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000600391 1001_ $$00000-0002-0615-4399$$aDe Bruyn, Kristof$$b0$$eCorresponding author
000600391 245__ $$aNew physics in B$_{q}$ $^{0}$– mixing: present challenges, prospects, and implications for
000600391 260__ $$aBristol$$bIOP Publ.$$c2023
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000600391 500__ $$a45 pages, 14 figures and 6 tables. This version matches the published version
000600391 520__ $$aThe 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.
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000600391 650_7 $$2INSPIRE$$aCKM matrix: unitarity
000600391 650_7 $$2INSPIRE$$anew physics: search for
000600391 650_7 $$2INSPIRE$$amixing
000600391 650_7 $$2INSPIRE$$atension
000600391 650_7 $$2INSPIRE$$abottom meson: branching ratio
000600391 650_7 $$2INSPIRE$$abottom meson: decay
000600391 650_7 $$2autogen$$aB-meson mixing
000600391 650_7 $$2autogen$$aflavour physics
000600391 650_7 $$2autogen$$anew physics searches
000600391 650_7 $$2autogen$$aunitarity Triangle
000600391 650_7 $$2autogen$$aCKM parameters
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000600391 7001_ $$00000-0001-7529-6297$$aFleischer, Robert$$b1
000600391 7001_ $$00000-0001-9479-0151$$aMalami, Eleftheria$$b2
000600391 7001_ $$0P:(DE-H253)PIP1090382$$aVliet, Philine Julia van$$b3
000600391 773__ $$0PERI:(DE-600)1472964-7$$a10.1088/1361-6471/acab1d$$gVol. 50, no. 4, p. 045003 -$$n4$$p045003$$tJournal of physics / G$$v50$$x0305-4616$$y2023
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