Imperial College London
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DrNicholasWardle

Faculty of Natural Sciences, Department of Physics

Lecturer in Energy-Frontier Physics
 
 
 
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Contact

 

+44 (0)20 7594 3419n.wardle09

 
 
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Location

 

531Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Tumasyan:2022:10.1007/JHEP06(2022)156,
author = {Tumasyan, A and Adam, W and Andrejkovic, JW and Bergauer, T and Chatterjee, S and Damanakis, K and Dragicevic, M and Del, Valle AE and Fruhwirth, R and Jeitler, M and Krammer, N and Lechner, L and Liko, D and Mikulec, I and Paulitsch, P and Pitters, FM and Schieck, J and Schofbeck, R and Schwarz, D and Templ, S and Waltenberger, W and Wulz, C-E and Chekhovsky, V and Litomin, A and Makarenko, V and Darwish, MR and De, Wolf EA and Janssen, T and Kello, T and Lelek, A and Sfar, HR and Van, Mechelen P and Van, Putte S and Van, Remortel N and Bols, ES and D'Hondt, J and De, Moor A and Delcourt, M and El, Faham H and Lowette, S and Moortgat, S and Morton, A and Muller, D and Sahasransu, AR and Tavernier, S and Van, Doninck W and Vannerom, D and Stylianou, N and Beghin, D and Bilin, B and Clerbaux, B and De, Lentdecker G and Favart, L and Kalsi, AK and Lee, K and Mahdavikhorrami, M and Makarenko, I and Moureaux, L and Paredes, S and Petre, L and Popov, A and Postiau, N and Starling, E and Tho},
doi = {10.1007/JHEP06(2022)156},
journal = {The Journal of High Energy Physics},
pages = {1--51},
title = {Search for resonant production of strongly coupled dark matter in proton-proton collisions at 13 TeV},
url = {http://dx.doi.org/10.1007/JHEP06(2022)156},
volume = {2022},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The first collider search for dark matter arising from a strongly coupled hidden sector is presented and uses a data sample corresponding to 138 fb−1, collected with the CMS detector at the CERN LHC, at s√ = 13 TeV. The hidden sector is hypothesized to couple to the standard model (SM) via a heavy leptophobic Z′ mediator produced as a resonance in proton-proton collisions. The mediator decay results in two “semivisible” jets, containing both visible matter and invisible dark matter. The final state therefore includes moderate missing energy aligned with one of the jets, a signature ignored by most dark matter searches. No structure in the dijet transverse mass spectra compatible with the signal is observed. Assuming the Z′ boson has a universal coupling of 0.25 to the SM quarks, an inclusive search, relevant to any model that exhibits this kinematic behavior, excludes mediator masses of 1.5–4.0 TeV at 95% confidence level, depending on the other signal model parameters. To enhance the sensitivity of the search for this particular class of hidden sector models, a boosted decision tree (BDT) is trained using jet substructure variables to distinguish between semivisible jets and SM jets from background processes. When the BDT is employed to identify each jet in the dijet system as semivisible, the mediator mass exclusion increases to 5.1 TeV, for wider ranges of the other signal model parameters. These limits exclude a wide range of strongly coupled hidden sector models for the first time.
