Search for top-squark pair production with Higgs and Z bosons in the final state in pp collisions at 8 TeV - INSPIRE

DataBETA

Search for top-squark pair production with Higgs and Z bosons in the final state in pp collisions at 8 TeV

CMS

Collaboration

2014

22 pages

Report number:

CMS-PAS-SUS-13-024

Experiments:

CERN-LHC-CMS

View in:

CERN Document Server

reference search4 citations

Citations per year

Abstract:

A search for direct top-squark pair production with Higgs or Z bosons in the decay final state is performed using a data sample of proton-proton collisions at

\sqrt{s}=8

~TeV, collected by the CMS detector at the LHC that corresponds to an integrated luminosity of 19.5~fb

^{-1}

. The search is performed in a sample of events containing leptons and b jets. No evidence for a significant excess of events over the standard model background prediction is observed. The results are interpreted in the context of simplified models with pair production of a heavier top-squark mass eigenstate

\tilde{\mathrm{t}}_{2}

decaying to a lighter top-squark mass eigenstate

\tilde{\mathrm{t}}_{1}

via either

\tilde{\mathrm{t}}_{2}\rightarrow \mathrm{H} \tilde{\mathrm{t}}_{1}

or

\tilde{\mathrm{t}}_{2}\rightarrow \mathrm{Z} \tilde{\mathrm{t}}_{1}

, followed in both cases by

\tilde{\mathrm{t}}_{1}\rightarrow \mathrm{t}\tilde{\chi}_{1}^{0}

. The interpretation is performed in the region of signal mass parameter space

m_{\tilde{\mathrm{t}}_{1}} - m_{\tilde{\chi}_{1}^{0}} \sim m_{\mathrm{t}}

, which so far is not probed by existing searches for direct top-squark pair production. The analysis excludes top squarks with masses

m_{\tilde{\mathrm{t}}_{2}}<575

~GeV and

m_{\tilde{\mathrm{t}}_{1}}<400

~GeV at the 95\% confidence level.

Note:

Preliminary results

Data
p p: scattering
jet: bottom
stop: pair production
CERN LHC Coll
background
signature
lepton: final state
CMS
stop: cascade decay

References(60)

Figures(14)

[1]

Supercolor

Savas Dimopoulos
(
- Stanford U., ITP and
- Santa Barbara, KITP and
- Michigan U.
)
,
Stuart Raby
(
- Stanford U., ITP and
- SLAC
)

- Nucl.Phys.B 192 (1981) 353-368
•
DOI:
- 10.1016/0550-3213(81)90430-2

[2]

Dynamical Breaking of Supersymmetry

Edward Witten
(
- Princeton U.
)

- Nucl.Phys.B 188 (1981) 513,
- IN *FERRARA, S. (ED.): SUPERSYMMETRY, VOL. 1*, 443-484. (NUCL. PHYS. B188 (1981) 513-554) AND PREPRINT - WITTEN, E. (REC.JUL.81) 72 P. (SEE BOOK INDEX)
•
DOI:
- 10.1016/0550-3213(81)90006-7

[3]

Supersymmetric Technicolor

Michael Dine
(
- Princeton, Inst. Advanced Study
)
,
Willy Fischler
(
- Pennsylvania U. and
- Princeton, Inst. Advanced Study
)
,
Mark Srednicki
(
- Princeton U.
)

- Nucl.Phys.B 189 (1981) 575-593,
- In *Ann Arbor 1981, Proceedings, Grand Unification*, 282-284
•
DOI:
- 10.1016/0550-3213(81)90582-4

[4]

Softly Broken Supersymmetry and SU(5)

Savas Dimopoulos
(
- Stanford U., ITP and
- Santa Barbara, KITP and
- Michigan U.
)
,
Howard Georgi
(
- Harvard U.
)

- Nucl.Phys.B 193 (1981) 150-162
•
DOI:
- 10.1016/0550-3213(81)90522-8

[5]

Naturalness in Supersymmetric Guts

N. Sakai
(
- Tohoku U.
)

- Z.Phys.C 11 (1981) 153,
- Z. Phys. C11 ( 1981) 153-157 and Sendai Tohoku Univ. - TU-81-225 (81,REC.JUL.) 18p
•
DOI:
- 10.1007/BF01573998

[6]

Cancellation of Quadratically Divergent Mass Corrections in Globally Supersymmetric Spontaneously Broken Gauge Theories

- Nucl.Phys.B 199 (1982) 36,
- Nucl. Phys. B199 ( 1982) 36-58
•
DOI:
- 10.1016/0550-3213(82)90565-X

[7]

Upper Bounds on Supersymmetric Particle Masses

Riccardo Barbieri
(
- CERN and
- Pisa U. and
- INFN, Pisa
)
,
G.F. Giudice
(
- SISSA, Trieste and
- INFN, Trieste
)

- Nucl.Phys.B 306 (1988) 63-76
•
DOI:
- 10.1016/0550-3213(88)90171-X

[8]

One loop analysis of the electroweak breaking in supersymmetric models and the fine tuning problem

B. de Carlos
(
- Madrid, Inst. Estructura Materia
)
,
J.A. Casas
(
- CERN and
- Madrid, Inst. Estructura Materia
)

- Phys.Lett.B 309 (1993) 320-328
•
e-Print:
- hep-ph/9303291
•
DOI:
- 10.1016/0370-2693(93)90940-J

