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Observation of the ...
Observation of the B0s â D*+ D*- decay
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- Aaij, R. (författare)
- Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands;Univ Groningen, Van Swinderen Inst, Groningen, Netherlands;Univ Maastricht, Maastricht, Netherlands
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- Adlarson, Patrik (författare)
- Uppsala universitet,Kärnfysik,School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
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- Eklund, Lars (författare)
- Uppsala universitet,Kärnfysik,School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
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- Kupsc, Andrzej (författare)
- Uppsala universitet,Kärnfysik,School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
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- Zunica, G. (författare)
- Univ Manchester, Dept Phys & Astron, Manchester, Lancs, England
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(creator_code:org_t)
- Springer Nature, 2023
- 2023
- Engelska.
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Ingår i: Journal of High Energy Physics (JHEP). - : Springer Nature. - 1126-6708 .- 1029-8479. ; :7
- Relaterad länk:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The first observation of the B-s(0) -> D*+ D*- decay and the measurement of its branching ratio relative to the B-0 -> D*+ D*(-) decay are presented. The data sample used corresponds to an integrated luminosity of 9 fb(-1) of proton-proton collisions recorded by the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV between 2011 and 2018. The decay is observed with more than 10 standard deviations and the time-integrated ratio of branching fractions is determined to be [GRAPHICS] . where the first uncertainty is statistical, the second systematic and the third due to the uncertainty of the fragmentation fraction ratio f(s)/f(d). The B-s(0) -> D*(+) D*(-) branching fraction is calculated to be [GRAPHICS] . where the fourth uncertainty is due to the B-0 -> D*(+) D*(-) branching fraction. These results are calculated using the average B-s(0) meson lifetime in simulation. Correction factors are reported for scenarios where either a purely heavy or a purely light B-s(0) eigenstate is considered.
Ämnesord
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Nyckelord
- Branching fraction
- Hadron-Hadron Scattering
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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