Search for lepton-flavor violating decays of heavy resonances and quantum black holes to eμ final states in proton-proton collisions at $ \sqrt{s}=13 $ TeV - INSPIRE

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Search for lepton-flavor violating decays of heavy resonances and quantum black holes to eμ final states in proton-proton collisions at $\sqrt{s}=13$ TeV

CMS

Collaboration

Feb 4, 2018

39 pages

Published in:

JHEP 04 (2018) 073

Published: Apr 13, 2018

e-Print:

1802.01122 [hep-ex]

DOI:

10.1007/JHEP04(2018)073

PDG:

{{\widetilde{\mathit \nu}}}

(Sneutrino) mass limit

Report number:

CMS-EXO-16-058,
CERN-EP-2018-001

Experiments:

CERN-LHC-CMS

View in:

reference search34 citations

Citations per year

Abstract: (Springer)

A search is reported for heavy resonances decaying into eμ final states in proton-proton collisions recorded by the CMS experiment at the CERN LHC at

\sqrt{s}=13

TeV, corresponding to an integrated luminosity of 35.9 fb

^{−1}

. The search focuses on resonance masses above 200 GeV. With no evidence found for physics beyond the standard model in the eμ mass spectrum, upper limits are set at 95% confidence level on the product of the cross section and branching fraction for this lepton-flavor violating signal. Based on these results, resonant τ sneutrino production in R-parity violating supersymmetric models is excluded for masses below 1.7 TeV, for couplings λ

_{132}

= λ

_{231}

= λ

_{311}^{′}

= 0.01. Heavy Z

^{′}

gauge bosons with lepton-flavor violating transitions are excluded for masses up to 4.4 TeV. The eμ mass spectrum is also interpreted in terms of non-resonant contributions from quantum black-hole production in models with one to six extra spatial dimensions, and lower mass limits are found between 3.6 and 5.6 TeV. In all interpretations used in this analysis, the results of this search improve previous limits by about 1 TeV. These limits correspond to the most sensitive values obtained at colliders.

Note:

Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/EXO-16-058 (CMS Public Pages)

Hadron-Hadron scattering (experiments)
Supersymmetry
p p: colliding beams
resonance: production
resonance: heavy
narrow resonance
resonance: leptonic decay
black hole: quantum
p p: scattering
resonance: mass

References(49)

Figures(12)

[1]

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

[2]

CERN LHC signals for neutrino mass model in bilinear R-parity violating mAMSB

F. de Campos
(
- Sao Paulo U., Guaratingueta
)
,
M.A. Diaz
(
- Chile U., Catolica
)
,
O.J.P. Eboli
(
- Sao Paulo U.
)
,
M.B. Magro
(
- FSA, Santo Andre
)
,
W. Porod
(
- Wurzburg U.
)

et al.

- Phys.Rev.D 77 (2008) 115025
•
e-Print:
- 0803.4405
•
DOI:
- 10.1103/PhysRevD.77.115025

[3]

CP phases, LFV, RpV and all that

ECFA/DESY SUSY

Collaboration

•

A. Bartl

et al.

•
e-Print:
- hep-ph/0301027

[4]

R-parity violating supersymmetry

et al.

- Phys.Rept. 420 (2005) 1-202
•
e-Print:
- hep-ph/0406039
•
DOI:
- 10.1016/j.physrep.2005.08.006

[5]

The Physics of Heavy $Z^\prime$ Gauge Bosons

Paul Langacker
(
- Princeton, Inst. Advanced Study
)

- Rev.Mod.Phys. 81 (2009) 1199-1228
•
e-Print:
- 0801.1345
•
DOI:
- 10.1103/RevModPhys.81.1199

[6]

Colorful quantum black holes at the LHC

- Phys.Lett.B 668 (2008) 20-23
•
e-Print:
- 0806.4605
•
DOI:
- 10.1016/j.physletb.2008.08.011

[7]

Black Holes and Quantum Gravity at the LHC

- JHEP 05 (2008) 003
•
e-Print:
- 0708.3017
•
DOI:
- 10.1088/1126-6708/2008/05/003

[8]

Displaced Supersymmetry

Peter W. Graham
(
- Stanford U., ITP
)
,
David E. Kaplan
(
- Johns Hopkins U.
)
,
Surjeet Rajendran
(
- Stanford U., ITP and
- Johns Hopkins U.
)
,
Prashant Saraswat
(
- Stanford U., ITP
)

- JHEP 07 (2012) 149
•
e-Print:
- 1204.6038
•
DOI:
- 10.1007/JHEP07(2012)149

[9]

Quantum black holes with charge, colour, and spin at the LHC

Douglas M. Gingrich
(
- Alberta U.
)

- J.Phys.G 37 (2010) 105008
•
e-Print:
- 0912.0826
•
DOI:
- 10.1088/0954-3899/37/10/105008

[10]

A Large mass hierarchy from a small extra dimension

Lisa Randall
(
- Princeton U. and
- MIT
)
,
Raman Sundrum
(
- Boston U.
)

- Phys.Rev.Lett. 83 (1999) 3370-3373
•
e-Print:
- hep-ph/9905221
•
DOI:
- 10.1103/PhysRevLett.83.3370

[11]

The Hierarchy problem and new dimensions at a millimeter

Nima Arkani-Hamed
(
- SLAC
)
,
Savas Dimopoulos
(
- Stanford U., Phys. Dept.
)
,
G.R. Dvali
(
- ICTP, Trieste
)

- Phys.Lett.B 429 (1998) 263-272
•
e-Print:
- hep-ph/9803315
•
DOI:
- 10.1016/S0370-2693(98)00466-3

[12]

Search for R-parity Violating Decays of $\tau$ Sneutrinos to $e\mu$ , $\mu\tau$ , and $e\tau$ Pairs in $p\bar{p}$ Collisions at $\sqrt{s} = 1.96$ TeV

CDF

Collaboration

•

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

et al.

