Measurement of the underlying event activity using charged particle jets in proton-proton collisions at 2.76 TeV - INSPIRE

DataBETA

Measurement of the underlying event activity using charged particle jets in proton-proton collisions at 2.76 TeV

CMS

Collaboration

2014

13 pages

Report number:

CMS-PAS-FSQ-12-025

Experiments:

CERN-LHC-CMS

View in:

CERN Document Server

reference search3 citations

Citations per year

Abstract:

A measurement of the underlying event (UE) activity in proton-proton collisions is performed using events with a leading charged particle jet produced at central pseudorapidity (

|\eta^{\rm{jet}}|<2

) and of transverse momentum in the range of

1

to

100

GeV. The analysis uses 0.3 nb

^{-1}

of integrated luminosity at the centre-of-mass energy of 2.76 TeV at the LHC by the CMS experiment. The UE activity is measured as a function of

p^{\rm{jet}}_{T}

in terms of the average multiplicity and scalar-

p_{T}

sum of charged particles with

|\eta|<2

and

p_{T}>0.5

GeV in the azimuthal region {\it transverse} to the leading jet direction. By dividing the {\it transverse} region into the minimum and maximum activity sides with respect to the leading jet, further information on the dynamics of the UE is obtained. The measurements are compared to previous results at 0.9 and 7 TeV and to predictions of several QCD-inspired models providing constraints of the parameters involved.

Note:

Preliminary results

Data
colliding beams
charged particle: jet
jet: transverse momentum
p p: scattering
charged particle: hadroproduction
underlying event
transverse momentum dependence
CERN LHC Coll
charged particle: multiplicity

References(26)

Figures(10)

[1]

Charged Jet Evolution and the Underlying Event in $p\bar{p}$ Collisions at 1.8 TeV

CDF

Collaboration

•

T. Affolder
(
- LBL, Berkeley
)

et al.

- Phys.Rev.D 65 (2002) 092002
•
DOI:
- 10.1103/PhysRevD.65.092002

[2]

The underlying event in hard interactions at the Tevatron $\bar{p}p$ collider

CDF

Collaboration

•

D. Acosta
(
- Florida U.
)

et al.

- Phys.Rev.D 70 (2004) 072002
•
e-Print:
- hep-ex/0404004
•
DOI:
- 10.1103/PhysRevD.70.072002

[3]

Studying the Underlying Event in Drell-Yan and High Transverse Momentum Jet Production at the Tevatron

CDF

Collaboration

•

T. Aaltonen
(
- Helsinki Inst. of Phys. and
- Helsinki U.
)

et al.

- Phys.Rev.D 82 (2010) 034001
•
e-Print:
- 1003.3146
•
DOI:
- 10.1103/PhysRevD.82.034001

[4]

Measurement of the Underlying Event Activity at the LHC with $\sqrt{s}= 7$ TeV and Comparison with $\sqrt{s} = 0.9$ TeV

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- JHEP 09 (2011) 109
•
e-Print:
- 1107.0330
•
DOI:
- 10.1007/JHEP09(2011)109

[5]

First Measurement of the Underlying Event Activity at the LHC with $\sqrt{s} = 0.9$ TeV

CMS

Collaboration

•

Vardan Khachatryan
(
- Yerevan Phys. Inst.
)

et al.

- Eur.Phys.J.C 70 (2010) 555-572
•
e-Print:
- 1006.2083
•
DOI:
- 10.1140/epjc/s10052-010-1453-9

[6]

Underlying Event measurements in $pp$ collisions at $\sqrt{s}=0.9$ and 7 TeV with the ALICE experiment at the LHC

ALICE

Collaboration

•

Betty Abelev
(
- LLNL, Livermore
)

et al.

- JHEP 07 (2012) 116
•
e-Print:
- 1112.2082
•
DOI:
- 10.1007/JHEP07(2012)116

[7]

Measurement of underlying event characteristics using charged particles in pp collisions at $\sqrt{s} = 900 GeV$ and 7 TeV with the ATLAS detector

ATLAS

Collaboration

•

Georges Aad
(
- Freiburg U.
)

et al.

