Data-driven analyses and model-independent fits for present <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mi>b</mml:mi> <mml:mo stretchy="false">→</mml:mo> <mml:mi>s</mml:mi> <mml:mo>ℓ</mml:mo> <mml:mo>ℓ</mml:mo> </m
We present a critical assessment of the present <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"> <a:mi>B</a:mi> </a:math> anomalies in the exclusive <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"> <c:mi>b</c:mi> <c:mo stretchy="false">→</c:mo> <c:mi>s</c:mi> <c:mo>ℓ</c:mo> <c:mo>ℓ</c:mo> </c:math> mode based on the QCD factorization (QCDf) approach. In particular, we analyze the impact of different local form factor calculations and of the largest bin in the low- <f:math xmlns:f="http://www.w3.org/1998/Math/MathML" display="inline"> <f:msup> <f:mi>q</f:mi> <f:mn>2</f:mn> </f:msup> </f:math> region. We also present a model-independent analysis of the new results of the LHCb and CMS experiments on the <h:math xmlns:h="http://www.w3.org/1998/Math/MathML" display="inline"> <h:mi>B</h:mi> <h:mo stretchy="false">→</h:mo> <h:msup> <h:mi>K</h:mi> <h:mo>*</h:mo> </h:msup> <h:msup> <h:mi>μ</h:mi> <h:mo>+</h:mo> </h:msup> <h:msup> <h:mi>μ</h:mi> <h:mo>−</h:mo> </h:msup> </h:math> angular observables. In addition, we update the global fit by including all <k:math xmlns:k="http://www.w3.org/1998/Math/MathML" display="inline"> <k:mi>b</k:mi> <k:mo stretchy="false">→</k:mo> <k:mi>s</k:mi> </k:math> observables incorporating the new data from CMS and the LHCb. In these analyses, we use 10% or higher guesstimates of the nonfactorizable power corrections as additional uncertainties, serving as a placeholder for robust estimates of these contributions. Updating earlier results, we also analyze the combined LHCb and CMS data on the <n:math xmlns:n="http://www.w3.org/1998/Math/MathML" display="inline"> <n:mi>B</n:mi> <n:mo stretchy="false">→</n:mo> <n:msup> <n:mi>K</n:mi> <n:mo>*</n:mo> </n:msup> <n:msup> <n:mi>μ</n:mi> <n:mo>+</n:mo> </n:msup> <n:msup> <n:mi>μ</n:mi> <n:mo>−</n:mo> </n:msup> </n:math> angular observables using data-driven approaches to find indications of whether these tensions between the QCDf predictions and the present data are due to underestimated subleading hadronic contributions or due to new physics effects.
Authors
- Karl J. Friston
Institutions
- Université Claude Bernard Lyon 1 (FR)
- Institut Universitaire de France (FR)
- Institute of Nuclear Physics of Lyon (FR)
- Institut de Physique des 2 Infinis de Lyon (FR)
- European Organization for Nuclear Research (CH)
Publication Details
- Journal
- Physical review. D/Physical review. D.
- Published
- 2025-11-24
- DOI
- https://doi.org/10.1103/bc5h-8jm3
- Citations
- 2
- Primary Topic
- Particle physics theoretical and experimental studies
- Type
- article
- Field-Weighted Citation Impact
- 3.74