Measurement of the cross-section for $Z \to e^+e^-$ production in $pp$ collisions at $\sqrt{s}=7$ TeV - INSPIRE

DataBETA

Measurement of the cross-section for $Z \to e^+e^-$ production in $pp$ collisions at $\sqrt{s}=7$ TeV

LHCb

Collaboration

Dec, 2012

22 pages

Published in:

JHEP 02 (2013) 106

e-Print:

1212.4620 [hep-ex]

DOI:

10.1007/JHEP02(2013)106

Report number:

CERN-PH-EP-2012-363,
LHCB-PAPER-2012-036

Experiments:

CERN-LHC-LHCb

View in:

pdflinksdatasets

reference search175 citations

Citations per year

Abstract: (arXiv)

A measurement of the cross-section for pp

\rightarrow

Z

\rightarrow

e

^+

e

^-

is presented using data at

\sqrt{s}=7

TeV corresponding to an integrated luminosity of 0.94 fb

^{-1}

. The process is measured within the kinematic acceptance p_{\mathrm{T}}>20GeV/

c

and 2<\eta<4.5 for the daughter electrons and dielectron invariant mass in the range 60-120 GeV/

c^2

. The cross-section is determined to be

\sigma(pp \rightarrow Z \rightarrow e^+ e^- )=76.0\pm0.8\pm2.0\pm2.6{\rm pb}

where the first uncertainty is statistical, the second is systematic and the third is the uncertainty in the luminosity. The measurement is performed as a function of Z rapidity and as a function of an angular variable which is closely related to the Z transverse momentum. The results are compared with previous LHCb measurements and with theoretical predictions from QCD.

electron: pair production
p p: scattering
quantum chromodynamics
Z0: transverse momentum
LHC-B
rapidity dependence
angular distribution
Z0: hadroproduction
Z0: leptonic decay
electron positron: mass spectrum

References(29)

Figures(8)

[1]

Parton Distributions and QCD at LHCb

R.S. Thorne
(
- University Coll. London
)
,
A.D. Martin
(
- Durham U., IPPP
)
,
W.J. Stirling
(
- Durham U., IPPP
)
,
G. Watt
(
- University Coll. London
)

•
e-Print:
- 0808.1847
•
DOI:
- 10.3360/dis.2008.30

[2]

Inclusive $W$ and $Z$ production in the forward region at $\sqrt{s} = 7$ TeV

LHCb

Collaboration

•

R Aaij
(
- NIKHEF, Amsterdam
)

et al.

- JHEP 06 (2012) 058
•
e-Print:
- 1204.1620
•
DOI:
- 10.1007/JHEP06(2012)058

[3]

A study of the $Z$ production cross-section in $pp$ collisions at $\sqrt{s} = 7$ TeV using tau final states

LHCb

Collaboration

•

R Aaij
(
- NIKHEF, Amsterdam
)

et al.

- JHEP 01 (2013) 111
•
e-Print:
- 1210.6289
•
DOI:
- 10.1007/JHEP01(2013)111

[4]

Precise Study of the $Z/\gamma^*$ Boson Transverse Momentum Distribution in $p\bar{p}$ Collisions using a Novel Technique

D0

Collaboration

•

Victor Mukhamedovich Abazov
(
- Dubna, JINR
)

et al.

- Phys.Rev.Lett. 106 (2011) 122001
•
e-Print:
- 1010.0262
•
DOI:
- 10.1103/PhysRevLett.106.122001

[5]

Optimisation of variables for studying dilepton transverse momentum distributions at hadron colliders

A. Banfi
(
- Zurich, ETH and
- Manchester U.
)
,
S. Redford
(
- Unlisted
)
,
M. Vesterinen
(
- Unlisted
)
,
P. Waller
(
- Unlisted
)
,
T.R. Wyatt
(
- Unlisted
)

- Eur.Phys.J.C 71 (2011) 1600
•
e-Print:
- 1009.1580
•
DOI:
- 10.1140/epjc/s10052-011-1600-y

[6]

The LHCb Detector at the LHC

LHCb

Collaboration

•

A.Augusto Alves, Jr.
(
- Rio de Janeiro, CBPF
)

et al.

