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Evidence of a J/ψK0...
Evidence of a J/ψK0S Structure in B0 → J/ψϕK0S Decays
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- Aaij, R. (author)
- Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands
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- Adlarson, Patrik (author)
- Uppsala universitet,Kärnfysik
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- Eklund, Lars (author)
- Uppsala universitet,Kärnfysik
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- Kupsc, Andrzej (author)
- Uppsala universitet,Kärnfysik
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- Zunica, G. (author)
- Univ Manchester, Dept Phys & Astron, Manchester, Lancs, England
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(creator_code:org_t)
- American Physical Society, 2023
- 2023
- English.
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In: Physical Review Letters. - : American Physical Society. - 0031-9007 .- 1079-7114. ; 131:13
- Related links:
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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
Subject headings
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- An amplitude analysis of B0 → J/ψϕK0S decays is performed using proton-proton collision data, corresponding to an integrated luminosity of 9 fb−1, collected with the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV. Evidence with a significance of 4.0 standard deviations of a structure in the J/ψK0S system, named Tθψs1(4000)0, is seen, with its mass and width measured to be 3991+12−10 +9−17 MeV/c2 and 105+29−25 +17−23 MeV, respectively, where the first uncertainty is statistical and the second systematic. The Tθψs1(4000)0 state is likely to be the isospin partner of the Tθψs1(4000)+ state, previously observed in the J/ψK+ system of the B+ → J/ψϕK+ decay. When isospin symmetry for the charged and neutral Tθψs1(4000) states is assumed, the signal significance increases to 5.4 standard deviations.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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