Imperial College London

DrNicholasWardle

Faculty of Natural SciencesDepartment of Physics

Lecturer in Energy-Frontier Physics
 
 
 
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Contact

 

+44 (0)20 7594 3419n.wardle09

 
 
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Location

 

531Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Sirunyan:2021:epjc/s10052-021-09014-x,
author = {Sirunyan, AM and Tumasyan, A and Adam, W and Bergauer, T and Dragicevic, M and Erö, J and Valle, AED and Frühwirth, R and Jeitler, M and Krammer, N and Lechner, L and Liko, D and Mikulec, I and Pitters, FM and Rad, N and Schieck, J and Schöfbeck, R and Spanring, M and Templ, S and Waltenberger, W and Wulz, C-E and Zarucki, M and Chekhovsky, V and Litomin, A and Makarenko, V and Gonzalez, JS and Darwish, MR and De, Wolf EA and Croce, DD and Janssen, X and Kello, T and Lelek, A and Pieters, M and Sfar, HR and Haevermaet, HV and Mechelen, PV and Putte, SV and Remortel, NV and Blekman, F and Bols, ES and Chhibra, SS and DHondt, J and De, Clercq J and Lontkovskyi, D and Lowette, S and Marchesini, I and Moortgat, S and Morton, A and Müller, D and Python, Q and Tavernier, S and Doninck, WV and Mulders, PV and Beghin, D and Bilin, B and Clerbaux, B and De, Lentdecker G and Dorney, B and Favart, L and Grebenyuk, A and Kalsi, AK and Makarenko, I and Moureaux, L and Pétré, L and Popov, A and Post},
doi = {epjc/s10052-021-09014-x},
journal = {The European Physical Journal C},
pages = {1--51},
title = {Measurement of the Higgs boson production rate in association with top quarks in final states with electrons, muons, and hadronically decaying tau leptons at s√=13TeV},
url = {http://dx.doi.org/10.1140/epjc/s10052-021-09014-x},
volume = {81},
year = {2021}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - The rate for Higgs (H) bosons production in association with either one (tH) or two (tt¯H) top quarks is measured in final states containing multiple electrons, muons, or tau leptons decaying to hadrons and a neutrino, using proton–proton collisions recorded at a center-of-mass energy of 13TeV by the CMS experiment. The analyzed data correspond to an integrated luminosity of 137fb−1. The analysis is aimed at events that contain H→WW, H→ττ, or H→ZZ decays and each of the top quark(s) decays either to lepton+jets or all-jet channels. Sensitivity to signal is maximized by including ten signatures in the analysis, depending on the lepton multiplicity. The separation among tH, tt¯H, and the backgrounds is enhanced through machine-learning techniques and matrix-element methods. The measured production rates for the tt¯H and tH signals correspond to 0.92±0.19(stat)+0.17−0.13(syst) and 5.7±2.7(stat)±3.0(syst) of their respective standard model (SM) expectations. The corresponding observed (expected) significance amounts to 4.7 (5.2) standard deviations for tt¯H, and to 1.4 (0.3) for tH production. Assuming that the Higgs boson coupling to the tau lepton is equal in strength to its expectation in the SM, the coupling yt of the Higgs boson to the top quark divided by its SM expectation, κt=yt/ySMt, is constrained to be within −0.9<κt<−0.7 or 0.7<κt<1.1, at 95% confidence level. This result is the most sensitive measurement of the tt¯H production rate to date.
AU - Sirunyan,AM
AU - Tumasyan,A
AU - Adam,W
AU - Bergauer,T
AU - Dragicevic,M
AU - Erö,J
AU - Valle,AED
AU - Frühwirth,R
AU - Jeitler,M
AU - Krammer,N
AU - Lechner,L
AU - Liko,D
AU - Mikulec,I
AU - Pitters,FM
AU - Rad,N
AU - Schieck,J
AU - Schöfbeck,R
AU - Spanring,M
AU - Templ,S
AU - Waltenberger,W
AU - Wulz,C-E
AU - Zarucki,M
AU - Chekhovsky,V
AU - Litomin,A
AU - Makarenko,V
AU - Gonzalez,JS
AU - Darwish,MR
AU - De,Wolf EA
AU - Croce,DD
AU - Janssen,X
AU - Kello,T
AU - Lelek,A
AU - Pieters,M
AU - Sfar,HR
AU - Haevermaet,HV
AU - Mechelen,PV
AU - Putte,SV
AU - Remortel,NV
AU - Blekman,F
AU - Bols,ES
AU - Chhibra,SS
AU - DHondt,J
AU - De,Clercq J
AU - Lontkovskyi,D
AU - Lowette,S
AU - Marchesini,I
AU - Moortgat,S
AU - Morton,A
AU - Müller,D
AU - Python,Q
AU - Tavernier,S
AU - Doninck,WV
AU - Mulders,PV
AU - Beghin,D
AU - Bilin,B
AU - Clerbaux,B
AU - De,Lentdecker G
AU - Dorney,B
AU - Favart,L
AU - Grebenyuk,A
AU - Kalsi,AK
AU - Makarenko,I
AU - Moureaux,L
AU - Pétré,L
AU - Popov,A
AU - Postiau,N
AU - Starling,E
AU - Thomas,L
AU - Velde,CV
AU - Vanlaer,P
AU - Vannerom,D
AU - Wezenbeek,L
AU - Cornelis,T
AU - Dobur,D
AU - Gruchala,M
AU - Khvastunov,I
AU - Niedziela,M
AU - Roskas,C
AU - Skovpen,K
AU - Tytgat,M
AU - Verbeke,W
AU - Vermassen,B
AU - Vit,M
AU - Bruno,G
AU - Bury,F
AU - Caputo,C
AU - David,P
AU - Delaere,C
AU - Delcourt,M
AU - Donertas,IS
AU - Faham,HE
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 - Júnior,WLA
AU - Chagas,EBBD
AU - Malbouisson,HB
AU - Carvalho,W
AU - Chinellato,J
AU - Coelho,E
AU - Da,Costa EM
AU - Da,Silveira GG
AU - De,Jesus Damiao D
AU - De,Souza SF
AU - Martins,J
AU - Figueiredo,DM
AU - Jaime,MM
AU - Herrera,CM
AU - Mundim,L
AU - Nogima,H
AU - Teles,PR
AU - Rosas,LJS
AU - Santoro,A
AU - Amaral,SMSD
AU - Sznajder,A
AU - Thiel,M
AU - Da,Silva De Araujo FT
AU - Pereira,AV
AU - Bernardes,CA
AU - Calligaris,L
AU - Tomei,TRFP
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 - Wang,H
AU - Yuan,L
AU - Ahmad,M
AU - Bauer,G
AU - Hu,Z
AU - Wang,Y
AU - Yi,K
AU - Chapon,E
AU - Chen,GM
AU - Chen,HS
AU - Chen,M
AU - Javaid,T
AU - Kapoor,A
AU - Leggat,D
AU - Li,B
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
DO - epjc/s10052-021-09014-x
EP - 51
PY - 2021///
SN - 1434-6044
SP - 1
TI - Measurement of the Higgs boson production rate in association with top quarks in final states with electrons, muons, and hadronically decaying tau leptons at s√=13TeV
T2 - The European Physical Journal C
UR - http://dx.doi.org/10.1140/epjc/s10052-021-09014-x
UR - https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-021-09014-x
UR - http://hdl.handle.net/10044/1/88596
VL - 81
ER -