Imperial College London
Alternate

Professor Sir Tejinder Singh Virdee FRS

Faculty of Natural Sciences, Department of Physics

Professor of Physics
 
 
 
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t.virdee Website

 
 
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Location

 

506Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Sirunyan:2018:epjc/s10052-018-5567-9,
author = {Sirunyan, AM and Tumasyan, A and Adam, W and Ambrogi, F and Asilar, E and Bergauer, T and Brandstetter, J and Brondolin, E and Dragicevic, M and Eroe, J and Flechl, M and Friedl, M and Fruehwirth, R and Ghete, VM and Grossmann, J and Hrubec, J and Jeitler, M and Koenig, A and Krammer, N and Kraetschmer, I and Liko, D and Madlener, T and Mikulec, I and Pree, E and Rabady, D and Rad, N and Rohringer, H and Schieck, J and Schoefbeck, R and Spanring, M and Spitzbart, D and Waltenberger, W and Wittmann, J and Wulz, C-E and Zarucki, M and Chekbovsky, V and Mossolov, V and Gonzalez, JS and Abu, Zeid S and Blekman, E and D'Hondt, J and De, Bruyn I and De, Clercq J and Deroover, K and Fiouris, G and Lontkovskyi, D and Lowette, S and Moortgat, S and Moreels, L and Python, Q and Skovpen, K and Tavernier, S and Van, Doninck W and Van, Mulders P and Van, Parijs I and Brun, H and Clerbaux, B and De, Lentdecker G and Delannoy, H and Fasanella, G and Favart, L and Goldouzian, R and Grebenyuk, A and Ka},
doi = {epjc/s10052-018-5567-9},
journal = {European Physical Journal C: Particles and Fields},
title = {Measurements of the pp → ZZ production cross section and the Z → 4 branching fraction, and constraints on anomalous triple gauge couplings at √s = 13TeV},
url = {http://dx.doi.org/10.1140/epjc/s10052-018-5567-9},
volume = {78},
year = {2018}
}
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TY  - JOUR
AB  - Four-lepton production in proton-proton collisions,   pp→(Z/γ∗)(Z/γ∗)→4 , where   =e  or   μ , is studied at a center-of-mass energy of 13  TeV  with the CMS detector at the LHC. The data sample corresponds to an integrated luminosity of 35.9  fb−1 . The ZZ production cross section,   σ(pp→ZZ)=17.2±0.5(stat)±0.7(syst)±0.4(theo)±0.4(lumi) pb , measured using events with two opposite-sign, same-flavor lepton pairs produced in the mass region   60<m+−<120GeV , is consistent with standard model predictions. Differential cross sections are measured and are well described by the theoretical predictions. The Z boson branching fraction to four leptons is measured to be   B(Z→4)=4.8±0.2(stat)±0.2(syst)±0.1(theo)±0.1(lumi)×10−6  for events with a four-lepton invariant mass in the range   80<m4<100GeV  and a dilepton mass   m>4GeV  for all opposite-sign, same-flavor lepton pairs. The results agree with standard model predictions. The invariant mass distribution of the four-lepton system is used to set limits on anomalous ZZZ and ZZ  γ  couplings at 95% confidence level:   −0.0012<fZ4<0.0010 ,   −0.0010<fZ5<0.0013 ,   −0.0012<fγ4<0.0013 ,   −0.0012<fγ5<0.0013 .
AU  - Sirunyan,AM
AU  - Tumasyan,A
AU  - Adam,W
AU  - Ambrogi,F
AU  - Asilar,E
AU  - Bergauer,T
AU  - Brandstetter,J
AU  - Brondolin,E
AU  - Dragicevic,M
AU  - Eroe,J
AU  - Flechl,M
