Search for excited electrons singly produced in proton–proton collisions at $\sqrt{s}=13$ TeV with the ATLAS experiment at the LHC - INSPIRE

DataBETA

Search for excited electrons singly produced in proton–proton collisions at $\sqrt{s}=13$ TeV with the ATLAS experiment at the LHC

ATLAS

Collaboration

Jun 7, 2019

45 pages

Published in:

Eur.Phys.J.C 79 (2019) 9, 803

Published: Sep 26, 2019

e-Print:

1906.03204 [hep-ex]

DOI:

10.1140/epjc/s10052-019-7295-1

PDG: Limits for Excited

{{\mathit e}}

{{\mathit e}^{*}}

) from Single Production

Report number:

CERN-EP-2019-021

Experiments:

CERN-LHC-ATLAS

View in:

reference search15 citations

Citations per year

Abstract: (Springer)

A search for excited electrons produced in pp collisions at

\sqrt{s}

= 13

\text {Te}\text {V}

via a contact interaction

q{\bar{q}}\rightarrow ee^*

is presented. The search uses 36.1 fb

^{-1}

of data collected in 2015 and 2016 by the ATLAS experiment at the Large Hadron Collider. Decays of the excited electron into an electron and a pair of quarks (

eq{\bar{q}}

) are targeted in final states with two electrons and two hadronic jets, and decays via a gauge interaction into a neutrino and a

W

boson (

\nu W

) are probed in final states with an electron, missing transverse momentum, and a large-radius jet consistent with a hadronically decaying

W

boson. No significant excess is observed over the expected backgrounds. Upper limits are calculated for the

pp \rightarrow ee^*\rightarrow eeq{\bar{q}}

and

pp \rightarrow ee^*\rightarrow e\nu W

production cross sections as a function of the excited electron mass

m_{e^*}

at 95% confidence level. The limits are translated into lower bounds on the compositeness scale parameter

\Lambda

of the model as a function of

m_{e^*}

. For

m_{e^*} <0.5

\text {Te}\text {V}

, the lower bound for

\Lambda

is 11

\text {Te}\text {V}

. In the special case of

m_{e^*} =\Lambda

, the values of

m_{e^*} <4.8

\text {Te}\text {V}

are excluded. The presented limits on

\Lambda

are more stringent than those obtained in previous searches.

Note:

45 pages in total, author list starting on page 29, 6 figures, 10 tables, published by Eur. Phys. J. C. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2017-22/

p p: colliding beams
e*: search for
p p: scattering
e*: semileptonic decay
e*: mass
mass: lower limit
interaction: gauge
final state: ((n)jet dilepton)
transverse momentum: missing-energy
electron: pair production

References(88)

Figures(14)

[1]

Lepton Number as the Fourth Color

Jogesh C. Pati
(
- Maryland U.
)
,
Abdus Salam
(
- ICTP, Trieste and
- Imperial Coll., London
)

- Phys.Rev.D 10 (1974) 275-289,
- Phys.Rev.D 11 (1975) 703-703 (erratum)
•
DOI:
- 10.1103/PhysRevD.10.275

[2]

Distinguishing Between Dirac and Majorana Neutrinos in Neutral Current Reactions

Boris Kayser
(
- SLAC and
- NSF, Wash., D.C.
)
,
Robert E. Shrock
(
- SUNY, Stony Brook
)

- Phys.Lett.B 112 (1982) 137-142
•
DOI:
- 10.1016/0370-2693(82)90314-8

[3]

New Tests for Quark and Lepton Substructure

E. Eichten
(
- Fermilab and
- Chicago U., EFI
)
,
Kenneth D. Lane
(
- Ohio State U.
)
,
Michael E. Peskin
(
- SLAC
)

- Phys.Rev.Lett. 50 (1983) 811-814,
•
DOI:
- 10.1103/PhysRevLett.50.811

[4]

Anomalous Z Decays: Excited Leptons?

N. Cabibbo
(
- Rome U. and
- INFN, Rome
)
,
L. Maiani
(
- Rome U. and
- INFN, Rome
)
,
Y. Srivastava
(
- Frascati
)

- Phys.Lett.B 139 (1984) 459-463
•
DOI:
- 10.1016/0370-2693(84)91850-1

[5]

Excited Lepton Production at LEP and HERA

- Z.Phys.C 29 (1985) 115
•
DOI:
- 10.1007/BF01571391

[6]

Excited Quark and Lepton Production at Hadron Colliders

U. Baur
(
- Wisconsin U., Madison
)
,
M. Spira
(
- Aachen, Tech. Hochsch.
)
,
P.M. Zerwas
(
- Aachen, Tech. Hochsch.
)

- Phys.Rev.D 42 (1990) 815-824
•
DOI:
- 10.1103/PhysRevD.42.815

[7]

Unitarity bounds for four fermion contact interactions

- Found.Phys. 23 (1993) 399-410
•
DOI:
- 10.1007/BF01883720

[8]

Search for new phenomena in events with three or more charged leptons in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector

ATLAS

Collaboration

•

Georges Aad
(
- Marseille, CPPM
)

et al.

- JHEP 08 (2015) 138
•
e-Print:
- 1411.2921
•
DOI:
- 10.1007/JHEP08(2015)138

[9]

The ATLAS Experiment at the CERN Large Hadron Collider

ATLAS

Collaboration

•

G. Aad
(
- Marseille, CPPM
)

et al.

- JINST 3 (2008) S08003
•
DOI:
- 10.1088/1748-0221/3/08/S08003

[10]

Search for excited leptons at 130-GeV - 140-GeV

ALEPH

Collaboration

•

D. Buskulic
(
- Annecy, LAPP
)

et al.