AU  - Tumasyan,A
AU  - Adam,W
AU  - Andrejkovic,JW
AU  - Bergauer,T
AU  - Chatterjee,S
AU  - Damanakis,K
AU  - Dragicevic,M
AU  - Del,Valle AE
AU  - Fruhwirth,R
AU  - Jeitler,M
AU  - Krammer,N
AU  - Lechner,L
AU  - Liko,D
AU  - Mikulec,I
AU  - Paulitsch,P
AU  - Pitters,FM
AU  - Schieck,J
AU  - Schofbeck,R
AU  - Schwarz,D
AU  - Templ,S
AU  - Waltenberger,W
AU  - Wulz,C-E
AU  - Chekhovsky,V
AU  - Litomin,A
AU  - Makarenko,V
AU  - Darwish,MR
AU  - De,Wolf EA
AU  - Janssen,T
AU  - Kello,T
AU  - Lelek,A
AU  - Sfar,HR
AU  - Van,Mechelen P
AU  - Van,Putte S
AU  - Van,Remortel N
AU  - Bols,ES
AU  - D'Hondt,J
AU  - De,Moor A
AU  - Delcourt,M
AU  - El,Faham H
AU  - Lowette,S
AU  - Moortgat,S
AU  - Morton,A
AU  - Muller,D
AU  - Sahasransu,AR
AU  - Tavernier,S
AU  - Van,Doninck W
AU  - Vannerom,D
AU  - Stylianou,N
AU  - Beghin,D
AU  - Bilin,B
AU  - Clerbaux,B
AU  - De,Lentdecker G
AU  - Favart,L
AU  - Kalsi,AK
AU  - Lee,K
AU  - Mahdavikhorrami,M
AU  - Makarenko,I
AU  - Moureaux,L
AU  - Paredes,S
AU  - Petre,L
AU  - Popov,A
AU  - Postiau,N
AU  - Starling,E
AU  - Thomas,L
AU  - Vanden,Bemden M
AU  - Vander,Velde C
AU  - Vanlaer,P
AU  - Gao,X
AU  - Cornelis,T
AU  - Dobur,D
AU  - Knolle,J
AU  - Lambrecht,L
AU  - Mestdach,G
AU  - Niedziela,M
AU  - Rendon,C
AU  - Roskas,C
AU  - Samalan,A
AU  - Skovpen,K
AU  - Tytgat,M
AU  - Vermassen,B
AU  - Wezenbeek,L
AU  - Benecke,A
AU  - Bethani,A
AU  - Bruno,G
AU  - Bury,F
AU  - Caputo,C
AU  - David,P
AU  - Delaere,C
AU  - Donertas,IS
AU  - Giammanco,A
AU  - Jaffel,K
AU  - Jain,S
AU  - Lemaitre,V
AU  - Mondal,K
AU  - Prisciandaro,J
AU  - Taliercio,A
AU  - Teklishyn,M
AU  - Tran,TT
AU  - Vischia,P
AU  - Wertz,S
AU  - Alves,GA
AU  - Hensel,C
AU  - Moraes,A
AU  - Teles,PR
AU  - Alda,Junior WL
AU  - Gallo,Pereira MA
AU  - Ferreira,Filho MB
AU  - Malbouisson,HB
AU  - Carvalho,W
AU  - Chinellato,J
AU  - Da,Costa EM
AU  - Da,Silveira GG
AU  - Damiao,DDJ
AU  - Sousa,VDS
AU  - De,Souza SF
AU  - Herrera,CM
AU  - Amarilo,KM
AU  - Mundim,L
AU  - Nogima,H
AU  - Santoro,A
AU  - Silva,Do Amaral SM
AU  - Sznajder,A
AU  - Thiel,M
AU  - Da,Silva De Araujo FT
AU  - Pereira,AV
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  - 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  - Javaid,T
AU  - Mittal,M
AU  - Yuan,L
AU  - Ahmad,M
AU  - Bauer,G
AU  - Dozen,C
AU  - Hu,Z
AU  - Martins,J
AU  - Wang,Y
AU  - Yi,K
AU  - Chapon,E
AU  - Chen,GM
AU  - Chen,HS
AU  - Chen,M
AU  - Iemmi,F
AU  - Kapoor,A
AU  - Leggat,D
AU  - Liao,H
AU  - Liu,Z-A
AU  - Milosevic,V
AU  - Monti,F
AU  - Sharma,R
AU  - Tao,J
AU  - Thomas-Wilsker,J
AU  - Wang
DO  - 10.1007/JHEP06(2022)156
EP  - 51
PY  - 2022///
SN  - 1029-8479
SP  - 1
TI  - Search for resonant production of strongly coupled dark matter in proton-proton collisions at 13 TeV
T2  - The Journal of High Energy Physics
UR  - http://dx.doi.org/10.1007/JHEP06(2022)156
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000819791700001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://link.springer.com/article/10.1007/JHEP06(2022)156
UR  - http://hdl.handle.net/10044/1/98380
VL  - 2022
ER  -
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