Dr. Agni Bethani
Postdoctoral Research Associate
Data analysis at the ATLAS experiment, LHC.
Collider physicsB-physics
Research theme
B-physics & quarkonium
Heavy-flavour spectroscopy — including the first new particle found at the LHC — rare decays, and CP-violation in the B-meson system.
Heavy-flavour hadrons are a precision window onto both QCD and physics beyond the Standard Model. Small deviations in their production, spectra and decays can reveal new particles and interactions.
Key areas
I designed the analysis and led the team that observed the χb(3P) — the first new particle discovered at the Large Hadron Collider, and a PRL Editors' Suggestion covered widely in the media. My group has worked extensively on quarkonium production and spectroscopy, rare B-meson decays, and CP-violation in the B-system.
Active now
Recent work includes searches for narrow exotic resonances in multi-muon final states at ATLAS, and quarkonium studies feeding into the QCD programme.
Selected publications
-
Published,preprint Prospects for quarkonium studies at the High-Luminosity LHCQCD B-physics
Explainer
A community roadmap for quarkonium physics at the High-Luminosity LHC, covering pp, pA and AA collisions in both collider and fixed-target modes. Five threads run through it: associated production of J/ψ and Υ with other hard particles; low-pT χ_{c,b} and η_{c,b} spectroscopy; quarkonia as probes of gluon PDFs, nuclear PDFs and the full transverse-momentum-dependent / generalised parton distribution family; the gluon Sivers effect; and quarkonia as a thermometer for the quark–gluon plasma in heavy-ion collisions.
-
Published,preprint Measurement of J/ψ production in association with a W± boson with pp data at 8 TeVB-physics QCD Collider / ATLAS
-
Published,preprint Search for Higgs boson decays into a Z boson and a light hadronically decaying resonance using 13 TeV pp collision data from the ATLAS detectorB-physics Collider / ATLAS
-
note Study of J/ψ resonances in Λ0b → J/ψpK− decays in pp collisions at √s = 7 and 8 TeV with the ATLAS detectorATLAS-CONF-2019-048B-physics Collider / ATLAS
-
note Production measurements of ψ(2S) and X(3872) → J/ψπ+π− at √s = 8 TeV with the ATLAS detectorATLAS-CONF-2016-028B-physics Collider / ATLAS
-
note Measurement of the prompt J/ψ pair production cross-section in pp collisions at √s = 8 TeV with the ATLAS detectorATLAS-CONF-2016-047B-physics QCD Collider / ATLAS
Recent talks
Related news
- First new particle discovered at the LHC — the χb(3P) Widely covered in international media, including the BBC.
- χb(3P) observation selected as a PRL Editors' Suggestion
People
Dr. Yi Yang
PhD student (Indiana University) · 2008–2012
Upsilon production studies, Di-muons near the Upsilon resonances in ATLAS.
Collider physicsB-physics
Ally Suen
MPhys student · 2016–17
First extraction of the direct J/ψ production rate using LHC pp collision data.
Collider physicsB-physics
Robert Vallance
MPhys student · 2016
Long-distance matrix elements for charmonium production in Non-Relativistic QCD.
Collider physicsB-physics
Vilius Cepaitis
Summer research intern · 2016
Precision measurement of the branching fraction of the ψ(2S) meson into di-muon pairs using LHC pp collision data.
Collider physicsB-physics