Anamplitude analysis offlavor-untagged B0s → J=ψp¯p decays is performed using a sample of 797 31 decays reconstructed with the LHCb detector. The data, collected in proton-proton collisions between 2011 and 2018, correspond to an integrated luminosity of 9 fb−1. Evidence for a new structure in the J=ψp and J=ψ ¯p systems with a mass of 4337þ7 þ2 −4 −2 MeV and a width of 29þ26 þ14 −12 −14 MeV is found, where the first uncertainty is statistical and the second systematic, with a significance in the range of 3.1 to 3.7σ, depending on the assigned JP hypothesis.

Evidence for a new structure in the J /ψp and J /ψ p ¯ systems in Bs0 →J /ψp p ¯ decays / Aaij, R., Abdelmotteleb, A.S.W., Abellán Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., Aidala, C.A., Aiola, S., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Alfonso Albero, A., Aliouche, Z., Alkhazov, G., Alvarez Cartelle, P., Amato, S., Amey, J.L., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 128:6(2022). [10.1103/PhysRevLett.128.062001]

Evidence for a new structure in the J /ψp and J /ψ p ¯ systems in Bs0 →J /ψp p ¯ decays

Casse, G.;Sarti, A.;
2022

Abstract

Anamplitude analysis offlavor-untagged B0s → J=ψp¯p decays is performed using a sample of 797 31 decays reconstructed with the LHCb detector. The data, collected in proton-proton collisions between 2011 and 2018, correspond to an integrated luminosity of 9 fb−1. Evidence for a new structure in the J=ψp and J=ψ ¯p systems with a mass of 4337þ7 þ2 −4 −2 MeV and a width of 29þ26 þ14 −12 −14 MeV is found, where the first uncertainty is statistical and the second systematic, with a significance in the range of 3.1 to 3.7σ, depending on the assigned JP hypothesis.
2022
Particles and Fields
01 Pubblicazione su rivista::01a Articolo in rivista
Evidence for a new structure in the J /ψp and J /ψ p ¯ systems in Bs0 →J /ψp p ¯ decays / Aaij, R., Abdelmotteleb, A.S.W., Abellán Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., Aidala, C.A., Aiola, S., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Alfonso Albero, A., Aliouche, Z., Alkhazov, G., Alvarez Cartelle, P., Amato, S., Amey, J.L., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 128:6(2022). [10.1103/PhysRevLett.128.062001]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1672047
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