-FWD-10-002 FWD-10-011 - CMS_2011_S9215166 JHEP 11 (2011) 148

Multi-Parton Interactions (MPI), Underlying Event (UE) & soft QCD studies:

For comparisons with more recent Monte Carlo tunes, see PAS-GEN-14-001

Analysis Public report Publication Plots & Tables Rivet Comment
Multidimensional analysis of Bose-Einstein correlations in p-p collisions at 2.76 and 7 TeV PAS-FSQ-13-002 FSQ-13-002 twiki.gif  
Underlying event, b-quark fragmentation and hadronization properties in tbart events TOP-13-007 TOP-13-007 twiki.gif   Analysis actually belongs to TOP not FSQ group
Properties of jets and underlying event as a function of particle multiplicity in p-p collisions at sqrt(s) = 7 TeV PAS-FSQ-12-022 FSQ-12-022 twiki.gif CMS_2013_I1261026 Eur.Phys.J. C73 (2013) 2674
Study of double parton scattering using W + 2-jet events in proton-proton collisions at sqrt(s) = 7 TeV PAS-FSQ-12-028 FSQ-12-028 twiki.gif CMS_2013_I1272853 JHEP 03 (2014) 032
Study of the underlying event at forward rapidity in proton-proton collisions at the LHC PAS-FWD-11-003 FWD-11-003 twiki.gif CMS_2012_PAS_FWD_11_003 JHEP 04 (2013) 072
Measurement of the Underlying Event Activity using Leading Tracks in pp at 7 TeV PAS-FSQ-12-020 - twiki.gif - -
Measurement of the Underlying Event Activity with the Jet Area/Median Approach at 0.9,7 TeV PAS-QCD-10-005 QCD-10-021     JHEP 08(2012)130
Measurement of strange particle production in underlying events in proton-proton collisions at the LHC PAS-QCD-11-010 - twiki.gif CMS_QCD_11_010 Phys.Rev. D88 (2013) 052001
Spectra of charged pions, kaons, protons in pp collisions at sqrt(s) = 0.9, 2.76 and 7 TeV identified via tracker energy loss PAS-FSQ-12-014 FSQ-12-014 twiki.gif Compressed Zip archive - Eur. Phys. J. C72 (2012) 2164
Measurement of the Underlying Event Activity in the Drell-Yan process in proton-proton collisions at sqrt(s) = 7 TeV PAS-QCD-10-040 QCD-11-012 twiki.gif CMS_QCD_11_012 Eur. Phys. J. C 72 (2012) 2080
Measurement of the inelastic pp cross section at sqrt(s) = 7 TeV via pile-up event counting & single-side triggered events PAS-FWD-11-001 (PAS-QCD-11-002) - twiki.gif ( twiki.gif ) CMS_2012_I1193338 PLB 722 (2013) 5
Pre-2012 results:

Pseudorapidity distributions of charged particles in pp collisions at sqrt(s)= 7~TeV with at least one central charged particle PAS-QCD-10-024 - twiki.gif CMS_QCD_10_024 -
Charged particle transverse momentum spectra in pp collisions at sqrt(s) = 0.9 and 7 TeV PAS-QCD-10-008 QCD-10-008 twiki.gif - JHEP 08 (2011) 086
Observation of Long-Range, Near-Side Angular Correlations in Proton-Proton Collisions at the LHC PAS-QCD-10-002 QCD-10-002 twiki.gif txt.gif - JHEP 09 (2010) 091
First measurement of Hadronic Event Shapes in pp Collisions at 7 TeV PAS-QCD-10-013 QCD-10-013 twiki.gif CMS_2011_S8957746 Phys. Lett. B699 (2011) 48
Measurement of the Underlying Event Activity at the LHC with sqrt(s) = 7 TeV and comparison with sqrt(s) = 0.9 TeV PAS-QCD-10-010 QCD-10-010 twiki.gif html.gif CMS_2011_S9120041 JHEP 09 (2011) 109
Strange Particle Production in pp collisions at sqrt(s) = 0.9 and 7 TeV PAS-QCD-10-007 QCD-10-007 twiki.gif CMS_2011_S8978280 JHEP 05 (2011) 064
Charged particle multiplicities in pp interactions at sqrt(s) = 0.9, 2.36, and 7.0 TeV PAS-QCD-10-004 QCD-10-004 twiki.gif html.gif CMS_2011_S8884919 JHEP 01 (2011) 079
First Measurement of the Underlying Event Activity at the LHC with sqrt(s) = 0.9 TeV PAS-QCD-10-001 QCD-10-001 html.gif - Eur. Phys. J. C70 (2010) 555
Transverse-momentum and pseudorapidity distributions of charged hadrons in pp collisions at sqrt(s)= 7 TeV - QCD-10-006 twiki.gif html.gif CMS_2010_S8656010 Phys. Rev. Lett. 105 (2010) 022002
Measurement of Bose-Einstein correlations in pp collisions at sqrt(s) = 0.9 and 7 TeV - QCD-10-023 twiki.gif - JHEP 05 (2011) 029
First Measurement of Bose-Einstein Correlations in proton-proton Collisions at sqrt(s) =0.9 and 2.36 TeV at the LHC PAS-QCD-10-003 QCD-10-003 twiki.gif - Phys. Rev. Lett. 105 (2010) 032001
Transverse momentum and pseudorapidity distributions of charged hadrons in pp collisions at sqrt(s) = 0.9 and 2.36 TeV - QCD-09-010 twiki.gif html.gif CMS_2010_S8547297 JHEP 02 (2010) 041

Public event display DP notes:

Type of events Public DP note
CASTOR-TOTEM event display: electron and charged hadron candidates DP 2014/002
CMS-TOTEM event display: high-pT jets with two leading protons DP 2013/004
Central high-pT jet production during low pile-up, high β∗ run at s√=8TeV DP 2013/006
Event displays of W and Z Bosons with Large Rapidity Gaps DP 2011/001
Event displays of diffractive dijets at 7 TeV DP 2010/036
Event display of exclusive dimuons at 7 TeV DP 2010/035
Forward Jets in proton-proton Collisions at s√=7~TeV in CMS DP 2010/026

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Topic revision: r83 - 2014-09-12 - JonathanHollar
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