- Phys.Rev.D 83 (2011) 112001
•
e-Print:
- 1012.0791
•
DOI:
- 10.1103/PhysRevD.83.112001

[8]

Measurement of the Underlying Event in the Drell-Yan Process in Proton-Proton Collisions at $\sqrt{s}=7$ TeV

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- Eur.Phys.J.C 72 (2012) 2080
•
e-Print:
- 1204.1411
•
DOI:
- 10.1140/epjc/s10052-012-2080-4

[9]

Multiple Parton-parton Interactions in an Impact Parameter Picture

- Phys.Lett.B 188 (1987) 149-154
•
DOI:
- 10.1016/0370-2693(87)90722-2

[10]

Transverse nucleon structure and diagnostics of hard parton-parton processes at LHC

- Phys.Rev.D 83 (2011) 054012
•
e-Print:
- 1009.2559
•
DOI:
- 10.1103/PhysRevD.83.054012

[11]

PYTHIA 6.4 Physics and Manual

Torbjorn Sjostrand
(
- Lund U., Dept. Theor. Phys.
)
,
Stephen Mrenna
(
- Fermilab
)
,
Peter Z. Skands
(
- Fermilab
)

- JHEP 05 (2006) 026
•
e-Print:
- hep-ph/0603175
•
DOI:
- 10.1088/1126-6708/2006/05/026

[12]

A Brief Introduction to PYTHIA 8.1

Torbjorn Sjostrand
(
- CERN and
- Lund U.
)
,
Stephen Mrenna
(
- Fermilab
)
,
Peter Z. Skands
(
- CERN and
- Fermilab
)

- Comput.Phys.Commun. 178 (2008) 852-867
•
e-Print:
- 0710.3820
•
DOI:
- 10.1016/j.cpc.2008.01.036

[13]

Herwig++ Physics and Manual

et al.

- Eur.Phys.J.C 58 (2008) 639-707
•
e-Print:
- 0803.0883
•
DOI:
- 10.1140/epjc/s10052-008-0798-9

[14]

Transverse-momentum-ordered showers and interleaved multiple interactions

- Eur.Phys.J.C 39 (2005) 129-154
•
e-Print:
- hep-ph/0408302
•
DOI:
- 10.1140/epjc/s2004-02084-y

[15]

Measurement of energy flow at large pseudorapidities in $pp$ collisions at $\sqrt{s} = 0.9$ and 7 TeV

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- JHEP 11 (2011) 148,
- JHEP 02 (2012) 055 (erratum)
•
e-Print:
- 1110.0211
•
DOI:
- 10.1007/JHEP11(2011)148

[16]

Underlying Event Tunes and Double Parton Scattering

CMS

Collaboration

[17]

Interleaved Parton Showers and Tuning Prospects

Richard Corke
(
- Lund U.
)
,
Torbjorn Sjostrand
(
- Lund U.
)

- JHEP 03 (2011) 032
•
e-Print:
- 1011.1759
•
DOI:
- 10.1007/JHEP03(2011)032

[18]

Constraining MPI models using $\sigma_{eff}$ and recent Tevatron and LHC Underlying Event data

Michael H. Seymour
(
- Manchester U.
)
,
Andrzej Siodmok
(
- Manchester U.
)

- JHEP 10 (2013) 113
•
e-Print:
- 1307.5015
•
DOI:
- 10.1007/JHEP10(2013)113

[19]

Description and performance of track and primary-vertex reconstruction with the CMS tracker

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- JINST 9 (2014) 10, P10009
•
e-Print:
- 1405.6569
•
DOI:
- 10.1088/1748-0221/9/10/P10009

[20]

The CMS Experiment at the CERN LHC

CMS

Collaboration

•

S. Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- JINST 3 (2008) S08004
•
DOI:
- 10.1088/1748-0221/3/08/S08004

[21]

Hard underlying event correction to inclusive jet cross-sections

Jon Pumplin
(
- Michigan State U.
)

- Phys.Rev.D 57 (1998) 5787-5792
•
e-Print:
- hep-ph/9708464
•
DOI:
- 10.1103/PhysRevD.57.5787

[22]

CMS Tracking Performance Results from Early LHC Operation

CMS

Collaboration

•

Vardan Khachatryan
(
- Yerevan Phys. Inst.
)

et al.

- Eur.Phys.J.C 70 (2010) 1165-1192
•
e-Print:
- 1007.1988
•
DOI:
- 10.1140/epjc/s10052-010-1491-3

[23]

Performance of Jet Reconstruction with Charged Tracks only

CMS

Collaboration

[24]

A Practical Seedless Infrared-Safe Cone jet algorithm

Gavin P. Salam
(
- Paris, LPTHE and
- Paris U., VI-VII
)
,
Gregory Soyez
(
- Paris, LPTHE and
- Paris U., VI-VII
)

- JHEP 05 (2007) 086
•
e-Print:
- 0704.0292
•
DOI:
- 10.1088/1126-6708/2007/05/086

[25]

The anti- $k_t$ jet clustering algorithm

- JHEP 04 (2008) 063
•
e-Print:
- 0802.1189
•
DOI:
- 10.1088/1126-6708/2008/04/063

1-25 of 26
1
2
25 / page