- JINST 3 (2008) S08005
•
DOI:
- 10.1088/1748-0221/3/08/S08005

[7]

The LHCb Trigger and its Performance in 2011

R Aaij
(
- Nikhef, Amsterdam
)
,
J Albrecht
(
- CERN
)
,
F Alessio
(
- CERN
)
,
S Amato
(
- Rio de Janeiro Federal U.
)
,
E Aslanides
(
- Marseille, CPPM
)

et al.

- JINST 8 (2013) P04022
•
e-Print:
- 1211.3055
•
DOI:
- 10.1088/1748-0221/8/04/P04022

[8]

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

[9]

Handling of the generation of primary events in Gauss, the LHCb simulation framework

LHCb

Collaboration

•

I. Belyaev
(
- NIKHEF, Amsterdam and
- Moscow, ITEP
)

et al.

•
DOI:
- 10.1109/NSSMIC.2010.5873949

[10]

Implications of CTEQ global analysis for collider observables

Pavel M. Nadolsky
(
- Michigan State U.
)
,
Hung-Liang Lai
(
- Taiwan, Natl. Tsing Hua U. and
- Washington U., Seattle
)
,
Qing-Hong Cao
(
- Michigan State U. and
- Washington U., Seattle and
- UC, Riverside
)
,
Joey Huston
(
- Michigan State U. and
- Washington U., Seattle and
- UC, Riverside
)
,
Jon Pumplin
(
- Michigan State U. and
- Washington U., Seattle and
- UC, Riverside
)

et al.

- Phys.Rev.D 78 (2008) 013004
•
e-Print:
- 0802.0007
•
DOI:
- 10.1103/PhysRevD.78.013004

[11]

Geant4 developments and applications

et al.

- IEEE Trans.Nucl.Sci. 53 (2006) 270
•
DOI:
- 10.1109/TNS.2006.869826

[11]

GEANT4 - A Simulation Toolkit

GEANT4

Collaboration

•

S. Agostinelli
(
- Genoa U.
)

et al.

- Nucl.Instrum.Meth.A 506 (2003) 250-303
•
DOI:
- 10.1016/S0168-9002(03)01368-8

[12]

The LHCb simulation application, Gauss: Design, evolution and experience

LHCb

Collaboration

•

M. Clemencic
(
- CERN
)

et al.

- J.Phys.Conf.Ser. 331 (2011) 032023
•
DOI:
- 10.1088/1742-6596/331/3/032023

[13]

Absolute luminosity measurements with the LHCb detector at the LHC

LHCb

Collaboration

•

R. Aaij
(
- NIKHEF, Amsterdam
)

et al.

- JINST 7 (2012) P01010
•
e-Print:
- 1110.2866
•
DOI:
- 10.1088/1748-0221/7/01/P01010

[14]

PHOTOS Monte Carlo: A Precision tool for QED corrections in $Z$ and $W$ decays

Piotr Golonka
(
- CERN and
- Cracow, INP
)
,
Zbigniew Was
(
- CERN and
- Cracow, INP
)

- Eur.Phys.J.C 45 (2006) 97-107
•
e-Print:
- hep-ph/0506026
•
DOI:
- 10.1140/epjc/s2005-02396-4

[15]

Precision electroweak calculation of the production of a high transverse-momentum lepton pair at hadron colliders

C.M. Carloni Calame
(
- CERN
)
,
G. Montagna
(
- Pavia U. and
- INFN, Pavia
)
,
O. Nicrosini
(
- INFN, Pavia
)
,
A. Vicini
(
- Milan U. and
- INFN, Milan
)

- JHEP 10 (2007) 109
•
e-Print:
- 0710.1722
•
DOI:
- 10.1088/1126-6708/2007/10/109

