Search for direct pair production of scalar top quarks in the single- and dilepton channels in proton-proton collisions at $ \sqrt{s}=8 $ TeV - INSPIRE

DataBETA

Search for direct pair production of scalar top quarks in the single- and dilepton channels in proton-proton collisions at $\sqrt{s}=8$ TeV

CMS

Collaboration

Feb 9, 2016

44 pages

Published in:

JHEP 07 (2016) 027,
JHEP 09 (2016) 056 (erratum)

Published: Jul 5, 2016

e-Print:

1602.03169 [hep-ex]

DOI:

10.1007/JHEP07(2016)027,
10.1007/JHEP09(2016)056 (erratum)

PDG: R-parity conserving

{{\widetilde{\mathit t}}}

(Stop) mass limit

Report number:

CMS-SUS-14-015,
CERN-EP-2016-004

Experiments:

CERN-LHC-CMS

View in:

reference search53 citations

Citations per year

Abstract: (Springer)

are reported from a search for the top squark

{\tilde{\mathrm{t}}}_1

, the lighter of the two supersymmetric partners of the top quark. The data sample corresponds to 19.7 fb

^{−1}

of proton-proton collisions at

\sqrt{s}=8

TeV collected with the CMS detector at the LHC. The search targets

{\tilde{\mathrm{t}}}_1\to \mathrm{b}{\tilde{\chi}}_1^{\pm }

and

{\tilde{\mathrm{t}}}_1\to {\mathrm{t}}^{\left(\ast \right)}{\tilde{\chi}}_1^0

decay modes, where

{\tilde{\chi}}_1^{\pm }

and

{\tilde{\chi}}_1^0

are the lightest chargino and neutralino, respectively. The reconstructed final state consists of jets, b jets, missing transverse energy, and either one or two leptons. Leading backgrounds are determined from data. No significant excess in data is observed above the expectation from standard model processes. The results exclude a region of the two-dimensional plane of possible

{\tilde{\mathrm{t}}}_1

and

{\tilde{\chi}}_1^0

masses. The highest excluded

{\tilde{\mathrm{t}}}_1

and

{\tilde{\chi}}_1^0

masses are about 700 GeV and 250 GeV, respectively.

Note:

Replaced with published version. Added the journal reference and DOI. All figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/SUS-14-015/index.html

Hadron-Hadron scattering (experiments)
Supersymmetry
top squark
p p: scattering
p p: colliding beams
supersymmetry: 2
dimension: 2
jet: bottom
transverse energy: missing-energy
squark: pair production

References(43)

Figures(22)

[1]

Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC

ATLAS

Collaboration

•

Georges Aad
(
- Freiburg U.
)

et al.

- Phys.Lett.B 716 (2012) 1-29
•
e-Print:
- 1207.7214
•
DOI:
- 10.1016/j.physletb.2012.08.020

[2]

Observation of a New Boson at a Mass of 125 GeV with the CMS Experiment at the LHC

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Lett.B 716 (2012) 30-61
•
e-Print:
- 1207.7235
•
DOI:
- 10.1016/j.physletb.2012.08.021

[3]

Combined Results of Searches for the Standard Model Higgs Boson in $pp$ Collisions at $\sqrt{s}=7$ TeV

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Lett.B 710 (2012) 26-48
•
e-Print:
- 1202.1488
•
DOI:
- 10.1016/j.physletb.2012.02.064

[4]

Light scalar top quarks and supersymmetric dark matter

- Phys.Rev.D 62 (2000) 035012
•
e-Print:
- hep-ph/9911496
•
DOI:
- 10.1103/PhysRevD.62.035012

[5]

Dark matter, light stops and electroweak baryogenesis

C. Balazs
(
- Argonne
)
,
Marcela Carena
(
- Fermilab
)
,
C.E.M. Wagner
(
- Fermilab and
- Chicago U., EFI
)

- Phys.Rev.D 70 (2004) 015007
•
e-Print:
- hep-ph/0403224
•
DOI:
- 10.1103/PhysRevD.70.015007

[6]

Search for 3- and 4-Body Decays of the Scalar Top Quark in $p\bar{p}$ Collisions at $\sqrt{s} = 1.8$ TeV

D0

Collaboration

•

V.M. Abazov

et al.

- Phys.Lett.B 581 (2004) 147-155
•
DOI:
- 10.1016/j.physletb.2003.12.001

[7]

Search for pair production of the scalar top quark in muon+tau final states

D0

Collaboration

•

Victor Mukhamedovich Abazov
(
- Dubna, JINR
)

et al.

- Phys.Lett.B 710 (2012) 578-586
•
e-Print:
- 1202.1978
•
DOI:
- 10.1016/j.physletb.2012.03.028

[8]

Search for the lightest scalar top quark in events with two leptons in $p \bar{p}$ collisions at $\sqrt{s}$ = 1.96-TeV

D0

Collaboration

•

V.M. Abazov
(
- Dubna, JINR
)

et al.

