Imperial College London

Alexander Tapper

Faculty of Natural SciencesDepartment of Physics

Professor of Physics
 
 
 
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Contact

 

+44 (0)20 7594 1551a.tapper Website

 
 
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Location

 

508Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Sirunyan:2021:10.1103/PhysRevD.104.052001,
author = {Sirunyan, AM and Tumasyan, A and Adam, W and Andrejkovic, JW and Bergauer, T and Chatterjee, S 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 Pitters, FM and Schieck, J and Schofbeck, R and Spanring, M 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, X 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 De, Clercq J and Delcourt, M and Lowette, S and Moortgat, S and Morton, A and Muller, D and Sahasransu, AR and Tavernier, S and Van, Doninck W and Van, Mulders P 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 Makarenko, I and Moureaux, L and Petre, L and Popov, A and Postiau, N and Starling, E and Thomas, L and Vander, Velde C and Vanlaer, P and Vann},
doi = {10.1103/PhysRevD.104.052001},
journal = {Physical Review D: Particles, Fields, Gravitation and Cosmology},
pages = {1--46},
title = {Search for top squark production in fully hadronic final states in proton-proton collisions at root s=13 TeV},
url = {http://dx.doi.org/10.1103/PhysRevD.104.052001},
volume = {104},
year = {2021}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - A search for production of the supersymmetric partners of the top quark, top squarks, is presented. The search is based on proton-proton collision events containing multiple jets, no leptons, and large transverse momentum imbalance. The data were collected with the CMS detector at the CERN LHC at a center-of-mass energy of 13 TeV, and correspond to an integrated luminosity of 137  fb−1. The targeted signal production scenarios are direct and gluino-mediated top squark production, including scenarios in which the top squark and neutralino masses are nearly degenerate. The search utilizes novel algorithms based on deep neural networks that identify hadronically decaying top quarks and W bosons, which are expected in many of the targeted signal models. No statistically significant excess of events is observed relative to the expectation from the standard model, and limits on the top squark production cross section are obtained in the context of simplified supersymmetric models for various production and decay modes. Exclusion limits as high as 1310 GeV are established at the 95% confidence level on the mass of the top squark for direct top squark production models, and as high as 2260 GeV on the mass of the gluino for gluino-mediated top squark production models. These results represent a significant improvement over the results of previous searches for supersymmetry by CMS in the same final state.
AU - Sirunyan,AM
AU - Tumasyan,A
AU - Adam,W
AU - Andrejkovic,JW
AU - Bergauer,T
AU - Chatterjee,S
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 - Pitters,FM
AU - Schieck,J
AU - Schofbeck,R
AU - Spanring,M
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,X
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 - De,Clercq J
AU - Delcourt,M
AU - Lowette,S
AU - Moortgat,S
AU - Morton,A
AU - Muller,D
AU - Sahasransu,AR
AU - Tavernier,S
AU - Van,Doninck W
AU - Van,Mulders P
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 - Makarenko,I
AU - Moureaux,L
AU - Petre,L
AU - Popov,A
AU - Postiau,N
AU - Starling,E
AU - Thomas,L
AU - Vander,Velde C
AU - Vanlaer,P
AU - Vannerom,D
AU - Wezenbeek,L
AU - Cornelis,T
AU - Dobur,D
AU - Gruchala,M
AU - Mestdach,G
AU - Niedziela,M
AU - Roskas,C
AU - Skovpen,K
AU - Tytgat,M
AU - Verbeke,W
AU - Vermassen,B
AU - Vit,M
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 - Lemaitre,V
AU - Mondal,K
AU - Prisciandaro,J
AU - Taliercio,A
AU - Teklishyn,M
AU - Vischia,P
AU - Wertz,S
AU - Wuyckens,S
AU - Alves,GA
AU - Hensel,C
AU - Moraes,A
AU - Alda,Junior WL
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 - Martins,J
AU - Figueiredo,DM
AU - Herrera,CM
AU - Amarilo,KM
AU - Mundim,L
AU - Nogima,H
AU - Teles,PR
AU - Sanchez,Rosas LJ
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 - Atanasov,I
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 - Fang,W
AU - Guo,Q
AU - Javaid,T
AU - Mittal,M
AU - Wang,H
AU - Yuan,L
AU - Ahmad,M
AU - Bauer,G
AU - Dozen,C
AU - Hu,Z
AU - Wang,Y
AU - Yi,K
AU - Chapon,E
AU - Chen,GM
AU - Chen,HS
AU - Chen,M
AU - Kapoor,A
AU - Leggat,D
AU - Liao,H
AU - Liu,Z-A
AU - Sharma,R
AU - Spiezia,A
AU - Tao,J
AU - Thomas-Wilsker,J
AU - Wang,J
AU - Zhang,H
AU - Zhang,S
AU - Zhao,J
AU - Agapitos,A
AU - Ban,Y
AU - Chen,C
AU - Huang,Q
AU - Levin
DO - 10.1103/PhysRevD.104.052001
EP - 46
PY - 2021///
SN - 1550-2368
SP - 1
TI - Search for top squark production in fully hadronic final states in proton-proton collisions at root s=13 TeV
T2 - Physical Review D: Particles, Fields, Gravitation and Cosmology
UR - http://dx.doi.org/10.1103/PhysRevD.104.052001
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000696019400001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR - https://journals.aps.org/prd/abstract/10.1103/PhysRevD.104.052001
UR - http://hdl.handle.net/10044/1/92027
VL - 104
ER -