@article{Sirunyan:2021:10.1016/j.physletb.2021.136565,
author = {Sirunyan, AM and Tumasyan, A and Adam, W and Bergauer, T and Dragicevic, M and Escalante, Del Valle A and Frühwirth, R and Jeitler, M and Krammer, N and Lechner, L and Liko, D and Mikulec, I and Pitters, FM 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 Darwish, MR and De, Wolf EA and Janssen, X and Kello, T and Lelek, A and Pieters, M and Rejeb, Sfar H 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 Lontkovskyi, D and Lowette, S and Marchesini, I and Moortgat, S and Morton, A and Müller, 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 Dorney, B and Favart, L and Grebenyuk, A and Kalsi, AK and Lee, K and Makarenko, I and Moureaux, L and Pétré, L and Popov, A and Postiau, N and Starling, E and Thomas, L an},
doi = {10.1016/j.physletb.2021.136565},
journal = {Physics Letters B},
pages = {1--30},
title = {First measurement of the cross section for top quark pair productionwith additional charm jets using dileptonic final states in pp collisionsat √s = 13 TeV},
url = {http://dx.doi.org/10.1016/j.physletb.2021.136565},
volume = {820},
year = {2021}
}

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TY  - JOUR
AB  - The first measurement of the inclusive cross section for top quark pairs (tt) produced in association withtwo additional charm jets is presented. The analysis uses the dileptonic final states of tt events producedin proton-proton collisions at a centre-of-mass energy of 13 TeV. The data correspond to an integratedluminosity of 41.5 fb−1, recorded by the CMS experiment at the LHC. A new charm jet identificationalgorithm provides input to a neural network that is trained to distinguish among tt events with twoadditional charm (ttcc), bottom (ttbb), and light-flavour or gluon (ttLL) jets. By means of a templatefitting procedure, the inclusive ttcc, ttbb, and ttLL cross sections are simultaneously measured, togetherwith their ratios to the inclusive tt + two jets cross section. This provides measurements of the ttcc andttbb cross sections of 10.1 ± 1.2 (stat) ± 1.4 (syst) pb and 4.54 ± 0.35 (stat) ± 0.56 (syst) pb, respectively,in the full phase space. The results are compared and found to be consistent with predictions from twodifferent matrix element generators with next-to-leading order accuracy in quantum chromodynamics,interfaced with a parton shower simulation.
AU  - Sirunyan,AM
AU  - Tumasyan,A
AU  - Adam,W
AU  - Bergauer,T
AU  - Dragicevic,M
AU  - Escalante,Del Valle A
AU  - Frühwirth,R
AU  - Jeitler,M
AU  - Krammer,N
AU  - Lechner,L
AU  - Liko,D
AU  - Mikulec,I
AU  - Pitters,FM
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  - Darwish,MR
AU  - De,Wolf EA
AU  - Janssen,X
AU  - Kello,T
AU  - Lelek,A
AU  - Pieters,M
AU  - Rejeb,Sfar H
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  - Lontkovskyi,D
AU  - Lowette,S
AU  - Marchesini,I
AU  - Moortgat,S
AU  - Morton,A
AU  - Müller,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  - Dorney,B
AU  - Favart,L
AU  - Grebenyuk,A
AU  - Kalsi,AK
AU  - Lee,K
AU  - Makarenko,I
AU  - Moureaux,L
AU  - Pétré,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  - Khvastunov,I
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  - Delcourt,M
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  - Aldá,Júnior WL
AU  - Belchior,Batista Das Chagas E
AU  - Brandao,Malbouisson H
AU  - Carvalho,W
AU  - Chinellato,J
AU  - Coelho,E
AU  - Da,Costa EM
AU  - Da,Silveira GG
AU  - De,Jesus Damiao D
AU  - Fonseca,De Souza S
AU  - Martins,J
AU  - Matos,Figueiredo D
AU  - Mora,Herrera C
AU  - Mundim,L
AU  - Nogima,H
AU  - Rebello,Teles P
AU  - Sanchez,Rosas LJ
AU  - Santoro,A
AU  - Silva,Do Amaral SM
AU  - Sznajder,A
AU  - Thiel,M
AU  - Torres,Da Silva De Araujo F
AU  - Vilela,Pereira A
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  - Mittal,M
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  - Liao,H
AU  - Liu,Z-A
AU  - Sharma,R
AU  - Spi
DO  - 10.1016/j.physletb.2021.136565
EP  - 30
PY  - 2021///
SN  - 0370-2693
SP  - 1
TI  - First measurement of the cross section for top quark pair productionwith additional charm jets using dileptonic final states in pp collisionsat √s = 13 TeV
T2  - Physics Letters B
UR  - http://dx.doi.org/10.1016/j.physletb.2021.136565
UR  - https://www.sciencedirect.com/science/article/pii/S0370269321005050?via%3Dihub
UR  - http://hdl.handle.net/10044/1/91087
VL  - 820
ER  - 

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