Imperial College London

Professor Sir Tejinder Singh Virdee FRS

Faculty of Natural SciencesDepartment of Physics

Professor of Physics
 
 
 
//

Contact

 

+44 (0)20 7594 7590t.virdee Website

 
 
//

Location

 

506Blackett LaboratorySouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Khachatryan:2017:10.1016/j.physletb.2017.02.007,
author = {Khachatryan, V and Sirunyan, AM and Tumasyan, A and Adam, W 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 Hartl, C and Hoermann, N and Hrubec, J and Jeitler, M and Koenig, A and Krammer, M and Kraetschmer, I and Liko, D and Matsushita, T and Mikulec, I and Rabady, D and Rad, N and Rahbaran, B and Rohringer, H and Schieck, J and Strauss, J and Treberer-Treberspurg, W and Waltenberger, W and Wulz, C-E and Mossolov, V and Shumeiko, N and Gonzalez, JS and Alderweireldt, S and Cornelis, T and De, Wolf EA and Janssen, X and Knutsson, A and Lauwers, J and Luyckx, S and Van, de Klundert M and Van, Haevermaet H and Van, Mechelen R and Van, Remortel N and Van, Spilbeeck A and Abu, Zeid S and Blekman, F and D'Hondt, J and Daci, N and De, Bruyn I and Deroover, K and Heracleous, N and Keaveney, J and Lowette, S and Moortgat, S and Moreels, L and Olbrechts, A and Python, Q and Strom, D },
doi = {10.1016/j.physletb.2017.02.007},
journal = {PHYSICS LETTERS B},
pages = {403--430},
title = {Search for top squark pair production in compressed-mass-spectrum scenarios in proton-proton collisions at √s=8 TeV using the αT variable},
url = {http://dx.doi.org/10.1016/j.physletb.2017.02.007},
volume = {767},
year = {2017}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - An inclusive search is performed for supersymmetry in final states containing jets and an apparent imbalance in transverse momentum, View the MathML sourcep→Tmiss, due to the production of unobserved weakly interacting particles in pp collisions at a centre-of-mass energy of 8 TeV. The data, recorded with the CMS detector at the CERN LHC, correspond to an integrated luminosity of 18.5 fb−1. The dimensionless kinematic variable αTαT is used to discriminate between events with genuine View the MathML sourcep→Tmiss associated with unobserved particles and spurious values of View the MathML sourcep→Tmiss arising from jet energy mismeasurements. No excess of event yields above the expected standard model backgrounds is observed. The results are interpreted in terms of constraints on the parameter space of several simplified models of supersymmetry that assume the pair production of top squarks. The search provides sensitivity to a broad range of top squark (View the MathML sourcet˜) decay modes, including the two-body decay View the MathML sourcet˜→cχ˜10, where c is a charm quark and View the MathML sourceχ˜10 is the lightest neutralino, as well as the four-body decay View the MathML sourcet˜→bff¯′χ˜10, where b is a bottom quark and f and View the MathML sourcef¯′ are fermions produced in the decay of an intermediate off-shell W boson. These modes dominate in scenarios in which the top squark and lightest neutralino are nearly degenerate in mass. For these modes, top squarks with masses as large as 260 and 225 GeV are excluded, respectively, for the two- and four-body decays.
