Imperial College London

ProfessorGeoffreyHall

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{Sirunyan:2020:10.1007/JHEP07(2020)125,
author = {Sirunyan, AM and Tumasyan, A and Adam, W and Ambrogi, F and Bergauer, T and Dragicevic, M and Ero, J and Del, Valle AE and Flechl, M and Fruhwirth, R and Jeitler, M and Krammer, N and Kratschmer, I and Liko, D and Madlener, T and Mikulec, I and Rad, N and Schieck, J and Schofbeck, R and Spanring, M and Spitzbart, D and Waltenberger, W and Wulz, C-E and Zarucki, M and Drugakov, V and Mossolov, V and Gonzalez, JS and Darwish, MR and De, Wolf EA and Di, Croce D and Janssen, X and Lelek, A and Pieters, M and Sfar, HR and Van, Haevermaet H and Van, Mechelen P and Van, Putte S and Van, Remortel N and Blekman, F and Bols, ES and Chhibra, SS and D'Hondt, J and De, Clercq J and Lontkovskyi, D and Lowette, S and Marchesini, I and Moortgat, S and Python, Q and Skovpen, K and Tavernier, S and Van, Doninck W and Van, Mulders P and Burns, D and Beghin, D and Bilin, B and Clerbaux, B and De, Lentdecker G and Delannoy, H and Dorney, B and Favart, L and Grebenyuk, A and Kalsi, AK and Popov, A and Posti},
doi = {10.1007/JHEP07(2020)125},
journal = {The Journal of High Energy Physics},
pages = {1--46},
title = {Measurement of the cross section for t(t)over-bar production with additional jets and b jets in pp collisions at root s=13TeV},
url = {http://dx.doi.org/10.1007/JHEP07(2020)125},
volume = {2020},
year = {2020}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Measurements of the cross section for the production of top quark pairs in association with a pair of jets from bottom quarks (σtt¯bb¯¯¯) and in association with a pair of jets from quarks of any flavor or gluons (σtt¯jj) and their ratio are presented. The data were collected in proton-proton collisions at a center-of-mass energy of 13 TeV by the CMS experiment at the LHC in 2016 and correspond to an integrated luminosity of 35.9 fb−1. The measurements are performed in a fiducial phase space and extrapolated to the full phase space, separately for the dilepton and lepton+jets channels, where lepton corresponds to either an electron or a muon. The results of the measurements in the fiducial phase space for the dilepton and lepton+jets channels, respectively, are σtt¯jj = 2.36±0.02 (stat)±0.20 (syst) pb and 31.0±0.2 (stat)±2.9 (syst) pb, and for the cross section ratio 0.017 ± 0.001 (stat) ± 0.001 (syst) and 0.020 ± 0.001 (stat) ± 0.001 (syst). The values of σtt¯bb¯¯¯ are determined from the product of the σtt¯jj and the cross section ratio, obtaining, respectively, 0.040±0.002 (stat)±0.005 (syst) pb and 0.62±0.03 (stat)±0.07 (syst) pb. These measurements are the most precise to date and are consistent, within the uncertainties, with the standard model expectations obtained using a matrix element calculation at next-to-leading order in quantum chromodynamics matched to a parton shower.
