Тяжёлые адроны ФИАН / 9
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X(3872) in B decays
in case of B+ there is additional contribution from DD* rescattering (for
molecular model)
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X(3872) in B decays
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X(3872) in B decays |
?
B(B+→J/ψK+), |
B(B0→J/ψK0), |
and B(B0→J/ψK*0) are close (in ±20%) |
B(B+→ψ(2S)K+), |
B(B0→ψ(2S)K0), |
and B(B0→ψ(2S)K*0) are consistent (in ±20%) |
while
B(B+→X(3872)K+) is ~2 times larger than B(B0→X(3872)K0) and B(B0→X(3872)K*0)
Theoretical paper “The X(3872) tetraquarks in B and B_s decays” [arXiv:2005.08764 by L.Maiani, A.D.Polosa,
and V.Riquer] explains the discussed ratios of branching fractions in tetraquark model of X(3872)
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X(3872) production in hadron collisions
https://arxiv.org/pdf/2009.06619.pdf
https://arxiv.org/abs/1610.09303
???
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Observation of ω contribution
https://arxiv.org/pdf/2204.12597
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DDbar spectroscopy near threshold
https://arxiv.org/pdf/1903.12240.pdf
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X(3823)
4σ
https://arxiv.org/pdf/1503.08203.pdf
https://arxiv.org/pdf/1304.3975.pdf
https://arxiv.org/pdf/2005.13422.pdf
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DDbar spectroscopy near threshold
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Hidden charm hidden strange tetraquark
2022
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9 exotic states in B+ → J/ψ φ K decay
2021 LHCb https://arxiv.org/abs/2103.01803
First X(4140) seen at CDF https://inspirehep.net/literature/815352 , then confirmed (observed) at CMS https://inspirehep.net/literature/1255647 but not seen at LHCb https://inspirehep.net/literature/1090150 . Later LHCb confirmed X(4140) observing 4 states decaying into J/ψφ, and in 2021, with full amplitude analysis, now we see 7 states decaying into J/ψφ and two states decaying into J/ψK+. The latter ones are manifestly exotic
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