[16]

Private communication

Z. Was

- http://annapurna.ifj.edu.pl/~wasm/phNLO.htm

[17]

FEWZ 2.0: A code for hadronic Z production at next-to-next-to-leading order

Ryan Gavin
(
- Wisconsin U., Madison
)
,
Ye Li
(
- Wisconsin U., Madison
)
,
Frank Petriello
(
- Argonne and
- Northwestern U.
)
,
Seth Quackenbush
(
- Argonne
)

- Comput.Phys.Commun. 182 (2011) 2388-2403
•
e-Print:
- 1011.3540
•
DOI:
- 10.1016/j.cpc.2011.06.008

[18]

Parton distributions for the LHC

A.D. Martin
(
- Durham U., IPPP
)
,
W.J. Stirling
(
- Cambridge U.
)
,
R.S. Thorne
(
- University Coll. London
)
,
G. Watt
(
- University Coll. London
)

- Eur.Phys.J.C 63 (2009) 189-285
•
e-Print:
- 0901.0002
•
DOI:
- 10.1140/epjc/s10052-009-1072-5

[19]

A first unbiased global NLO determination of parton distributions and their uncertainties

Richard D. Ball
(
- Edinburgh U.
)
,
Luigi Del Debbio
(
- Edinburgh U.
)
,
Stefano Forte
(
- INFN, Milan and
- Milan U.
)
,
Alberto Guffanti
(
- Freiburg U.
)
,
Jose I. Latorre
(
- Barcelona U., ECM
)

et al.

- Nucl.Phys.B 838 (2010) 136-206
•
e-Print:
- 1002.4407
•
DOI:
- 10.1016/j.nuclphysb.2010.05.008

[20]

New parton distributions for collider physics

Hung-Liang Lai
(
- Michigan State U. and
- Taipei Municipal U. of Education
)
,
Marco Guzzi
(
- Southern Methodist U.
)
,
Joey Huston
(
- Michigan State U.
)
,
Zhao Li
(
- Michigan State U.
)
,
Pavel M. Nadolsky
(
- Southern Methodist U.
)

et al.

- Phys.Rev.D 82 (2010) 074024
•
e-Print:
- 1007.2241
•
DOI:
- 10.1103/PhysRevD.82.074024

[20]

Progress in CTEQ-TEA PDF Analysis

Pavel Nadolsky
(
- Southern Methodist U.
)
,
Jun Gao
(
- Southern Methodist U.
)
,
Marco Guzzi
(
- Southern Methodist U.
)
,
Joey Huston
(
- Michigan State U.
)
,
Hung-Liang Lai
(
- Taipei Municipal U. of Education
)

et al.

[21]

The Nonperturbative regime in QCD resummation for gauge boson production at hadron colliders

G.A. Ladinsky
(
- Michigan State U.
)
,
C.P. Yuan
(
- Michigan State U.
)

- Phys.Rev.D 50 (1994) R4239
•
e-Print:
- hep-ph/9311341
•
DOI:
- 10.1103/PhysRevD.50.R4239

[21]

Soft gluon effects on lepton pairs at hadron colliders

C. Balazs
(
- Michigan State U.
)
,
C.P. Yuan
(
- Michigan State U.
)

- Phys.Rev.D 56 (1997) 5558-5583
•
e-Print:
- hep-ph/9704258
•
DOI:
- 10.1103/PhysRevD.56.5558

[21]

Tevatron Run-1 $Z$ boson data and Collins-Soper-Sterman resummation formalism

F. Landry
(
- Michigan State U.
)
,
R. Brock
(
- Michigan State U.
)
,
Pavel M. Nadolsky
(
- Southern Methodist U.
)
,
C.P. Yuan
(
- Michigan State U.
)

- Phys.Rev.D 67 (2003) 073016
•
e-Print:
- hep-ph/0212159
•
DOI:
- 10.1103/PhysRevD.67.073016

1-25 of 29
1
2
25 / page