Home > Publications database > New physics in B$_{q}$ $^{0}$– mixing: present challenges, prospects, and implications for > print

001     600391
005     20250724132629.0
024 7 _ |a 10.1088/1361-6471/acab1d
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024 7 _ |a 0305-4616
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024 7 _ |a 0954-3899
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024 7 _ |a 1361-6471
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024 7 _ |a 2057-763X
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024 7 _ |a arXiv:2208.14910
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024 7 _ |a 10.3204/PUBDB-2023-07948
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100 1 _ |a De Bruyn, Kristof
|0 0000-0002-0615-4399
|b 0
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245 _ _ |a New physics in B$_{q}$ $^{0}$– mixing: present challenges, prospects, and implications for
260 _ _ |a Bristol
|c 2023
|b IOP Publ.
336 7 _ |a article
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500 _ _ |a 45 pages, 14 figures and 6 tables. This version matches the published version
520 _ _ |a The phenomenon of B$^{0}$ $_{q}$– mixing (q = d, s) provides a sensitive probe for physics beyond the Standard Model (SM). We explore the corresponding space for New Physics left through the current data, having a careful look at analyses of the Unitarity Triangle that are needed for the SM predictions of the B $_{q}$ mixing parameters. In particular, we explore the impact of tensions between inclusive and exclusive determinations of the CKM matrix elements ∣V $_{ub}$∣ and ∣V $_{cb}$∣. Moreover, we focus on the angle γ of the Unitarity Triangle, comparing measurements from B → DK and B → π π, ρ π, ρ ρ decays, where the latter are typically interpreted in terms of the angle α. We discuss various scenarios and present the corresponding state-of-the-art constraints on the New Physics parameters of B$_{q}$ $^{0}$– mixing. We point out that these results have an interesting application in the analysis of rare decays, allowing us to minimise the impact of CKM parameters in the search for New Physics. In view of the high-precision era, we make future projections. Interestingly, we find that for the extraction of the New Physics parameters in the B $_{d}$ system the determination of the apex of the Unitarity Triangle results in a key limiting factor. By contrast, the corresponding impact is negligible for the B $_{s}$ system, making it a promising candidate to reveal sources of New Physics.
536 _ _ |a 611 - Fundamental Particles and Forces (POF4-611)
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650 _ 7 |a CKM matrix: unitarity
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650 _ 7 |a new physics: search for
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650 _ 7 |a mixing
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650 _ 7 |a tension
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650 _ 7 |a bottom meson: branching ratio
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650 _ 7 |a bottom meson: decay
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650 _ 7 |a B-meson mixing
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650 _ 7 |a flavour physics
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650 _ 7 |a new physics searches
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650 _ 7 |a unitarity Triangle
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650 _ 7 |a CKM parameters
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693 _ _ |0 EXP:(DE-MLZ)NOSPEC-20140101
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700 1 _ |a Fleischer, Robert
|0 0000-0001-7529-6297
|b 1
700 1 _ |a Malami, Eleftheria
|0 0000-0001-9479-0151
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700 1 _ |a Vliet, Philine Julia van
|0 P:(DE-H253)PIP1090382
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773 _ _ |a 10.1088/1361-6471/acab1d
|g Vol. 50, no. 4, p. 045003 -
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|t Journal of physics / G
|v 50
|y 2023
|x 0305-4616
856 4 _ |u https://bib-pubdb1.desy.de/record/600391/files/De_Bruyn_2023_J._Phys._G__Nucl._Part._Phys._50_045003.pdf
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