Skip to main content

Research Repository

Advanced Search

Outputs (11)

Constraining |V cs | and physics beyond the Standard Model from exclusive (semi)leptonic charm decays (2024)
Journal Article
Bolognani, C., Reboud, M., van Dyk, D., & Vos, K. K. (2024). Constraining |V cs | and physics beyond the Standard Model from exclusive (semi)leptonic charm decays. Journal of High Energy Physics, 2024(9), Article 99. https://doi.org/10.1007/jhep09%282024%29099

We study the available data on exclusive leptonic and semileptonic c → sℓ+ν decays within the Standard Model and beyond. Our analysis accounts for theory correlations between the relevant hadronic matrix elements through application of dispersive bou... Read More about Constraining |V cs | and physics beyond the Standard Model from exclusive (semi)leptonic charm decays.

Constructing model-agnostic likelihoods, a method for the reinterpretation of particle physics results (2024)
Journal Article
Gärtner, L., Hartmann, N., Heinrich, L., Horstmann, M., Kuhr, T., Reboud, M., Stefkova, S., & van Dyk, D. (2024). Constructing model-agnostic likelihoods, a method for the reinterpretation of particle physics results. The European Physical Journal C, 84(7), Article 693. https://doi.org/10.1140/epjc/s10052-024-13038-4

Experimental High Energy Physics has entered an era of precision measurements. However, measurements of many of the accessible processes assume that the final states’ underlying kinematic distribution is the same as the Standard Model prediction. Thi... Read More about Constructing model-agnostic likelihoods, a method for the reinterpretation of particle physics results.

Maximizing the physics potential of B±→π±μ+μ− decays (2024)
Journal Article
Marshall, A. M., McCann, M. A., Patel, M., Petridis, K. A., Reboud, M., & van Dyk, D. (2024). Maximizing the physics potential of B±→π±μ+μ− decays. Physical Review D, 109(11), Article 116013. https://doi.org/10.1103/physrevd.109.116013

We present a method that maximizes the experimental sensitivity to new physics contributions in 𝐵±→𝜋±⁢𝜇+⁢𝜇− decays. This method relies on performing an unbinned maximum likelihood fit to both the measured dimuon 𝑞2 distribution of 𝐵±→𝜋±⁢𝜇+⁢𝜇− decays,... Read More about Maximizing the physics potential of B±→π±μ+μ− decays.

Analysis of the ψ ( 3770 ) resonance in line with unitarity and analyticity constraints (2024)
Journal Article
Hanhart, C., Kürten, S., Reboud, M., & van Dyk, D. (2024). Analysis of the ψ ( 3770 ) resonance in line with unitarity and analyticity constraints. The European Physical Journal C, 84(5), Article 483. https://doi.org/10.1140/epjc/s10052-024-12785-8

We study the inclusive and exclusive cross sections of e+e-→hadrons for center-of-mass energies between 3.70 and 3.83GeV to infer the mass, width, and couplings of the ψ(3770) resonance. By using a coupled-channel K-matrix approach, we setup our anal... Read More about Analysis of the ψ ( 3770 ) resonance in line with unitarity and analyticity constraints.

Dispersive analysis of B → K (*) and B s → ϕ form factors (2023)
Journal Article
Gubernari, N., Reboud, M., van Dyk, D., & Virto, J. (2023). Dispersive analysis of B → K (*) and B s → ϕ form factors. Journal of High Energy Physics, 2023(12), Article 153. https://doi.org/10.1007/jhep12%282023%29153

We propose a stronger formulation of the dispersive (or unitarity) bounds à la Boyd-Grinstein-Lebed (BGL), which are commonly applied in analyses of the hadronic form factors for B decays. In our approach, the existing bounds are split into several n... Read More about Dispersive analysis of B → K (*) and B s → ϕ form factors.

50 Years of quantum chromodynamics (2023)
Journal Article
Gross, F., Klempt, E., Brodsky, S. J., Buras, A. J., Burkert, V. D., Heinrich, G., …Zhou, X. (2023). 50 Years of quantum chromodynamics. The European Physical Journal C, 83(12), Article 1125. https://doi.org/10.1140/epjc/s10052-023-11949-2

Quantum Chromodynamics, the theory of quarks and gluons, whose interactions can be described by a local SU(3) gauge symmetry with charges called “color quantum numbers”, is reviewed; the goal of this review is to provide advanced Ph.D. students a com... Read More about 50 Years of quantum chromodynamics.

Testable likelihoods for beyond-the-standard model fits (2023)
Journal Article
Beck, A., Reboud, M., & van Dyk, D. (2023). Testable likelihoods for beyond-the-standard model fits. The European Physical Journal C, 83(12), Article 1115. https://doi.org/10.1140/epjc/s10052-023-12294-0

Studying potential BSM effects at the precision frontier requires accurate transfer of information from low-energy measurements to high-energy BSM models. We propose to use normalising flows to construct likelihood functions that achieve this transfe... Read More about Testable likelihoods for beyond-the-standard model fits.

New determination of |V ub /V cb | from B s 0 → { K −, D s − } μ + ν (2023)
Journal Article
Bolognani, C., van Dyk, D., & Vos, K. K. (2023). New determination of |V ub /V cb | from B s 0 → { K −, D s − } μ + ν. Journal of High Energy Physics, 2023(11), Article 82. https://doi.org/10.1007/jhep11%282023%29082

We update the full set of B¯s → K form factors using light-cone sum rules with an on-shell kaon. Our approach determines the relevant sum rule parameters — the duality thresholds — from a Bayesian fit for the first time. Using a modified version of t... Read More about New determination of |V ub /V cb | from B s 0 → { K −, D s − } μ + ν.

Toward a complete description of b → uℓ − ν ¯ within the Weak Effective Theory decays (2023)
Journal Article
Leljak, D., Melić, B., Novak, F., Reboud, M., & van Dyk, D. (2023). Toward a complete description of b → uℓ − ν ¯ within the Weak Effective Theory decays. Journal of High Energy Physics, 2023(8), Article 63. https://doi.org/10.1007/jhep08%282023%29063

We fit the available data on exclusive semileptonic b → uℓ−ν¯ decays within the Standard Model and in the Weak Effective Theory. Assuming Standard Model dynamics, we find Vub=3.59−0.12+0.13×10−3. Lifting this assumption, we obtain stringent constrain... Read More about Toward a complete description of b → uℓ − ν ¯ within the Weak Effective Theory decays.