Search for the decay <i>B</i><SUP>0</SUP> → φμ<SUP>+</SUP> μ<SUP>-</SUP>



Aaij, R, Abdelmotteleb, ASW, Abellan Beteta, C, Abudinen, F, Ackernley, T, Adeva, B, Adinolfi, M, Afsharnia, H, Agapopoulou, C, Aidala, CA
et al (show 985 more authors) (2022) Search for the decay <i>B</i><SUP>0</SUP> → φμ<SUP>+</SUP> μ<SUP>-</SUP>. JOURNAL OF HIGH ENERGY PHYSICS, 2022 (5). 67-.

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Abstract

<jats:title>A<jats:sc>bstract</jats:sc></jats:title><jats:p>A search for the decay<jats:italic>B</jats:italic><jats:sup>0</jats:sup><jats:italic>→ ϕμ</jats:italic><jats:sup>+</jats:sup><jats:italic>μ</jats:italic><jats:sup><jats:italic>−</jats:italic></jats:sup>is performed using proton-proton collisions at centre-of-mass energies of 7, 8, and 13 TeV collected by the LHCb experiment and corresponding to an integrated luminosity of 9 fb<jats:sup><jats:italic>−</jats:italic>1</jats:sup>. No evidence for the<jats:italic>B</jats:italic><jats:sup>0</jats:sup><jats:italic>→ ϕμ</jats:italic><jats:sup>+</jats:sup><jats:italic>μ</jats:italic><jats:sup><jats:italic>−</jats:italic></jats:sup>decay is found and an upper limit on the branching fraction, excluding the<jats:italic>ϕ</jats:italic>and charmonium regions in the dimuon spectrum, of 4<jats:italic>.</jats:italic>4<jats:italic>×</jats:italic>10<jats:sup><jats:italic>−</jats:italic>3</jats:sup>at a 90% credibility level, relative to that of the<jats:inline-formula><jats:alternatives><jats:tex-math>$$ {B}_s^0 $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msubsup><mml:mi>B</mml:mi><mml:mi>s</mml:mi><mml:mn>0</mml:mn></mml:msubsup></mml:math></jats:alternatives></jats:inline-formula><jats:italic>→ ϕμ</jats:italic><jats:sup>+</jats:sup><jats:italic>μ</jats:italic><jats:sup><jats:italic>−</jats:italic></jats:sup>decay, is established. Using the measured<jats:inline-formula><jats:alternatives><jats:tex-math>$$ {B}_s^0 $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msubsup><mml:mi>B</mml:mi><mml:mi>s</mml:mi><mml:mn>0</mml:mn></mml:msubsup></mml:math></jats:alternatives></jats:inline-formula><jats:italic>→ ϕμ</jats:italic><jats:sup>+</jats:sup><jats:italic>μ</jats:italic><jats:sup><jats:italic>−</jats:italic></jats:sup>branching fraction and assuming a phase-space model, the absolute branching fraction of the decay<jats:italic>B</jats:italic><jats:sup>0</jats:sup><jats:italic>→ ϕμ</jats:italic><jats:sup>+</jats:sup><jats:italic>μ</jats:italic><jats:sup><jats:italic>−</jats:italic></jats:sup>in the full<jats:italic>q</jats:italic><jats:sup>2</jats:sup>range is determined to be less than 3<jats:italic>.</jats:italic>2<jats:italic>×</jats:italic>10<jats:sup><jats:italic>−</jats:italic>9</jats:sup>at a 90% credibility level.</jats:p>

Item Type: Article
Uncontrolled Keywords: B Physics, Branching fraction, Hadron-Hadron Scattering, Rare Decay
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 31 Aug 2022 10:17
Last Modified: 14 Mar 2024 22:50
DOI: 10.1007/JHEP05(2022)067
Open Access URL: https://link.springer.com/content/pdf/10.1007/JHEP...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3162852