Measurement of the top-quark mass from the b jet energy spectrum - INSPIRE

DataBETA

Measurement of the top-quark mass from the b jet energy spectrum

CMS

Collaboration

2015

13 pages

Report number:

CMS-PAS-TOP-15-002

Experiments:

CERN-LHC-CMS

View in:

CERN Document Server

reference search31 citations

Citations per year

Abstract:

The top-quark mass is measured using the peak position of the energy distribution of b jets produced from top-quark decays. The analysis is based on a recent theoretical proposal. The measurement is carried out selecting

\mathrm{t\overline{t}}

events with one electron and one muon in the final state in proton-proton collision data at

\sqrt{s}=8~\mathrm{TeV}

, corresponding to an integrated luminosity of 19.7

~\mathrm{fb}^{-1}

. The fitted peak position of the observed energy distribution is calibrated using simulated events and translated to a top-quark mass measurement using relativistic kinematics, with the result

m_{\mathrm{t}}=172.29\pm1.17\,(\mathrm{stat.})\pm2.66\,(\mathrm{syst.})~\mathrm{GeV}

.

Note:

Preliminary results

Data
p p: scattering
p p: colliding beams
top: pair production
top: mass: measured
top: decay
kinematics: relativistic
jet: energy spectrum
calibration
data analysis method

References(27)

Figures(9)

[1]

First combination of Tevatron and LHC measurements of the top-quark mass

ATLAS and
CDF and
CMS and
D0

Collaborations

e-Print:
- 1403.4427

[2]

Measurement of the top quark mass using proton-proton data at ${\sqrt{(s)}}$ = 7 and 8 TeV

CMS

Collaboration

•

Vardan Khachatryan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Rev.D 93 (2016) 7, 072004
•
e-Print:
- 1509.04044
•
DOI:
- 10.1103/PhysRevD.93.072004

[3]

Simple “invariance” of two-body decay kinematics

- Phys.Rev.D 88 (2013) 5, 057701
•
e-Print:
- 1209.0772
•
DOI:
- 10.1103/PhysRevD.88.057701

[4]

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

[5]

MadGraph 5 : Going Beyond

Johan Alwall
(
- Fermilab
)
,
Michel Herquet
(
- NIKHEF, Amsterdam
)
,
Fabio Maltoni
(
- Louvain U., CP3
)
,
Olivier Mattelaer
(
- Louvain U., CP3
)
,
Tim Stelzer
(
- Illinois U., Urbana
)

- JHEP 06 (2011) 128
•
e-Print:
- 1106.0522
•
DOI:
- 10.1007/JHEP06(2011)128

[6]

Automatic spin-entangled decays of heavy resonances in Monte Carlo simulations

Pierre Artoisenet
(
- NIKHEF, Amsterdam
)
,
Rikkert Frederix
(
- CERN
)
,
Olivier Mattelaer
(
- Illinois U., Urbana
)
,
Robbert Rietkerk
(
- NIKHEF, Amsterdam and
- Amsterdam U.
)

- JHEP 03 (2013) 015
•
e-Print:
- 1212.3460
•
DOI:
- 10.1007/JHEP03(2013)015

[7]

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

[8]

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

[9]

The tau decay library TAUOLA: Version 2.4

S. Jadach
(
- CERN and
- Cracow, INP
)
,
Z. Was
(
- CERN and
- Cracow, INP
)
,
R. Decker
(
- Karlsruhe U.
)
,
Johann H. Kuhn
(
- Karlsruhe U.
)

- Comput.Phys.Commun. 76 (1993) 361-380
•
DOI:
- 10.1016/0010-4655(93)90061-G

[10]

New generation of parton distributions with uncertainties from global QCD analysis

J. Pumplin
(
- Michigan State U.
)
,
D.R. Stump
(
- Michigan State U.
)
,
J. Huston
(
- Michigan State U.
)
,
H.L. Lai
(
- Michigan State U.
)
,
Pavel M. Nadolsky
(
- Michigan State U.
)

et al.

