Measurement of the mass difference between top quark and antiquark in pp collisions at $\sqrt{s} = 8$ TeV - INSPIRE

DataBETA

Measurement of the mass difference between top quark and antiquark in pp collisions at $\sqrt{s} = 8$ TeV

CMS

Collaboration

Oct 29, 2016

22 pages

Published in:

Phys.Lett.B 770 (2017) 50-71

Published: Jul 10, 2017 by Elsevier

e-Print:

1610.09551 [hep-ex]

DOI:

10.1016/j.physletb.2017.04.028

PDG:

{\mathit m}_{{{\mathit t}}}

{\mathit m}_{{{\overline{\mathit t}}}}

Report number:

CMS-TOP-12-031,
CERN-EP-2016-249

Experiments:

CERN-LHC-CMS

View in:

reference search22 citations

Citations per year

Abstract: (Elsevier)

The invariance of the standard model (SM) under the CPT transformation predicts equality of particle and antiparticle masses. This prediction is tested by measuring the mass difference between the top quark and antiquark ( Δmt=mt−mt‾ ) that are produced in pp collisions at a center-of-mass energy of 8 TeV, using events with a muon or an electron and at least four jets in the final state. The analysis is based on data corresponding to an integrated luminosity of 19.6 fb−1 collected by the CMS experiment at the LHC, and yields a value of Δmt=−0.15±0.19(stat)±0.09(syst) GeV , which is consistent with the SM expectation. This result is significantly more precise than previously reported measurements.

Note:

Replaced with the published version. Added the journal reference. All figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/TOP-12-031/index.html

CMS
Top quark physics
p p: scattering
p p: colliding beams
top: pair production
bottom: particle identification
antiparticle: mass
anti-top: mass
CERN LHC Coll
CPT: conservation law

References(57)

Figures(10)

[1]

Partial Symmetries of Weak Interactions

S.L. Glashow
(
- Copenhagen U.
)

- Nucl.Phys. 22 (1961) 579-588,
- Also in *Lai, C. H. (Ed.): Gauge Theory Of Weak and Electromagnetic Interactions*, 171-180
•
DOI:
- 10.1016/0029-5582(61)90469-2

[2]

A Model of Leptons

Steven Weinberg
(
- MIT, LNS
)

- Phys.Rev.Lett. 19 (1967) 1264-1266,
- Also in *Lichtenberg, D. B. (ed.), Rosen, S. P. (ed.): Developments In The Quark Theory Of Hadrons, Vol. 1*, 157-159,
- In *Lai, C. H. (ed.): Gauge Theory Of Weak and Electromagnetic Interactions*, 185-187,
- In *Rosner, J. L. (ed.): New Particles*, 26-28
•
DOI:
- 10.1103/PhysRevLett.19.1264

[3]

Weak and Electromagnetic Interactions

Abdus Salam
(
- Imperial Coll., London and
- ICTP, Trieste
)

- Conf.Proc.C 680519 (1968) 367-377,
- Reprinted in *Lichtenberg, D. B. (ed.), Rosen, S. P. (ed.): Developments In The Quark Theory Of Hadrons, Vol. 1*, 160-170, and in *Lai, C. H. (ed.): Gauge Theory Of Weak and Electromagnetic Interactions*, 188-198,
- Also in *Rosner, J.L. (ed.): New particles* 29-39,
- Also in *Ali, A. (ed.) et al.: Selected papers of Abdus Salam* 244-254
•
DOI:
- 10.1142/9789812795915_0034

[4]

Review of Particle Physics

C. Patrignani
(
- Bologna U. and
- INFN, Bologna
)
,
K. Agashe
(
- Maryland U.
)
,
G. Aielli
(
- U. Rome 2, Tor Vergata (main)
)
,
C. Amsler
(
- U. Bern, AEC and
- Stefan Meyer Inst. Subatomare Phys.
)
,
M. Antonelli
(
- Frascati
)

et al.

- Chin.Phys.C 40 (2016) 10, 100001
•
DOI:
- 10.1088/1674-1137/40/10/100001

[5]

CPT violation and the standard model

Don Colladay
(
- Indiana U.
)
,
V.Alan Kostelecky
(
- Indiana U.
)

- Phys.Rev.D 55 (1997) 6760-6774
•
e-Print:
- hep-ph/9703464
•
DOI:
- 10.1103/PhysRevD.55.6760

[6]

A Model of CPT Violation for Neutrinos

Gabriela Barenboim
(
- Fermilab
)
,
Joseph D. Lykken
(
- Fermilab and
- Chicago U., EFI and
- Chicago U.
)

- Phys.Lett.B 554 (2003) 73-80
•
e-Print:
- hep-ph/0210411
•
DOI:
- 10.1016/S0370-2693(02)03262-8

[7]

A new model of solar neutrinos in manifest violation of CPT invariance

Ramaswamy S. Raghavan
(
- Bell Labs and
- Gran Sasso
)

- JCAP 08 (2003) 002
•
e-Print:
- astro-ph/0304331
•
DOI:
- 10.1088/1475-7516/2003/08/002

[8]

CPT and strings

V.Alan Kostelecky
(
- Indiana U.
)
,
Robertus Potting
(
- Indiana U.
)

- Nucl.Phys.B 359 (1991) 545-570
•
DOI:
- 10.1016/0550-3213(91)90071-5

[9]

Measurement of the Mass Difference between $t$ and $\bar{t}$ Quarks

CDF

Collaboration

•

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

et al.

