Measurement of the shape of the <i>B<sub>s</sub></i><SUP>0</SUP> → D<i><sub>s</sub></i>*<SUP>-</SUP> μ<SUP>+</SUP> ν<sub>μ</sub> differential decay rate



Aaij, R, Beteta, C Abellan, Ackernley, T, Adeva, B, Adinolfi, M, Afsharnia, H, Aidala, CA, Aiola, S, Ajaltouni, Z, Akar, S
et al (show 902 more authors) (2020) Measurement of the shape of the <i>B<sub>s</sub></i><SUP>0</SUP> → D<i><sub>s</sub></i>*<SUP>-</SUP> μ<SUP>+</SUP> ν<sub>μ</sub> differential decay rate. JOURNAL OF HIGH ENERGY PHYSICS, 2020 (12). 144-.

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Abstract

<jats:title>A<jats:sc>bstract</jats:sc></jats:title><jats:p>The shape of the<jats:inline-formula><jats:alternatives><jats:tex-math>$$ {B}_s^0\to {D}_s^{\ast -}{\mu}^{+}{\nu}_{\mu } $$</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:mo>→</mml:mo><mml:msubsup><mml:mi>D</mml:mi><mml:mi>s</mml:mi><mml:mrow><mml:mo>∗</mml:mo><mml:mo>−</mml:mo></mml:mrow></mml:msubsup><mml:msup><mml:mi>μ</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:msub><mml:mi>ν</mml:mi><mml:mi>μ</mml:mi></mml:msub></mml:math></jats:alternatives></jats:inline-formula>differential decay rate is obtained as a function of the hadron recoil parameter using proton-proton collision data at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 1.7 fb<jats:sup><jats:italic>−</jats:italic>1</jats:sup>collected by the LHCb detector. The<jats:inline-formula><jats:alternatives><jats:tex-math>$$ {B}_s^0\to {D}_s^{\ast -}{\mu}^{+}{\nu}_{\mu } $$</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:mo>→</mml:mo><mml:msubsup><mml:mi>D</mml:mi><mml:mi>s</mml:mi><mml:mrow><mml:mo>∗</mml:mo><mml:mo>−</mml:mo></mml:mrow></mml:msubsup><mml:msup><mml:mi>μ</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:msub><mml:mi>ν</mml:mi><mml:mi>μ</mml:mi></mml:msub></mml:math></jats:alternatives></jats:inline-formula>decay is reconstructed through the decays<jats:inline-formula><jats:alternatives><jats:tex-math>$$ {D}_s^{\ast -}\to {D}_s^{-}\gamma $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msubsup><mml:mi>D</mml:mi><mml:mi>s</mml:mi><mml:mrow><mml:mo>∗</mml:mo><mml:mo>−</mml:mo></mml:mrow></mml:msubsup><mml:mo>→</mml:mo><mml:msubsup><mml:mi>D</mml:mi><mml:mi>s</mml:mi><mml:mo>−</mml:mo></mml:msubsup><mml:mi>γ</mml:mi></mml:math></jats:alternatives></jats:inline-formula>and<jats:inline-formula><jats:alternatives><jats:tex-math>$$ {D}_s^{-}\to {K}^{-}{K}^{+}{\pi}^{-} $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msubsup><mml:mi>D</mml:mi><mml:mi>s</mml:mi><mml:mo>−</mml:mo></mml:msubsup><mml:mo>→</mml:mo><mml:msup><mml:mi>K</mml:mi><mml:mo>−</mml:mo></mml:msup><mml:msup><mml:mi>K</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mi>π</mml:mi><mml:mo>−</mml:mo></mml:msup></mml:math></jats:alternatives></jats:inline-formula>. The differential decay rate is fitted with the Caprini-Lellouch-Neubert (CLN) and Boyd-Grinstein-Lebed (BGL) parametrisations of the form factors, and the relevant quantities for both are extracted.</jats:p>

Item Type: Article
Uncontrolled Keywords: B physics, Flavor physics, Hadron-Hadron scattering (experiments)
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 01 Sep 2021 10:36
Last Modified: 14 Mar 2024 23:11
DOI: 10.1007/JHEP12(2020)144
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3134994