Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in $\sqrt{s} =$ 8TeV $pp$ collisions with the ATLAS detector

A search for the direct production of charginos and neutralinos in final states with three leptons and missing transverse momentum is presented. The analysis is based on 20.3 fb-1 of sqrt(s) = 8 TeV proton--proton collision data delivered by the Large Hadron Collider and recorded with the ATLAS detector. Observations are consistent with the Standard Model expectations and limits are set in R-parity-conserving phenomenological Minimal Supersymmetric Standard Models and in simplified supersymmetric models, significantly extending previous results. For simplified supersymmetric models of direct chargino (

\tilde\chi^\pm_1

) and next-to-lightest neutralino (

\tilde{\chi}_2^0

) production with decays to lightest neutralino (

\tilde{\chi}_1^0

) via either all three generations of sleptons, staus only, gauge bosons, or Higgs bosons,

\tilde\chi^\pm_1

and

\tilde{\chi}_2^0

masses are excluded up to 700 GeV, 380 GeV, 345 GeV, or 148 GeV respectively, for a massless

\tilde{\chi}_1^0

.

Note:

29 pages plus author list (50 pages total), 8 figures, 9 tables, submitted to JHEP, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/SUSY-2013-12/

Hadron-Hadron Scattering
chargino: direct production
transverse momentum: missing-energy
p p: scattering
neutralino: associated production
supersymmetry
final state: (3lepton)
ATLAS
minimal supersymmetric standard model
CERN LHC Coll

References(93)

Figures(30)

[1]

Baryon Number Changing Currents

H. Miyazawa
(
- Argonne (main) and
- Tokyo U.
)

- Prog.Theor.Phys. 36 (1966) 6, 1266-1276
•
DOI:
- 10.1143/PTP.36.1266

[2]

Dual Theory for Free Fermions

Pierre Ramond
(
- Fermilab
)

- Phys.Rev.D 3 (1971) 2415-2418
•
DOI:
- 10.1103/PhysRevD.3.2415

[3]

Extension of the Algebra of Poincare Group Generators and Violation of p Invariance

Yu.A. Golfand
(
- Lebedev Inst.
)
,
E.P. Likhtman
(
- Lebedev Inst.
)

- JETP Lett. 13 (1971) 323-326,
- Pisma Zh.Eksp.Teor.Fiz. 13 (1971) 452-455,
•
DOI:
- 10.1142/9789814542340_0001

[4]

Factorizable dual model of pions

A. Neveu
(
- Princeton U.
)
,
J.H. Schwarz
(
- Princeton U.
)

- Nucl.Phys.B 31 (1971) 86-112
•
DOI:
- 10.1016/0550-3213(71)90448-2

[5]

Quark Model of Dual Pions

A. Neveu
(
- Princeton U.
)
,
J.H. Schwarz
(
- Princeton U.
)

- Phys.Rev.D 4 (1971) 1109-1111,
- In *Schwarz, J.H. (ed.): Superstrings, Vol. 1*, 84-86
•
DOI:
- 10.1103/PhysRevD.4.1109

[6]

Field Theory Interpretation of Supergauges in Dual Models

Jean-Loup Gervais
(
- Orsay, LPT and
- IHES, Bures-sur-Yvette
)
,
B. Sakita
(
- Orsay, LPT and
- IHES, Bures-sur-Yvette
)

- Nucl.Phys.B 34 (1971) 632-639,
- In *Schwarz, J.H. (ed.): Superstrings, Vol. 1*, 248-255,
•
DOI:
- 10.1016/0550-3213(71)90351-8

[7]

Is the Neutrino a Goldstone Particle?

D.V. Volkov
(
- Kharkov, KIPT
)
,
V.P. Akulov
(
- Kharkov, KIPT
)

- Phys.Lett.B 46 (1973) 109-110,
- also in *FERRARA, S. (ED.): SUPERSYMMETRY, VOL. 1*, 11-12
•
DOI:
- 10.1016/0370-2693(73)90490-5

[8]

A Lagrangian Model Invariant Under Supergauge Transformations

J. Wess
(
- Karlsruhe U.
)
,
B. Zumino
(
- CERN
)

- Phys.Lett.B 49 (1974) 52,
- IN *FERRARA, S. (ED.): SUPERSYMMETRY, VOL. 1*, 77-79. (PHYS. LETT. B49 (1974) 52-54) AND CERN GENEVA - TH. 1794 (83,REC.JAN.74) 9 P. (SEE BOOK INDEX)
•
DOI:
- 10.1016/0370-2693(74)90578-4

[9]

Supergauge Transformations in Four-Dimensions

J. Wess
(
- Karlsruhe U.
)
,
B. Zumino
(
- CERN
)

- Nucl.Phys.B 70 (1974) 39-50,
- In *Ferrara, S. (ed.): Supersymmetry, Vol. 1*, 13-24,
•
DOI:
- 10.1016/0550-3213(74)90355-1

[10]

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

[11]

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

[12]

Supersymmetry and Weak, Electromagnetic and Strong Interactions

Pierre Fayet
(
- Ecole Normale Superieure
)

- Phys.Lett.B 64 (1976) 159,
- Physics Letters B64 (1976) 159-162 and Paris Ecole Normale Superieure - PTENS 76-14 (76,REC.SEP) 11p
•
DOI:
- 10.1016/0370-2693(76)90319-1

[13]

Spontaneously Broken Supersymmetric Theories of Weak, Electromagnetic and Strong Interactions

Pierre Fayet
(
- Ecole Polytechnique
)

- Phys.Lett.B 69 (1977) 489,
- IN *FERRARA, S. (ED.): SUPERSYMMETRY, VOL. 1*, 666-671. (PHYS. LETT. B69 (1977) 489-494)
•
DOI:
- 10.1016/0370-2693(77)90852-8

[14]

Phenomenology of the Production, Decay, and Detection of New Hadronic States Associated with Supersymmetry

Glennys R. Farrar
(
- Caltech
)
,
Pierre Fayet
(
- Caltech
)

- Phys.Lett.B 76 (1978) 575-579
•
DOI:
- 10.1016/0370-2693(78)90858-4

[15]

Relations Between the Masses of the Superpartners of Leptons and Quarks, the Goldstino Couplings and the Neutral Currents

Pierre Fayet
(
- Caltech
)

- Phys.Lett.B 84 (1979) 416,
- IN *FERRARA, S. (ED.): SUPERSYMMETRY, VOL. 1*, 672-676. (PHYS. LETT. B84 (1979) 416-420) AND CALTECH PASADENA - CALT-68-0692 (REC.MAY 79) 11 P. (SEE BOOK INDEX)
•
DOI:
- 10.1016/0370-2693(79)91229-2