- JHEP 07 (2002) 012
•
e-Print:
- hep-ph/0201195
•
DOI:
- 10.1088/1126-6708/2002/07/012

[11]

A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX

Simone Alioli
(
- DESY, Zeuthen and
- INFN, Milan Bicocca
)
,
Paolo Nason
(
- INFN, Milan Bicocca
)
,
Carlo Oleari
(
- Milan Bicocca U. and
- INFN, Milan Bicocca
)
,
Emanuele Re
(
- Durham U., IPPP and
- INFN, Milan Bicocca
)

- JHEP 06 (2010) 043
•
e-Print:
- 1002.2581
•
DOI:
- 10.1007/JHEP06(2010)043

[12]

Differential and total cross sections for top pair and single top production

Nikolaos Kidonakis
(
- Kennesaw State U.
)

[13]

Next-to-next-to-leading soft-gluon corrections for the top quark cross section and transverse momentum distribution

Nikolaos Kidonakis
(
- Kennesaw State U.
)

- Phys.Rev.D 82 (2010) 114030
•
e-Print:
- 1009.4935
•
DOI:
- 10.1103/PhysRevD.82.114030

[14]

Electroweak gauge boson production at hadron colliders through $O(\alpha_s^2)$

Kirill Melnikov
(
- Hawaii U.
)
,
Frank Petriello
(
- Wisconsin U., Madison
)

- Phys.Rev.D 74 (2006) 114017
•
e-Print:
- hep-ph/0609070
•
DOI:
- 10.1103/PhysRevD.74.114017

[15]

MCFM for the Tevatron and the LHC

John M. Campbell
(
- Fermilab
)
,
R.K. Ellis
(
- Fermilab
)

- Nucl.Phys.B Proc.Suppl. 205-206 (2010) 10-15
•
e-Print:
- 1007.3492
•
DOI:
- 10.1016/j.nuclphysbps.2010.08.011

[16]

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

[17]

Commissioning of the Particle-Flow reconstruction in Minimum-Bias and Jet Events from pp Collisions at 7 TeV

CMS

Collaboration

[18]

The anti- $k_t$ jet clustering algorithm

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

[19]

Identification of b-Quark Jets with the CMS Experiment

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- JINST 8 (2013) P04013
•
e-Print:
- 1211.4462
•
DOI:
- 10.1088/1748-0221/8/04/P04013

[20]

Linear interpolation of histograms

Alexander L. Read
(
- Oslo U.
)

- Nucl.Instrum.Meth.A 425 (1999) 357-360
•
DOI:
- 10.1016/S0168-9002(98)01347-3

[21]

Calculation of Residual Energy Correction for b Jets Using Z+b Events in 8 TeV pp Collisions

CMS Collaboration

Collaboration

[22]

Determination of Jet Energy Calibration and Transverse Momentum Resolution in CMS

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- JINST 6 (2011) P11002
•
e-Print:
- 1107.4277
•
DOI:
- 10.1088/1748-0221/6/11/P11002

[23]

Performance of b tagging at sqrt(s)=8 TeV in multijet, ttbar and boosted topology events

CMS

Collaboration

[24]

The PDF4LHC Working Group Interim Report

Sergey Alekhin
(
- DESY, Zeuthen and
- Serpukhov, IHEP
)
,
Simone Alioli
(
- DESY, Zeuthen
)
,
Richard D. Ball
(
- Edinburgh U.
)
,
Valerio Bertone
(
- Freiburg U.
)
,
Johannes Blumlein
(
- DESY, Zeuthen
)

et al.

e-Print:
- 1101.0536

[25]

Measurement of the differential cross section for top quark pair production in pp collisions at $\sqrt{s} = 8\,\text {TeV}$

CMS

Collaboration

•

Vardan Khachatryan
(
- Yerevan Phys. Inst.
)

et al.

- Eur.Phys.J.C 75 (2015) 11, 542
•
e-Print:
- 1505.04480
•
DOI:
- 10.1140/epjc/s10052-015-3709-x

1-25 of 27
1
2
25 / page