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DITTO

Comprehensive search for new phenomena in the dilepton spectrum at the LHC

Grant period2023-10-01 - 2028-09-30
Funding bodyEuropean Union
Call numberERC-2022-COG
Grant number101089007
IdentifierG:(EU-Grant)101089007

Note: While the Standard Model of particle physics (SM) has proven tremendously successful, experimental evidence points to it not being a complete description of our universe, but a low energy approximation of a more complete theory. The searches for new phenomena (NP) are therefore an important component of the experimental program of the Large Hadron Collider (LHC). While there is no direct evidence for NP at the LHC, measurements of beauty hadron decays display a seemingly coherent pattern of deviations with respect to the SM predictions, which suggest that NP couples differently to three generations of matter. The quark-level processes responsible for these so-called ‘flavor anomalies’ are related to dilepton production processes (Drell-Yan scattering) through the crossing symmetry. The measurements of the kinematics of the high mass Drell-Yan (HMDY) process are therefore uniquely sensitive to a wide variety of NP explanations of the ‘anomalies’. The goal of this ground-breaking project is to provide for the first time the complete set of world’s most precise HMDY differential cross-section measurements covering not only the light lepton channels ev/μv/ee/µµ, but also extremely challenging third generation τv and ττ, ditau (DITTO), final states. These measurements will be used to probe NP at mass scales beyond the reach of direct production at the LHC through the SM effective field theory framework. The innovative performance and trigger improvements of the DITTO project will allow the ensemble of the proposed measurements to reach maximum precision, boosting the possibility for a NP discovery within the data sets expected to be collected by the ATLAS experiment at the LHC. Just as dilepton resonances, such as the J/ψ and Y mesons and the Z and W bosons were crucial for the establishment of the SM, the study of the same final state, to be undertaken in the DITTO project, will help to pave the way for a better understanding of the physics processes beyond it.
   

Recent Publications

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http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article  ;  ;  ; et al
Observation of W+W−γ production in pp collisions at s = 13 TeV with the ATLAS detector and constraints on anomalous quartic gauge-boson couplings
Physics letters / B 873, 140050 - () [10.1016/j.physletb.2025.140050]  GO DBCoverage  Download fulltext Files  Download fulltextFulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article  ;  ;  ; et al
Search for heavy neutral leptons in decays of W bosons produced in 13 TeV $pp$ collisions using prompt signatures in the ATLAS detector
The European physical journal / C 86(2), 153 () [10.1140/epjc/s10052-025-15191-w]  GO DBCoverage  Download fulltext Files  Download fulltextFulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article  ;  ;  ; et al
Observation of $t\bar{t}\gamma\gamma$ production at $\sqrt{s}=$13 TeV with the ATLAS detector
Physics letters / B 874, 19 ()  GO DBCoverage  Download fulltext Files  Download fulltextFulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article  ;  ;  ; et al
Transforming jet flavour tagging at ATLAS
Nature Communications 17(1), 541 () [10.1038/s41467-025-65059-6]  GO DBCoverage  Download fulltext Files  Download fulltextFulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article  ;  ;  ; et al
Evidence for the Collective Nature of Radial Flow in Pb+Pb Collisions with the ATLAS Detector
Physical review letters 136(3), 032301 () [10.1103/ldcn-r2lq]  GO arXiv  Download fulltext Files  Download fulltextFulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article  ;  ;  ; et al
Search for resonant leptoquark production via lepton-jet signatures in $pp$ collisions at $\sqrt{s} = 13$ TeV and $\sqrt{s} = 13.6$ TeV with the ATLAS detector
Journal of high energy physics 2025(12), 180 () [10.1007/JHEP12(2025)180]  GO OpenAccess  Download fulltext Files  Download fulltextFulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article  ;  ;  ; et al
Precision calibration of calorimeter signals in the ATLAS experiment using an uncertainty-aware neural network
SciPost physics 19(6), 155 () [10.21468/SciPostPhys.19.6.155]  GO OpenAccess  Download fulltext Files  Download fulltextFulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article  ;  ;  ; et al
The environmental impact, carbon emissions and sustainability of computing in the ATLAS experiment
The European physical journal / C 85(12), 1397 () [10.1140/epjc/s10052-025-14976-3]  GO OpenAccess  Download fulltext Files  Download fulltextFulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article  ;  ;  ; et al
Search for single production of vector-like quarks decaying into $W(\ellν)b$ in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector
Journal of high energy physics 12(12), 012 () [10.1007/JHEP12(2025)012]  GO OpenAccess  Download fulltext Files  Download fulltextFulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article  ;  ;  ; et al
Measurements of Higgs boson production via gluon–gluon fusion and vector-boson fusion using $H\rightarrow WW^*\rightarrow \ell \nu \ell \nu $ decays in pp collisions with the ATLAS detector and their effective field theory interpretations
The European physical journal / C 85(12), 1403 () [10.1140/epjc/s10052-025-14761-2]  GO OpenAccess  Download fulltext Files  Download fulltextFulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

All known publications ...
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 Record created 2023-08-27, last modified 2023-08-27
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