Imperial College London

Professor Geoffrey Hall FRS

Faculty of Natural SciencesDepartment of Physics

Professor of Physics
 
 
 
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Contact

 

+44 (0)20 7594 7800g.hall Website

 
 
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Assistant

 

Ms Paula Brown +44 (0)20 7594 7823

 
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Location

 

511ABlackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Tumasyan:2022:10.1007/JHEP07(2022)081,
author = {Tumasyan, A and Adam, W and Andrejkovic, JW and Bergauer, T and Chatterjee, S and Damanakis, K and Dragicevic, M and Del, Valle AE and Fruhwirth, R and Jeitler, M and Krammer, N and Lechner, L and Liko, D and Mikulec, I and Paulitsch, P and Pitters, FM and Schieck, J and Schofbeck, R and Schwarz, D and Templ, S and Waltenberger, W and Wulz, C-E and Chekhovsky, V and Litomin, A and Makarenko, V and Darwish, MR and De, Wolf EA and Janssen, T and Kello, T and Lelek, A and Sfar, HR and Van, Mechelen P and Van, Putte S and Van, Remortel N and Blekman, F and Bols, ES and D'Hondt, J and Delcourt, M and El, Faham H and Lowette, S and Moortgat, S and Morton, A and Muller, D and Sahasransu, AR and Tavernier, S and Van, Doninck W and Stylianou, N and Beghin, D and Bilin, B and Clerbaux, B and De, Lentdecker G and Favart, L and Grebenyuk, A and Kalsi, AK and Lee, K and Mahdavikhorrami, M and Makarenko, I and Moureaux, L and Petre, L and Popov, A and Postiau, N and Starling, E and Thomas, L and Van},
doi = {10.1007/JHEP07(2022)081},
journal = {The Journal of High Energy Physics},
title = {Search for long-lived heavy neutral leptons with displaced vertices in proton-proton collisions at root s=13 TeV},
url = {http://dx.doi.org/10.1007/JHEP07(2022)081},
volume = {2022},
year = {2022}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - A search for heavy neutral leptons (HNLs), the right-handed Dirac or Majorana neutrinos, is performed in final states with three charged leptons (electrons or muons) using proton-proton collision data collected by the CMS experiment at s√ = 13 TeV at the CERN LHC. The data correspond to an integrated luminosity of 138 fb−1. The HNLs could be produced through mixing with standard model neutrinos ν. For small values of the HNL mass (<20 GeV) and the square of the HNL-ν mixing parameter (10−7–10−2), the decay length of these particles can be large enough so that the secondary vertex of the HNL decay can be resolved with the CMS silicon tracker. The selected final state consists of one lepton emerging from the primary proton-proton collision vertex, and two leptons forming a displaced, secondary vertex. No significant deviations from the standard model expectations are observed, and constraints are obtained on the HNL mass and coupling strength parameters, excluding previously unexplored regions of parameter space in the mass range 1–20 GeV and squared mixing parameter values as low as 10−7.
AU - Tumasyan,A
AU - Adam,W
AU - Andrejkovic,JW
AU - Bergauer,T
AU - Chatterjee,S
AU - Damanakis,K
AU - Dragicevic,M
