Search for heavy neutrinos or third-generation leptoquarks in final states with two hadronically decaying tau leptons and two jets in proton-proton collisions at sqrt(s) = 13 TeV
V. Khachatryan
,
M. Besançon
(1)
,
F. Couderc
(1)
,
M. Dejardin
(1)
,
D. Denegri
(1)
,
B. Fabbro
(1)
,
J.L. Faure
(1)
,
C. Favaro
(1)
,
F. Ferri
(1)
,
S. Ganjour
(1)
,
S. Ghosh
(1)
,
A. Givernaud
(1)
,
P. Gras
(1)
,
G. Hamel De Monchenault
(1)
,
P. Jarry
(1)
,
I. Kucher
(1)
,
E. Locci
(1)
,
M. Machet
(1)
,
J. Malcles
(1)
,
J. Rander
(1)
,
A. Rosowsky
(1)
,
M. Titov
(1)
,
A. Zghiche
(1)
,
A. Abdulsalam
(2)
,
I. Antropov
(2)
,
S. Baffioni
(2)
,
F. Beaudette
(2)
,
P. Busson
(2)
,
L. Cadamuro
(2)
,
E. Chapon
(2)
,
C. Charlot
(2)
,
O. Davignon
(2)
,
R. Granier De Cassagnac
(2)
,
M. Jo
(2)
,
S. Lisniak
(2)
,
P. Min´e
,
M. Nguyen
,
C. Ochando
(2)
,
G. Ortona
(2)
,
P. Paganini
(2)
,
P. Pigard
(2)
,
S. Regnard
(2)
,
R. Salerno
(2)
,
Y. Sirois
(2)
,
T. Strebler
(2)
,
Y. Yilmaz
(2)
,
A. Zabi
(2)
,
J.-L. Agram
(3)
,
J. Andrea
(3)
,
A. Aubin
(3)
,
D. Bloch
(3)
,
J.-M. Brom
(3)
,
M. Buttignol
(3)
,
E.C. Chabert
(3)
,
N. Chanon
(3)
,
C. Collard
(3)
,
E. Conte13
,
X. Coubez
(3)
,
J.-C. Fontaine
(3)
,
D. Gele
(3)
,
U. Goerlach
(3)
,
A.-C. Le Bihan
(3)
,
K. Skovpen
(3)
,
P. Van Hove
(3)
,
S. Gadrat
(4)
,
S. Beauceron
(5)
,
C. Bernet
(5)
,
G. Boudoul
(5)
,
E. Bouvier
(5)
,
C.A. Carrillo Montoya
(5)
,
R. Chierici
(5)
,
D. Contardo
(5)
,
B. Courbon
(5)
,
P. Depasse
(5)
,
H. El Mamouni
(5)
,
J. Fan
(5)
,
J. Fay
(5)
,
S. Gascon
(5)
,
M. Gouzevitch
(5)
,
G. Grenier
(5)
,
B. Ille
(5)
,
Fabienne Lagarde
(5)
,
I.B. Laktineh
(5)
,
M. Lethuillier
(5)
,
L. Mirabito
(5)
,
A.L. Pequegnot
(5)
,
S. Perries
(5)
,
A. Popov
(5)
,
D. Sabes
(5)
,
V. Sordini
(5)
,
M. Vander Donckt
(5)
,
P. Verdier
(5)
,
S. Viret
(5)
V. Khachatryan
- Function : Author
S. Baffioni
- Function : Author
- PersonId : 20331
- IdHAL : stephanie-barrillon
- ORCID : 0000-0002-7075-1673
P. Busson
- Function : Author
- PersonId : 741166
- IdHAL : phbusson
- ORCID : 0000-0001-6027-4511
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R. Granier De Cassagnac
- Function : Author
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P. Min´e
- Function : Author
M. Nguyen
- Function : Author
P. Paganini
- Function : Author
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- IdHAL : pascal-paganini
- ORCID : 0000-0001-9580-683X
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N. Chanon
- Function : Author
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C. Collard
- Function : Author
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E. Conte13
- Function : Author
M. Gouzevitch
- Function : Author
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- IdHAL : maxime-gouzevitch
- ORCID : 0000-0002-5524-880X
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Fabienne Lagarde
- Function : Author
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- IdHAL : fabienne-lagarde
- ORCID : 0000-0002-4015-4376
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M. Lethuillier
- Function : Author
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V. Sordini
- Function : Author
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- IdHAL : viola-sordini
- ORCID : 0000-0003-0885-824X
- IdRef : 128184035
Abstract
A search for new particles has been conducted using events with two high transverse momentum (pt) tau leptons that decay hadronically, at least two high-pt jets, and missing transverse energy from the tau lepton decays. The analysis is performed using data from proton-proton collisions, collected by the CMS experiment in 2015 at sqrt(s) = 13 TeV, corresponding to an integrated luminosity of 2.1 inverse femtobarns. The results are interpreted in two physics models. The first model involves heavy right-handed neutrinos, N[l] (l = e, mu, tau), and right-handed charged bosons, W[R], arising in a left-right symmetric extension of the standard model. Masses of the W[R] boson below 2.35 (1.63) TeV are excluded at 95% confidence level, assuming the N[tau] mass is 0.8 (0.2) times the mass of the W[R] boson and that only the N[tau] flavor contributes to the W[R] decay width. In the second model, pair production of third-generation scalar leptoquarks that decay into tau tau bb is considered. Third-generation scalar leptoquarks with masses below 740 GeV are excluded, assuming a 100% branching fraction for the leptoquark decay to a tau lepton and a bottom quark. This is the first search at hadron colliders for the third-generation Majorana neutrino, as well as the first search for third-generation leptoquarks in the final state with a pair of hadronically decaying tau leptons and jets.
Origin : Publisher files allowed on an open archive
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