AU  - Friedl,M
AU  - Fruehwirth,R
AU  - Ghete,VM
AU  - Grossmann,J
AU  - Hrubec,J
AU  - Jeitler,M
AU  - Koenig,A
AU  - Krammer,N
AU  - Kraetschmer,I
AU  - Liko,D
AU  - Madlener,T
AU  - Mikulec,I
AU  - Pree,E
AU  - Rabady,D
AU  - Rad,N
AU  - Rohringer,H
AU  - Schieck,J
AU  - Schoefbeck,R
AU  - Spanring,M
AU  - Spitzbart,D
AU  - Waltenberger,W
AU  - Wittmann,J
AU  - Wulz,C-E
AU  - Zarucki,M
AU  - Chekbovsky,V
AU  - Mossolov,V
AU  - Gonzalez,JS
AU  - Abu,Zeid S
AU  - Blekman,E
AU  - D'Hondt,J
AU  - De,Bruyn I
AU  - De,Clercq J
AU  - Deroover,K
AU  - Fiouris,G
AU  - Lontkovskyi,D
AU  - Lowette,S
AU  - Moortgat,S
AU  - Moreels,L
AU  - Python,Q
AU  - Skovpen,K
AU  - Tavernier,S
AU  - Van,Doninck W
AU  - Van,Mulders P
AU  - Van,Parijs I
AU  - Brun,H
AU  - Clerbaux,B
AU  - De,Lentdecker G
AU  - Delannoy,H
AU  - Fasanella,G
AU  - Favart,L
AU  - Goldouzian,R
AU  - Grebenyuk,A
AU  - Karapostoli,G
AU  - Lenzi,T
AU  - Luetic,J
AU  - Maerschalk,T
AU  - Marinov,A
AU  - Randle-Conde,A
AU  - Seva,T
AU  - Velde,CV
AU  - Vanlaer,P
AU  - Vannerom,D
AU  - Yonamine,R
AU  - Zenoni,F
AU  - Zhang,F
AU  - Cimmino,A
AU  - Cornelis,T
AU  - Dobur,D
AU  - Fagot,A
AU  - Gul,M
AU  - Khvasttnov,I
AU  - Poyraz,D
AU  - Roskas,C
AU  - Salva,S
AU  - Tytgat,M
AU  - Verbeke,W
AU  - Zaganidis,N
AU  - Bakhshiansohi,H
AU  - Bondu,O
AU  - Brochet,S
AU  - Bruno,G
AU  - Caputo,C
AU  - Caudron,A
AU  - De,Visscher S
AU  - Delaere,C
AU  - Delcourt,M
AU  - Francois,B
AU  - Giammanco,A
AU  - Jafari,A
AU  - Komm,M
AU  - Krintiras,G
AU  - Lemaitre,V
AU  - Magitteri,A
AU  - Mertens,A
AU  - Musich,M
AU  - Piotrzkowski,K
AU  - Quertenmont,L
AU  - Marono,MV
AU  - Wertz,S
AU  - Belly,N
AU  - Alda,Junior WL
AU  - Alves,FL
AU  - Alves,GA
AU  - Brito,L
AU  - Correa,Martins Junior M
AU  - Hensel,C
AU  - Moraes,A
AU  - Pol,ME
AU  - Rebello,Teles P
AU  - Belchior,Batista Das Chagas E
AU  - Carvalho,W
AU  - Chinellato,J
AU  - Custodio,A
AU  - Da,Costa EM
AU  - Da,Silveira GG
AU  - De,Jesus Damiao D
AU  - Fonseca,De Souza S
AU  - Huertas,Guativa LM
AU  - Malbouisson,H
AU  - Melo,De Almeida M
AU  - Mora,Herrera C
AU  - Mundim,L
AU  - Nogima,H
AU  - Santoro,A
AU  - Sznajder,A
AU  - Tonelli,Manganote EJ
AU  - Torres,Da Silva De Araujo F
AU  - Vilela,Pereira A
AU  - Ahuja,S
AU  - Bernardes,CA
AU  - Tomei,TRFP
AU  - Gregores,EM
AU  - Mercadante,PG
AU  - Novaes,SF
AU  - Padula,SS
AU  - Abad,DR
AU  - Vargas,JCR
AU  - Aleksandrov,A
AU  - Hadjiiska,R
AU  - Iaydjiev,P
AU  - Misheva,M
AU  - Rodozov,M
AU  - Shopova,M
AU  - Stoykova,S
AU  - Sultanov,G
AU  - Dimitrov,A
AU  - Glushkov,I
AU  - Litov,L
AU  - Pavlov,B
AU  - Petkov,P
AU  - Fang,W
AU  - Gao,X
AU  - Ahmad,M B
DO  - epjc/s10052-018-5567-9
PY  - 2018///
SN  - 1434-6044
TI  - Measurements of the pp → ZZ production cross section and the Z → 4 branching fraction, and constraints on anomalous triple gauge couplings at √s = 13TeV
T2  - European Physical Journal C: Particles and Fields
UR  - http://dx.doi.org/10.1140/epjc/s10052-018-5567-9
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000426484600003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/58047
VL  - 78
ER  -
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