- Phys.Lett.B 385 (1996) 445-453
•
DOI:
- 10.1016/0370-2693(96)00961-6

[11]

Search for unstable heavy and excited leptons at LEP 2

OPAL

Collaboration

•

G. Abbiendi

et al.

- Eur.Phys.J.C 14 (2000) 73-84
•
e-Print:
- hep-ex/0001056
•
DOI:
- 10.1007/s100520050734

[12]

Search for excited leptons at LEP

L3

Collaboration

•

P. Achard

et al.

- Phys.Lett.B 568 (2003) 23-34
•
e-Print:
- hep-ex/0306016
•
DOI:
- 10.1016/j.physletb.2003.05.004

[13]

Search for excited leptons in e+ e- collisions at s**(1/2) = 189-GeV to 209-GeV

DELPHI

Collaboration

•

J. Abdallah

et al.

- Eur.Phys.J.C 46 (2006) 277-293
•
e-Print:
- hep-ex/0603045
•
DOI:
- 10.1140/epjc/s2006-02501-3

[14]

Searches for excited fermions in $e p$ collisions at HERA

ZEUS

Collaboration

•

S. Chekanov
(
- Argonne
)

et al.

- Phys.Lett.B 549 (2002) 32-47
•
e-Print:
- hep-ex/0109018
•
DOI:
- 10.1016/S0370-2693(02)02863-0

[15]

Search for Excited Electrons in ep Collisions at HERA

H1

Collaboration

•

F.D. Aaron
(
- Bucharest, IFIN-HH and
- Bucharest U.
)

et al.

- Phys.Lett.B 666 (2008) 131-139
•
e-Print:
- 0805.4530
•
DOI:
- 10.1016/j.physletb.2008.07.014

[16]

Search for excited and exotic electrons in the $e \gamma$ decay channel in $p \bar{p}$ collisions at $\sqrt{s} = 1.96$ TeV

CDF

Collaboration

•

D. Acosta
(
- Florida U.
)

et al.

- Phys.Rev.Lett. 94 (2005) 101802
•
e-Print:
- hep-ex/0410013
•
DOI:
- 10.1103/PhysRevLett.94.101802

[17]

Search for excited and exotic muons in the $\mu \gamma$ decay channel in $p \bar{p}$ collisions at $\sqrt{s}$ = 1.96-TeV

CDF

Collaboration

•

A. Abulencia
(
- Illinois U., Urbana
)

et al.

- Phys.Rev.Lett. 97 (2006) 191802
•
e-Print:
- hep-ex/0606043
•
DOI:
- 10.1103/PhysRevLett.97.191802

[18]

Search for excited muons in $p \bar{p}$ collisions at $\sqrt{s}$ = 1.96- TeV

D0

Collaboration

•

V.M. Abazov
(
- Dubna, JINR
)

et al.

- Phys.Rev.D 73 (2006) 111102
•
e-Print:
- hep-ex/0604040
•
DOI:
- 10.1103/PhysRevD.73.111102

[19]

Search for excited electrons in $p \bar{p}$ collisions at $\sqrt{s}$ = 1.96-TeV

D0

Collaboration

•

V.M. Abazov
(
- Dubna, JINR
)

et al.

- Phys.Rev.D 77 (2008) 091102
•
e-Print:
- 0801.0877
•
DOI:
- 10.1103/PhysRevD.77.091102

[20]

Search for excited leptons in proton-proton collisions at $\sqrt{s}=7$ TeV with the ATLAS detector

ATLAS

Collaboration

•

Georges Aad
(
- Freiburg U.
)

et al.

- Phys.Rev.D 85 (2012) 072003
•
e-Print:
- 1201.3293
•
DOI:
- 10.1103/PhysRevD.85.072003

[21]

Search for excited electrons and muons in $\sqrt{s}$ =8 TeV proton-proton collisions with the ATLAS detector

ATLAS

Collaboration

•

Georges Aad
(
- Freiburg U.
)

et al.

- New J.Phys. 15 (2013) 093011
•
e-Print:
- 1308.1364
•
DOI:
- 10.1088/1367-2630/15/9/093011

[22]

A search for an excited muon decaying to a muon and two jets in $pp$ collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector

ATLAS

Collaboration

•

Georges Aad
(
- Marseille, CPPM
)

et al.

- New J.Phys. 18 (2016) 7, 073021,
- New J.Phys. 21 (2019) 10, 109501 (erratum)
•
e-Print:
- 1601.05627
•
DOI:
- 10.1088/1367-2630/18/7/073021

[23]

A search for excited leptons in $pp$ Collisions at $\sqrt{s}=$ 7 TeV

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Lett.B 704 (2011) 143-162
•
e-Print:
- 1107.1773
•
DOI:
- 10.1016/j.physletb.2011.09.021

[24]

Search for Excited Leptons in $pp$ Collisions at $\sqrt{s}=7$ TeV

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Lett.B 720 (2013) 309-329
•
e-Print:
- 1210.2422
•
DOI:
- 10.1016/j.physletb.2013.02.031

[25]

Search for Excited Leptons in Proton-Proton Collisions at $\sqrt{s}$ = 8 TeV

CMS

Collaboration

•

Vardan Khachatryan
(
- Yerevan Phys. Inst.
)

et al.

- JHEP 03 (2016) 125
•
e-Print:
- 1511.01407
•
DOI:
- 10.1007/JHEP03(2016)125

1-25 of 88
1
2
3
4
25 / page