Evidence for a New Structure in the J /ψp and J /ψ p ¯ Systems in Bs0 →J /ψp p ¯ Decays

LHCb collaboration

doi: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

LHCb collaboration

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

An amplitude analysis of flavor-untagged Bs0→J/ψpp¯ 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/ψp¯ systems with a mass of 4337-4+7 -2+2 MeV and a width of 29-12+26 -14+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.

Original language	English
Article number	062001
Number of pages	11
Journal	Physical Review Letters
Volume	128
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.128.062001
Publication status	Published - 11 Feb 2022

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@article{a46ed63d1a0246fdbd4c9a4d03f4967c,

title = "Evidence for a New Structure in the J /ψp and J /ψ p ¯ Systems in Bs0 →J /ψp p ¯ Decays",

abstract = "An amplitude analysis of flavor-untagged Bs0→J/ψpp¯ 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/ψp¯ systems with a mass of 4337-4+7 -2+2 MeV and a width of 29-12+26 -14+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.",

author = "R. Aaij and A.S.W. ABdelmotteleb and C.A. Beteta and T. Ackernley and B. Adeva and M. Adinolfi and H. Afsharnia and C.A. Aidala and S. Aiola and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and A.A. Albero and Z. Aliouche and G. Alkhazov and P.A. Cartelle and S. Amato and J.L. Amey and Y. Amhis and L. An and L. Anderlini and A. Andreianov and M. Andreotti and F. Archilli and A. Artamonov and M. Artuso and K. Arzymatov and E. Aslanides and M. Atzeni and B. Audurier and S. Bachmann and M. Bachmayer and J.J. Back and P.B. Rodriguez and V. Balagura and W. Baldini and J.B. Leite and R.J. Barlow and S. Barsuk and W. Barter and M. Bartolini and F. Baryshnikov and J.M. Basels and S. Bashir and \{LHCb collaboration\} and \{De Vries\}, J.A. and M. Merk and C.J. Pawley and K. Vos",

year = "2022",

month = feb,

day = "11",

doi = "10.1103/PhysRevLett.128.062001",

language = "English",

volume = "128",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "6",

}

TY - JOUR

T1 - Evidence for a New Structure in the J /ψp and J /ψ p ¯ Systems in Bs0 →J /ψp p ¯ Decays

AU - Aaij, R.

AU - ABdelmotteleb, A.S.W.

AU - Beteta, C.A.

AU - Ackernley, T.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Afsharnia, H.

AU - Aidala, C.A.

AU - Aiola, S.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Albero, A.A.

AU - Aliouche, Z.

AU - Alkhazov, G.

AU - Cartelle, P.A.

AU - Amato, S.

AU - Amey, J.L.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andreianov, A.

AU - Andreotti, M.

AU - Archilli, F.

AU - Artamonov, A.

AU - Artuso, M.

AU - Arzymatov, K.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bachmann, S.

AU - Bachmayer, M.

AU - Back, J.J.

AU - Rodriguez, P.B.

AU - Balagura, V.

AU - Baldini, W.

AU - Leite, J.B.

AU - Barlow, R.J.

AU - Barsuk, S.

AU - Barter, W.

AU - Bartolini, M.

AU - Baryshnikov, F.

AU - Basels, J.M.

AU - Bashir, S.

AU - LHCb collaboration

AU - De Vries, J.A.

AU - Merk, M.

AU - Pawley, C.J.

AU - Vos, K.

PY - 2022/2/11

Y1 - 2022/2/11

N2 - An amplitude analysis of flavor-untagged Bs0→J/ψpp¯ 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/ψp¯ systems with a mass of 4337-4+7 -2+2 MeV and a width of 29-12+26 -14+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.

AB - An amplitude analysis of flavor-untagged Bs0→J/ψpp¯ 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/ψp¯ systems with a mass of 4337-4+7 -2+2 MeV and a width of 29-12+26 -14+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.

U2 - 10.1103/PhysRevLett.128.062001

DO - 10.1103/PhysRevLett.128.062001

M3 - Article

C2 - 35213204

SN - 0031-9007

VL - 128

JO - Physical Review Letters

JF - Physical Review Letters

IS - 6

M1 - 062001

ER -

Evidence for a New Structure in the J /ψp and J /ψ p ¯ Systems in Bs0 →J /ψp p ¯ Decays

Abstract

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