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@article{Sirunyan:2020:09/P09018,
author = {Sirunyan, AM and Tumasyan, A and Adam, W and Ambrogi, F and Bergauer, T and Brandstetter, J and Dragicevic, M and Eroe, J and Del, Valle AE and Flechl, M and Fruehwirth, R and Jeitler, M and Krammer, N and Kraetschmer, I and Liko, D and Madlener, T and Mikulec, I and Rad, N and Schieck, J and Schoefbeck, 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 Beghin, D and Bilin, B and Brun, H and Clerbaux, B and De, Lentdecker G and Delannoy, H and Dorney, B and Favart, L and Grebenyuk, A and Kalsi, AK},
doi = {09/P09018},
journal = {Journal of Instrumentation},
pages = {1--58},
title = {Pileup mitigation at CMS in 13 TeV data},
url = {http://dx.doi.org/10.1088/1748-0221/15/09/P09018},
volume = {15},
year = {2020}
}

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TY  - JOUR
AB  - With increasing instantaneous luminosity at the LHC come additional reconstruction challenges. At high luminosity, many collisions occur simultaneously within one proton-proton bunch crossing. The isolation of an interesting collision from the additional "pileup" collisions is needed for effective physics performance. In the CMS Collaboration, several techniques capable of mitigating the impact of these pileup collisions have been developed. Such methods include charged-hadron subtraction, pileup jet identification, isospin-based neutral particle "δβ" correction, and, most recently, pileup per particle identification. This paper surveys the performance of these techniques for jet and missing transverse momentum reconstruction, as well as muon isolation. The analysis makes use of data corresponding to 35.9 fb−1 collected with the CMS experiment in 2016 at a center-of-mass energy of 13 TeV. The performance of each algorithm is discussed for up to 70 simultaneous collisions per bunch crossing. Significant improvements are found in the identification of pileup jets, the jet energy, mass, and angular resolution, missing transverse momentum resolution, and muon isolation when using pileup per particle identification.
AU  - Sirunyan,AM
AU  - Tumasyan,A
AU  - Adam,W
AU  - Ambrogi,F
AU  - Bergauer,T
AU  - Brandstetter,J
AU  - Dragicevic,M
AU  - Eroe,J
AU  - Del,Valle AE
AU  - Flechl,M
AU  - Fruehwirth,R
AU  - Jeitler,M
AU  - Krammer,N
AU  - Kraetschmer,I
AU  - Liko,D
AU  - Madlener,T
AU  - Mikulec,I
AU  - Rad,N
AU  - Schieck,J
AU  - Schoefbeck,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  - Beghin,D
AU  - Bilin,B
AU  - Brun,H
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  - Silva,GC
AU  - Hensel,C
AU  - Moraes,A
AU  - Teles,PR
AU  - Chagas,EBBS
AU  - Carvalho,W
AU  - Chinellato,J
AU  - Coelho,E
AU  - Costa,EM
AU  - Silveira,GG
AU  - Damiao,DDJ
AU  - Martins,CDO
AU  - De,Souza SF
AU  - Guativa,LMH
AU  - Malbouisson,H
AU  - Martins,J
AU  - Figueiredo,DM
AU  - Jaime,MM
AU  - De,Almeida MM
AU  - Herrera,CM
AU  - Mundim,L
AU  - Nogima,H
AU  - Da,Silva WLP
AU  - Rosas,LJS
AU  - Santoro,A
AU  - Sznajder,A
AU  - Thiel,M
AU  - Manganote,EJT
AU  - De,Araujo FTS
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  - 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  - 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
AU  - Chen,G
AU  - Levin,A
AU  - Li,J
AU  - Li,L
AU  - Li,Q
AU  - Mao,Y
AU  - Qian,SJ
AU  - Wang,D
AU  - Wang,Q
AU  - Ahmad,M
AU  - Hu,Z
AU  - Wang,Y
AU  - Xiao,M
AU  - Avila,C
AU  - Cabrera,A
AU  - Florez,C
AU  - He
DO  - 09/P09018
EP  - 58
PY  - 2020///
SN  - 1748-0221
SP  - 1
TI  - Pileup mitigation at CMS in 13 TeV data
T2  - Journal of Instrumentation
UR  - http://dx.doi.org/10.1088/1748-0221/15/09/P09018
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000577273400018&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://iopscience.iop.org/article/10.1088/1748-0221/15/09/P09018
UR  - http://hdl.handle.net/10044/1/85244
VL  - 15
ER  -

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