- Phys.Lett.B 659 (2008) 500-508
•
e-Print:
- 0707.2864
•
DOI:
- 10.1016/j.physletb.2007.11.086

[9]

Search for the Supersymmetric Partner of the Top Quark in $p\bar{p}$ Collisions at $\sqrt{s}$ = 1.96 TeV

CDF

Collaboration

•

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

et al.

- Phys.Rev.D 82 (2010) 092001
•
e-Print:
- 1009.0266
•
DOI:
- 10.1103/PhysRevD.82.092001

[10]

Search for the Supersymmetric Partner of the Top Quark in Dilepton Events from $p\bar{p}$ Collisions at $\sqrt{s} = 1.8$ TeV

CDF

Collaboration

•

D. Acosta
(
- Florida U.
)

et al.

- Phys.Rev.Lett. 90 (2003) 251801
•
e-Print:
- hep-ex/0302009
•
DOI:
- 10.1103/PhysRevLett.90.251801

[11]

ATLAS Run 1 searches for direct pair production of third-generation squarks at the Large Hadron Collider

ATLAS

Collaboration

•

Georges Aad
(
- Marseille, CPPM
)

et al.

- Eur.Phys.J.C 75 (2015) 10, 510,
- Eur.Phys.J.C 76 (2016) 3, 153 (erratum)
•
e-Print:
- 1506.08616
•
DOI:
- 10.1140/epjc/s10052-015-3726-9

[12]

Search for Top-Squark Pair Production in the Single-Lepton Final State in pp Collisions at $\sqrt{s}$ = 8 TeV

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- Eur.Phys.J.C 73 (2013) 12, 2677
•
e-Print:
- 1308.1586
•
DOI:
- 10.1140/epjc/s10052-013-2677-2

[13]

Using Subsystem MT2 for Complete Mass Determinations in Decay Chains with Missing Energy at Hadron Colliders

Michael Burns
(
- Florida U.
)
,
Kyoungchul Kong
(
- Fermilab
)
,
Konstantin T. Matchev
(
- Florida U.
)
,
Myeonghun Park
(
- Florida U.
)

- JHEP 03 (2009) 143
•
e-Print:
- 0810.5576
•
DOI:
- 10.1088/1126-6708/2009/03/143

[14]

CMS. The TriDAS project. Technical design report, vol. 1: The trigger systems

CMS

Collaboration

•

S. Dasu
(
- Wisconsin U., Madison
)

et al.

[15]

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

[16]

CMS Luminosity Based on Pixel Cluster Counting - Summer 2013 Update

CMS

Collaboration

[17]

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

[18]

A Positive-weight next-to-leading-order Monte Carlo for heavy flavour hadroproduction

Stefano Frixione
(
- INFN, Genoa
)
,
Paolo Nason
(
- INFN, Milan Bicocca
)
,
Giovanni Ridolfi
(
- Genoa U. and
- INFN, Genoa
)

- JHEP 09 (2007) 126
•
e-Print:
- 0707.3088
•
DOI:
- 10.1088/1126-6708/2007/09/126

[19]

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

[20]

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

[21]

The fast simulation of the CMS detector at LHC

CMS

Collaboration

•

S. Abdullin
(
- Fermilab
)

et al.

- J.Phys.Conf.Ser. 331 (2011) 032049
•
DOI:
- 10.1088/1742-6596/331/3/032049

[22]

PROSPINO: A Program for the production of supersymmetric particles in next-to-leading order QCD

e-Print:
- hep-ph/9611232

[23]

Squark and gluino production at hadron colliders

- Nucl.Phys.B 492 (1997) 51-103
•
e-Print:
- hep-ph/9610490
•
DOI:
- 10.1016/S0550-3213(97)80027-2

[24]

Threshold resummation for squark-antisquark and gluino-pair production at the LHC

A. Kulesza
(
- DESY
)
,
L. Motyka
(
- Hamburg U., Inst. Theor. Phys. II and
- Jagiellonian U.
)

- Phys.Rev.Lett. 102 (2009) 111802
•
e-Print:
- 0807.2405
•
DOI:
- 10.1103/PhysRevLett.102.111802

[25]

Soft gluon resummation for the production of gluino-gluino and squark-antisquark pairs at the LHC

A. Kulesza
(
- RWTH Aachen U.
)
,
L. Motyka
(
- Hamburg U., Inst. Theor. Phys. II and
- Jagiellonian U.
)

- Phys.Rev.D 80 (2009) 095004
•
e-Print:
- 0905.4749
•
DOI:
- 10.1103/PhysRevD.80.095004

1-25 of 43
1
2
25 / page