AU - Sirunyan,AM
AU - Tumasyan,A
AU - Adam,W
AU - Ambrogi,F
AU - Bergauer,T
AU - Dragicevic,M
AU - Ero,J
AU - Del,Valle AE
AU - Flechl,M
AU - Fruhwirth,R
AU - Jeitler,M
AU - Krammer,N
AU - Kratschmer,I
AU - Liko,D
AU - Madlener,T
AU - Mikulec,I
AU - Rad,N
AU - Schieck,J
AU - Schofbeck,R
AU - Spanring,M
AU - Spitzbart,D
AU - Waltenberger,W
AU - Wulz,C-E
AU - Zarucki,M
AU - Drugakov,V
AU - Mossolov,V
AU - Gonzalez,JS
AU - Darwish,MR
AU - De,Wolf EA
AU - Di,Croce D
AU - Janssen,X
AU - Lelek,A
AU - Pieters,M
AU - Sfar,HR
AU - Van,Haevermaet H
AU - Van,Mechelen P
AU - Van,Putte S
AU - Van,Remortel N
AU - Blekman,F
AU - Bols,ES
AU - Chhibra,SS
AU - D'Hondt,J
AU - De,Clercq J
AU - Lontkovskyi,D
AU - Lowette,S
AU - Marchesini,I
AU - Moortgat,S
AU - Python,Q
AU - Skovpen,K
AU - Tavernier,S
AU - Van,Doninck W
AU - Van,Mulders P
AU - Burns,D
AU - Beghin,D
AU - Bilin,B
AU - Clerbaux,B
AU - De,Lentdecker G
AU - Delannoy,H
AU - Dorney,B
AU - Favart,L
AU - Grebenyuk,A
AU - Kalsi,AK
AU - Popov,A
AU - Postiau,N
AU - Starling,E
AU - Thomas,L
AU - Vander,Velde C
AU - Vanlaer,P
AU - Vannerom,D
AU - Cornelis,T
AU - Dobur,D
AU - Khvastunov,I
AU - Niedziela,M
AU - Roskas,C
AU - Tytgat,M
AU - Verbeke,W
AU - Vermassen,B
AU - Vit,M
AU - Bondu,O
AU - Bruno,G
AU - Caputo,C
AU - David,P
AU - Delaere,C
AU - Delcourt,M
AU - Giammanco,A
AU - Lemaitre,V
AU - Prisciandaro,J
AU - Saggio,A
AU - Marono,MV
AU - Vischia,P
AU - Zobec,J
AU - Alves,FL
AU - Alves,GA
AU - Correia,Silva G
AU - Hensel,C
AU - Moraes,A
AU - Rebello,Teles P
AU - Batista,Das Chagas EB
AU - Carvalho,W
AU - Chinellato,J
AU - Coelho,E
AU - Da,Costa EM
AU - Da,Silveira GG
AU - De,Jesus Damiao D
AU - De,Oliveira Martins C
AU - Fonseca,De Souza S
AU - Huertas,Guativa LM
AU - Malbouisson,H
AU - Martins,J
AU - Matos,Figueiredo D
AU - Medina,Jaime M
AU - Melo,De Almeida M
AU - Mora,Herrera C
AU - Mundim,L
AU - Nogima,H
AU - Prado,Da Silva WL
AU - Sanchez,Rosas LJ
AU - Santoro,A
AU - Sznajder,A
AU - Thiel,M
AU - Tonelli,Manganote EJ
AU - Da,Silva De Araujo FT
AU - Vilela,Pereira A
AU - Bernardes,CA
AU - Calligaris,L
AU - Fernandez,Perez Tomei TR
AU - Gregoresb,EM
AU - Lemos,DS
AU - Mercadante,PC
AU - Novaes,SF
AU - Padula,S
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 - Bonchev,M
AU - Dimitrov,A
AU - Ivanov,T
AU - Litov,L
AU - Pavlov,B
AU - Petkov,P
AU - Fang,W
AU - Gao,X
AU - Yuan,L
AU - Ahmad,M
AU - Hu,Z
AU - Wang,Y
AU - Chen,GM
AU - Chen,HS
AU - Chen,M
AU - Jiang,CH
AU - Leggat,D
AU - Liao,H
AU - Liu,Z
AU - Spiezia,A
AU - Tao,J
AU - Yazgan,E
AU - Zhang,H
AU - Zhang,S
AU - Zhao,J
AU - Agapitos,A
AU - Ban,Y
DO - 10.1007/JHEP07(2020)125
EP - 46
PY - 2020///
SN - 1029-8479
SP - 1
TI - Measurement of the cross section for t(t)over-bar production with additional jets and b jets in pp collisions at root s=13TeV
T2 - The Journal of High Energy Physics
UR - http://dx.doi.org/10.1007/JHEP07(2020)125
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000551953500001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR - https://link.springer.com/article/10.1007%2FJHEP07%282020%29125
UR - http://hdl.handle.net/10044/1/81691
VL - 2020
ER -