AU - Khachatryan,V
AU - Sirunyan,AM
AU - Tumasyan,A
AU - Adam,W
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 - Hartl,C
AU - Hoermann,N
AU - Hrubec,J
AU - Jeitler,M
AU - Koenig,A
AU - Krammer,M
AU - Kraetschmer,I
AU - Liko,D
AU - Matsushita,T
AU - Mikulec,I
AU - Rabady,D
AU - Rad,N
AU - Rahbaran,B
AU - Rohringer,H
AU - Schieck,J
AU - Strauss,J
AU - Treberer-Treberspurg,W
AU - Waltenberger,W
AU - Wulz,C-E
AU - Mossolov,V
AU - Shumeiko,N
AU - Gonzalez,JS
AU - Alderweireldt,S
AU - Cornelis,T
AU - De,Wolf EA
AU - Janssen,X
AU - Knutsson,A
AU - Lauwers,J
AU - Luyckx,S
AU - Van,de Klundert M
AU - Van,Haevermaet H
AU - Van,Mechelen R
AU - Van,Remortel N
AU - Van,Spilbeeck A
AU - Abu,Zeid S
AU - Blekman,F
AU - D'Hondt,J
AU - Daci,N
AU - De,Bruyn I
AU - Deroover,K
AU - Heracleous,N
AU - Keaveney,J
AU - Lowette,S
AU - Moortgat,S
AU - Moreels,L
AU - Olbrechts,A
AU - Python,Q
AU - Strom,D
AU - Tavernier,S
AU - Van,Doninck W
AU - Van,Mulders R
AU - Van,Parijs I
AU - Brun,H
AU - Caillol,C
AU - Clerbaux,B
AU - De,Lentdecker G
AU - Fasanella,G
AU - Favart,L
AU - Goldouzian,R
AU - Grebenyuk,A
AU - Karapostoli,G
AU - Lenzi,T
AU - Leonard,A
AU - Maerschalk,T
AU - Marinov,A
AU - Randle-Conde,A
AU - Seva,T
AU - Vander,Velde C
AU - Vanlaer,R
AU - Yonamine,R
AU - Zenoni,F
AU - Zhang,F
AU - Benucci,L
AU - Cimmino,A
AU - Crucy,S
AU - Dobur,D
AU - Fagot,A
AU - Garcia,G
AU - Gul,M
AU - Mccartin,J
AU - Rios,AAO
AU - Poyraz,D
AU - Ryckbosch,D
AU - Salva,S
AU - SchOfbeck,R
AU - Sigamani,M
AU - Tytgat,M
AU - Van,Driessche W
AU - Yazgan,E
AU - Zaganidis,N
AU - Beluffi,C
AU - Bondu
AU - Brochet,S
AU - Bruno,G
AU - Caudron,A
AU - Ceard,L
AU - De,Visscher S
AU - Delaere,C
AU - Delcourt,M
AU - Forthomme,L
AU - Francois,B
AU - Giammanco,A
AU - Jafari,A
AU - Jez,R
AU - Komm,M
AU - Lemaitre,V
AU - Magitteri,A
AU - Mertens,A
AU - Musich,M
AU - Nuttens,C
AU - Piotrzkowski,K
AU - Quertenmont,L
AU - Selvaggi,M
AU - Marono,MV
AU - Wertz,S
AU - Beliy,N
AU - Hammad,GH
AU - Alda,Junior WL
AU - Alves,FL
AU - Alves,GA
AU - Brito,L
AU - Correa,Martins Junior M
AU - Hamer,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 - De,Jesus Damiao D
AU - De,Oliveira Martins C
AU - Fonseca,De Souza S
AU - Huertas,Guativa LM
AU - Malbouisson,H
AU - Matos,Figueiredo D
AU - Mora,Herrera C
AU - Mundim,L
AU - Nogima,H
AU - Prado,Da Silva WL
AU - Santoro,A
AU - Sznajder,A
AU - Tonelli,Manganote EJ
AU - Vilela,Pereira A
AU - Ahuja,S
AU - Be
DO - 10.1016/j.physletb.2017.02.007
EP - 430
PY - 2017///
SN - 0370-2693
SP - 403
TI - Search for top squark pair production in compressed-mass-spectrum scenarios in proton-proton collisions at √s=8 TeV using the αT variable
T2 - PHYSICS LETTERS B
UR - http://dx.doi.org/10.1016/j.physletb.2017.02.007
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000397861700064&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR - http://hdl.handle.net/10044/1/48196
VL - 767
ER -