- Phys.Rev.Lett. 106 (2011) 152001
•
e-Print:
- 1103.2782
•
DOI:
- 10.1103/PhysRevLett.106.152001

[10]

Direct measurement of the mass difference between top and antitop quarks

D0

Collaboration

•

Victor Mukhamedovich Abazov
(
- Dubna, JINR
)

et al.

- Phys.Rev.D 84 (2011) 052005
•
e-Print:
- 1106.2063
•
DOI:
- 10.1103/PhysRevD.84.052005

[11]

Measurement of the Mass Difference between Top and Antitop Quarks

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- JHEP 06 (2012) 109
•
e-Print:
- 1204.2807
•
DOI:
- 10.1007/JHEP06(2012)109

[12]

Measurement of the Mass Difference between Top and Anti-top Quarks

CDF

Collaboration

•

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

et al.

- Phys.Rev.D 87 (2013) 5, 052013
•
e-Print:
- 1210.6131
•
DOI:
- 10.1103/PhysRevD.87.052013

[13]

Measurement of the mass difference between top and anti-top quarks in pp collisions at $\sqrt{s} = 7$ TeV using the ATLAS detector

ATLAS

Collaboration

•

Georges Aad
(
- Freiburg U.
)

et al.

- Phys.Lett.B 728 (2014) 363-379
•
e-Print:
- 1310.6527
•
DOI:
- 10.1016/j.physletb.2013.12.010

[14]

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

[15]

Measurement of the Mass and Width of the $W$ Boson in $e^{+} e^{-}$ Collisions at $\sqrt{s}$ = 161-GeV - 209-GeV

DELPHI

Collaboration

•

J. Abdallah
(
- Paris U., VI-VII
)

et al.

- Eur.Phys.J.C 55 (2008) 1-38
•
e-Print:
- 0803.2534
•
DOI:
- 10.1140/epjc/s10052-008-0585-7

[16]

Performance of CMS Muon Reconstruction in $pp$ Collision Events at $\sqrt{s}=7$ TeV

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- JINST 7 (2012) P10002
•
e-Print:
- 1206.4071
•
DOI:
- 10.1088/1748-0221/7/10/P10002

[17]

Energy Calibration and Resolution of the CMS Electromagnetic Calorimeter in $pp$ Collisions at $\sqrt{s} = 7$ TeV

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- JINST 8 (2013) P09009
•
e-Print:
- 1306.2016
•
DOI:
- 10.1088/1748-0221/8/09/P09009

[18]

Performance of Electron Reconstruction and Selection with the CMS Detector in Proton-Proton Collisions at √s = 8 TeV

CMS

Collaboration

•

Vardan Khachatryan
(
- Yerevan Phys. Inst.
)

et al.

- JINST 10 (2015) 06, P06005
•
e-Print:
- 1502.02701
•
DOI:
- 10.1088/1748-0221/10/06/P06005

[19]

CMS Luminosity Based on Pixel Cluster Counting - Summer 2013 Update

CMS

Collaboration

[20]

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

[21]

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

[22]

Matching NLO QCD computations with Parton Shower simulations: the POWHEG method

Stefano Frixione
(
- INFN, Genoa
)
,
Paolo Nason
(
- INFN, Milan Bicocca
)
,
Carlo Oleari
(
- INFN, Milan Bicocca and
- Milan Bicocca U.
)

- JHEP 11 (2007) 070
•
e-Print:
- 0709.2092
•
DOI:
- 10.1088/1126-6708/2007/11/070

[23]

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

[24]

NLO single-top production matched with shower in POWHEG: s- and t-channel contributions

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

- JHEP 09 (2009) 111,
- JHEP 02 (2010) 011 (erratum)
•
e-Print:
- 0907.4076
•
DOI:
- 10.1088/1126-6708/2009/09/111

[25]

Single-top Wt-channel production matched with parton showers using the POWHEG method

Emanuele Re
(
- Durham U., IPPP
)

- Eur.Phys.J.C 71 (2011) 1547
•
e-Print:
- 1009.2450
•
DOI:
- 10.1140/epjc/s10052-011-1547-z

1-25 of 57
1
2
3
25 / page