AU - Del,Valle AE
AU - Fruhwirth,R
AU - Jeitler,M
AU - Krammer,N
AU - Lechner,L
AU - Liko,D
AU - Mikulec,I
AU - Paulitsch,P
AU - Pitters,FM
AU - Schieck,J
AU - Schofbeck,R
AU - Schwarz,D
AU - Templ,S
AU - Waltenberger,W
AU - Wulz,C-E
AU - Chekhovsky,V
AU - Litomin,A
AU - Makarenko,V
AU - Darwish,MR
AU - De,Wolf EA
AU - Janssen,T
AU - Kello,T
AU - Lelek,A
AU - Sfar,HR
AU - Van,Mechelen P
AU - Van,Putte S
AU - Van,Remortel N
AU - Blekman,F
AU - Bols,ES
AU - D'Hondt,J
AU - Delcourt,M
AU - El,Faham H
AU - Lowette,S
AU - Moortgat,S
AU - Morton,A
AU - Muller,D
AU - Sahasransu,AR
AU - Tavernier,S
AU - Van,Doninck W
AU - Stylianou,N
AU - Beghin,D
AU - Bilin,B
AU - Clerbaux,B
AU - De,Lentdecker G
AU - Favart,L
AU - Grebenyuk,A
AU - Kalsi,AK
AU - Lee,K
AU - Mahdavikhorrami,M
AU - Makarenko,I
AU - Moureaux,L
AU - Petre,L
AU - Popov,A
AU - Postiau,N
AU - Starling,E
AU - Thomas,L
AU - Vanden,Bemden M
AU - Vander,Velde C
AU - Vanlaer,P
AU - Gao,X
AU - Cornelis,T
AU - Dobur,D
AU - Knolle,J
AU - Lambrecht,L
AU - Mestdach,G
AU - Niedziela,M
AU - Roskas,C
AU - Samalan,A
AU - Skovpen,K
AU - Tytgat,M
AU - Vermassen,B
AU - Vit,M
AU - Wezenbeek,L
AU - Benecke,A
AU - Bethani,A
AU - Bruno,G
AU - Bury,F
AU - Caputo,C
AU - David,P
AU - Delaere,C
AU - Donertas,IS
AU - Giammanco,A
AU - Jaffel,K
AU - Jain,S
AU - Lemaitre,V
AU - Mondal,K
AU - Prisciandaro,J
AU - Taliercio,A
AU - Teklishyn,M
AU - Tran,TT
AU - Vischia,P
AU - Wertz,S
AU - Alves,GA
AU - Hensel,C
AU - Moraes,A
AU - Teles,PR
AU - Alda,Junior WL
AU - Gallo,Pereira MA
AU - Ferreira,Filho MB
AU - Malbouisson,HB
AU - Carvalho,W
AU - Chinellato,J
AU - Da,Costa EM
AU - Da,Silveira GG
AU - Damiao,DDJ
AU - De,Souza SF
AU - Herrera,CM
AU - Amarilo,KM
AU - Mundim,L
AU - Nogima,H
AU - Santoro,A
AU - Silva,Do Amaral SM
AU - Sznajder,A
AU - Thiel,M
AU - Da,Silva De Araujo FT
AU - Pereira,AV
AU - Bernardes,CA
AU - Calligaris,L
AU - Fernandez,Perez Tomei TR
AU - Gregores,EM
AU - Lemos,DS
AU - Mercadante,PG
AU - Novaes,SF
AU - Padula,SS
AU - Aleksandrov,A
AU - Antchev,G
AU - Hadjiiska,R
AU - Iaydjiev,P
AU - Misheva,M
AU - Rodozov,M
AU - Shopova,M
AU - Sultanov,G
AU - Dimitrov,A
AU - Ivanov,T
AU - Litov,L
AU - Pavlov,B
AU - Petkov,P
AU - Petrov,A
AU - Cheng,T
AU - Javaid,T
AU - Mittal,M
AU - Yuan,L
AU - Ahmad,M
AU - Bauer,G
AU - Dozen,C
AU - Hu,Z
AU - Martins,J
AU - Wang,Y
AU - Yi,K
AU - Chapon,E
AU - Chen,GM
AU - Chen,HS
AU - Chen,M
AU - Iemmi,F
AU - Kapoor,A
AU - Leggat,D
AU - Liao,H
AU - Liu,Z-A
AU - Milosevic,V
AU - Monti,F
AU - Sharma,R
AU - Tao,J
AU - Thomas-Wilsker,J
AU - Wang,J
AU - Zhang,H
AU - Zhao,J
AU - Agap
DO - 10.1007/JHEP07(2022)081
PY - 2022///
SN - 1029-8479
TI - Search for long-lived heavy neutral leptons with displaced vertices in proton-proton collisions at root s=13 TeV
T2 - The Journal of High Energy Physics
UR - http://dx.doi.org/10.1007/JHEP07(2022)081
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000826915800001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR - https://link.springer.com/article/10.1007/JHEP07(2022)081
UR - http://hdl.handle.net/10044/1/98658
VL - 2022
ER -