[9]

Naturalness constraints in supersymmetric theories with nonuniversal soft terms

S. Dimopoulos
(
- CERN
)
,
G.F. Giudice
(
- CERN
)

- Phys.Lett.B 357 (1995) 573-578
•
e-Print:
- hep-ph/9507282
•
DOI:
- 10.1016/0370-2693(95)00961-J

[10]

Predictions from a U(2) flavor symmetry in supersymmetric theories

Riccardo Barbieri
(
- Pisa U. and
- INFN, Pisa
)
,
G.R. Dvali
(
- CERN
)
,
Lawrence J. Hall
(
- UC, Berkeley and
- LBL, Berkeley
)

- Phys.Lett.B 377 (1996) 76-82
•
e-Print:
- hep-ph/9512388
•
DOI:
- 10.1016/0370-2693(96)00318-8

[11]

Natural SUSY Endures

Michele Papucci
(
- UC, Berkeley and
- LBL, Berkeley
)
,
Joshua T. Ruderman
(
- UC, Berkeley and
- LBL, Berkeley
)
,
Andreas Weiler
(
- CERN and
- DESY
)

- JHEP 09 (2012) 035
•
e-Print:
- 1110.6926
•
DOI:
- 10.1007/JHEP09(2012)035

[12]

Search for a supersymmetric partner to the top quark in final states with jets and missing transverse momentum at $\sqrt{s}=7$ TeV with the ATLAS detector

ATLAS

Collaboration

•

Georges Aad
(
- Freiburg U.
)

et al.

- Phys.Rev.Lett. 109 (2012) 211802
•
e-Print:
- 1208.1447
•
DOI:
- 10.1103/PhysRevLett.109.211802

[13]

Search for direct top squark pair production in final states with one isolated lepton, jets, and missing transverse momentum in $\sqrt{s}=7$ TeV $pp$ collisions using 4.7 $fb^{-1}$ of ATLAS data

ATLAS

Collaboration

•

Georges Aad
(
- Freiburg U.
)

et al.

- Phys.Rev.Lett. 109 (2012) 211803
•
e-Print:
- 1208.2590
•
DOI:
- 10.1103/PhysRevLett.109.211803

[14]

Search for light scalar top quark pair production in final states with two leptons with the ATLAS detector in $\sqrt{s}=7$ TeV proton-proton collisions

ATLAS

Collaboration

•

Georges Aad
(
- Freiburg U.
)

et al.

- Eur.Phys.J.C 72 (2012) 2237
•
e-Print:
- 1208.4305
•
DOI:
- 10.1140/epjc/s10052-012-2237-1

[15]

Search for light top squark pair production in final states with leptons and $b^-$ jets with the ATLAS detector in $\sqrt{s}=7$ TeV proton-proton collisions

ATLAS

Collaboration

•

Georges Aad
(
- Freiburg U.
)

et al.

- Phys.Lett.B 720 (2013) 13-31
•
e-Print:
- 1209.2102
•
DOI:
- 10.1016/j.physletb.2013.01.049

[16]

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

[17]

(Light) Stop Signs

Zhenyu Han
(
- Harvard U., Phys. Dept.
)
,
Andrey Katz
(
- Harvard U., Phys. Dept.
)
,
David Krohn
(
- Harvard U., Phys. Dept.
)
,
Matthew Reece
(
- Harvard U., Phys. Dept.
)

- JHEP 08 (2012) 083
•
e-Print:
- 1205.5808
•
DOI:
- 10.1007/JHEP08(2012)083

[18]

Search for Supersymmetry in pp Collisions at $\sqrt{s}$ =8 TeV in Events with a Single Lepton, Large Jet Multiplicity, and Multiple b Jets

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Lett.B 733 (2014) 328-353
•
e-Print:
- 1311.4937
•
DOI:
- 10.1016/j.physletb.2014.04.023

[19]

Search for Gluino Mediated Bottom- and Top-Squark Production in Multijet Final States in $pp$ Collisions at 8 TeV

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Lett.B 725 (2013) 243-270
•
e-Print:
- 1305.2390
•
DOI:
- 10.1016/j.physletb.2013.06.058

[20]

Search for scalar top quark pair production in natural gauge mediated supersymmetry models with the ATLAS detector in $pp$ collisions at $\sqrt{s}=7$ TeV

ATLAS

Collaboration

•

Georges Aad
(
- Freiburg U.
)

et al.

- Phys.Lett.B 715 (2012) 44-60
•
e-Print:
- 1204.6736
•
DOI:
- 10.1016/j.physletb.2012.07.010

[21]

Study of tau reconstruction algorithms using pp collisions data collected at sqrt(s) = 7 TeV

CMS

Collaboration

[22]

CMS Strategies for tau reconstruction and identification using particle-flow techniques

CMS

Collaboration

[23]

Electron reconstruction and identification at sqrt(s) = 7 TeV

CMS

Collaboration

[24]

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

[25]

Evidence for the 125 GeV Higgs boson decaying to a pair of $\tau$ leptons

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- JHEP 05 (2014) 104
•
e-Print:
- 1401.5041
•
DOI:
- 10.1007/JHEP05(2014)104

1-25 of 60
1
2
3
25 / page