- Phys.Rev.Lett. 105 (2010) 191801
•
e-Print:
- 1004.3042
•
DOI:
- 10.1103/PhysRevLett.105.191801

[13]

Search for sneutrino Production in $e\mu$ Final States in 5.3 fb $^{-1}$ of $p\bar{p}$ Collisions at $\sqrt{s}$ =1.96 TeV

D0

Collaboration

•

Victor Mukhamedovich Abazov
(
- Dubna, JINR
)

et al.

- Phys.Rev.Lett. 105 (2010) 191802
•
e-Print:
- 1007.4835
•
DOI:
- 10.1103/PhysRevLett.105.191802

[14]

Search for a Heavy Neutral Particle Decaying to $e\mu$ , $e\tau$ , or $\mu\tau$ in $pp$ Collisions at $\sqrt{s}=8$ TeV with the ATLAS Detector

ATLAS

Collaboration

•

Georges Aad
(
- Marseille, CPPM
)

et al.

- Phys.Rev.Lett. 115 (2015) 3, 031801
•
e-Print:
- 1503.04430
•
DOI:
- 10.1103/PhysRevLett.115.031801

[15]

Search for lepton flavour violating decays of heavy resonances and quantum black holes to an e $\mu$ pair in proton-proton collisions at $\sqrt{s}$ = 8 TeV

CMS

Collaboration

•

Vardan Khachatryan
(
- Yerevan Phys. Inst.
)

et al.

- Eur.Phys.J.C 76 (2016) 6, 317
•
e-Print:
- 1604.05239
•
DOI:
- 10.1140/epjc/s10052-016-4149-y

[16]

Search for new phenomena in different-flavour high-mass dilepton final states in pp collisions at $\sqrt{s}=13$ Tev with the ATLAS detector

ATLAS

Collaboration

•

Morad Aaboud
(
- Oujda U.
)

et al.

- Eur.Phys.J.C 76 (2016) 10, 541
•
e-Print:
- 1607.08079
•
DOI:
- 10.1140/epjc/s10052-016-4385-1

[17]

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

[18]

The CMS trigger system

CMS

Collaboration

•

Vardan Khachatryan
(
- Yerevan Phys. Inst.
)

et al.

- JINST 12 (2017) 01, P01020
•
e-Print:
- 1609.02366
•
DOI:
- 10.1088/1748-0221/12/01/P01020

[19]

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

[20]

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

[21]

CalcHEP 3.4 for collider physics within and beyond the Standard Model

Alexander Belyaev
(
- Rutherford and
- Southampton U.
)
,
Neil D. Christensen
(
- Pittsburgh U.
)
,
Alexander Pukhov
(
- SINP, Moscow
)

- Comput.Phys.Commun. 184 (2013) 1729-1769
•
e-Print:
- 1207.6082
•
DOI:
- 10.1016/j.cpc.2013.01.014

[22]

A Brief Introduction to PYTHIA 8.1

Torbjorn Sjostrand
(
- CERN and
- Lund U.
)
,
Stephen Mrenna
(
- Fermilab
)
,
Peter Z. Skands
(
- CERN and
- Fermilab
)

- Comput.Phys.Commun. 178 (2008) 852-867
•
e-Print:
- 0710.3820
•
DOI:
- 10.1016/j.cpc.2008.01.036

[23]

Monte Carlo event generator for black hole production and decay in proton-proton collisions

Douglas M. Gingrich
(
- Alberta U. and
- TRIUMF
)

- Comput.Phys.Commun. 181 (2010) 1917-1924
•
e-Print:
- 0911.5370
•
DOI:
- 10.1016/j.cpc.2010.07.027

[24]

Event generator tunes obtained from underlying event and multiparton scattering measurements

CMS

Collaboration

•

Vardan Khachatryan
(
- Yerevan Phys. Inst.
)

et al.

- Eur.Phys.J.C 76 (2016) 3, 155
•
e-Print:
- 1512.00815
•
DOI:
- 10.1140/epjc/s10052-016-3988-x

[25]

New generation of parton distributions with uncertainties from global QCD analysis

J. Pumplin
(
- Michigan State U.
)
,
D.R. Stump
(
- Michigan State U.
)
,
J. Huston
(
- Michigan State U.
)
,
H.L. Lai
(
- Michigan State U.
)
,
Pavel M. Nadolsky
(
- Michigan State U.
)

et al.

- JHEP 07 (2002) 012
•
e-Print:
- hep-ph/0201195
•
DOI:
- 10.1088/1126-6708/2002/07/012

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