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FAIME

Flavour Anomalies with advanced particle Identification MEthods

Grant period	2020-10-01 - 2025-09-30
Funding body	European Union
Call number	ERC-2019-ADG
Grant number	884719
Identifier	G:(EU-Grant)884719

Note: In the proposed research, precision measurements of rare processes involving heavy quarks and leptons will be used to search for new phenomena beyond the Standard Model, popularly known as New Physics. This research at the intensity frontier is complementary to searches at the highest achievable energies carried out at the LHC proton-proton collider. Indications of very interesting discrepancies have recently been observed by three experiments (LHCb, BaBar, and Belle) between their results and predictions of the Standard Model in certain classes of decays of B mesons, which involve leptons in the final state. The proposed project will address these issues by using large event samples collected with the Belle II detector at a new electron-positron collider, SuperKEKB. By investigating a broad range of selected rare decays of B and D, the project will attempt to provide a definite answer on the violation of Lepton Flavour Universality, one of the cornerstones of our current understanding of the interactions among the elementary particles. Based on the results of these studies, the final stages of the project will be devoted to possible explanations and to studies of transitions that would be based on related new physics phenomena. Within the proposed research programme, novel, highly advanced identification methods for charged particles will also be developed. They will be of crucial importance to suppress backgrounds arising from other, much more abundant decays in measurements of rare processes where the sensitivity to a possible contribution of New Physics is largest. The proposed research will strongly benefit from the fact that the same group that contributed substantially to the physics programme, concept, design, and construction of the detector, will also carry out the development of novel analysis methods, their calibration and optimization for individual reactions.

European Comission

Recent Publications

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Journal Article Adachi, I. ; Aggarwal, L. ; Ahmed, H.Extern* ; et al
Search for a Dark Higgs Boson Produced in Association with Inelastic Dark Matter at the Belle II Experiment
Physical review letters 135(13), 131801 (2025) [10.1103/37w5-glpp]2025 arXiv Files Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

Journal Article Adachi, I. ; Ahn, Y. ; Aihara, H.Extern* ; et al
Search for lepton flavor-violating decay modes B$^{0}$→ K$^{*0}$τ$^{±}$ℓ$^{∓}$ (ℓ = e, μ) with hadronic B-tagging at Belle and Belle II
Journal of high energy physics 08(8), 184 (2025) [10.1007/JHEP08(2025)184]2025 DBCoverage Files Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

Journal Article Adachi, I. ; Adamczyk, K. ; Aggarwal, L. ; et al
Test of lepton flavor universality with measurements of R(D+) and R(D*+) using semileptonic B tagging at the Belle II experiment
Physical review / D 112(3), 032010 (2025) [10.1103/fmn3-h8fy]2025 arXiv Files Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

Journal Article Adachi, I. ; Aggarwal, L. ; Ahmed, H.Extern* ; et al
Measurement of the branching fraction of Λc+→pKS0π0 at Belle
Physical review / D 112(1), 012013 (2025) [10.1103/4mnw-tvks]2025 arXiv Files Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

Journal Article Adachi, I. ; Adamczyk, K. M. ; Aggarwal, L. ; et al
Search for Lepton-Flavor-Violating Decay Modes B0→KS0τ±ℓ∓ with Hadronic B Tagging at Belle and Belle II
Physical review letters 135(4), 041801 (2025) [10.1103/yzvh-v3hm]2025 arXiv Files Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

Journal Article Adachi, I. ; Aggarwal, L. ; Aihara, H.Extern* ; et al
Determination of $|V_{ub}|$ from simultaneous measurements of untagged $B^0\to\pi^- \ell^+ \nu_{\ell}$ and $B^+\to\rho^0 \ell^+\nu_{\ell}$ decays
Physical review / D 111(11), 112009 (2025) [10.1103/jnwn-ts6q]2025 OpenAccess Files Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

Preprint Abumusabh, M. ; Adachi, I. ; Aggarwal, L. ; et al
Measurement of time-dependent $CP$ asymmetries in $B^0 \to K_{\rm S}^0 \: π^{+} π^{-} γ$ decays at Belle and Belle II
[10.3204/PUBDB-2025-04280] OpenAccess Files Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

Preprint Abumusabh, M. ; Adachi, I. ; Ahmed, H. ; et al
Search for $CP$ violation in $Ξ_c^+\toΣ^+h^+h^-$ and $Λ_c^+\to ph^+h^-$ at Belle II
[10.3204/PUBDB-2025-04279] OpenAccess Files Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

Preprint Abumusabh, M. ; Adachi, I. ; Aggarwal, L. ; et al
Search for $e^+ e^- \to \gamma X_{bJ}$ ($J$ = 0, 1, 2) near $\sqrt{s}$ = 10.746 GeV at Belle II
arXiv Files Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

Journal Article Adachi, I. ; Aggarwal, L. ; Ahmed, H.Extern* ; et al
Measurement of the CP asymmetry in $D^+ \to \pi^+ \pi^0$ decays at Belle II
Physical review / D 112(3), L031101 (2025) [10.1103/3kqk-ldm4]2025 OpenAccess Files Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

All known publications ...
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Record created 2021-10-11, last modified 2023-02-10

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