Amplitude analysis of B+ ? ?(2S)K+ p+ p- decays

LHCb collaboration

doi:10.1007/JHEP01(2025)054

Amplitude analysis of B+ ? ?(2S)K+ p+ p- decays

LHCb collaboration

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

Abstract

The first full amplitude analysis of B+ -> psi(2S)K+pi(+)pi(-) decays is performed using proton-proton collision data corresponding to an integrated luminosity of 9 fb(-1) recorded with the LHCb detector. The rich K+pi(+)pi(-) spectrum is studied and the branching fractions of the resonant substructure associated with the prominent K-1(1270)(+) contribution are measured. The data cannot be described by conventional strange and charmonium resonances only. An amplitude model with 53 components is developed comprising 11 hidden-charm exotic hadrons. New production mechanisms for charged charmonium-like states are observed. Significant resonant activity with spin-parity J(P) = 1(+) in the psi(2S)pi(+) system is confirmed and a multi-pole structure is demonstrated. The spectral decomposition of the psi(2S)pi(+)pi(-) invariant-mass structure, dominated by X-0 -> psi(2S)rho(770)(0) decays, broadly resembles the J/psi phi spectrum observed in B+ -> J/psi phi K+ decays. Exotic psi(2S)K+pi(-) resonances are observed for the first time.

Original language	English
Article number	054
Number of pages	69
Journal	Journal of High Energy Physics
Issue number	1
DOIs	https://doi.org/10.1007/JHEP01(2025)054
Publication status	Published - 8 Jan 2025

Keywords

B Physics
Exotics
Hadron-Hadron Scattering
Spectroscopy
ISOBAR MODEL

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10.1007/JHEP01(2025)054Licence: CC BY

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@article{5af25c9585cf433dafc2c93a9154da29,

title = "Amplitude analysis of B+ ? ?(2S)K+ p+ p- decays",

abstract = "The first full amplitude analysis of B+ -> psi(2S)K+pi(+)pi(-) decays is performed using proton-proton collision data corresponding to an integrated luminosity of 9 fb(-1) recorded with the LHCb detector. The rich K+pi(+)pi(-) spectrum is studied and the branching fractions of the resonant substructure associated with the prominent K-1(1270)(+) contribution are measured. The data cannot be described by conventional strange and charmonium resonances only. An amplitude model with 53 components is developed comprising 11 hidden-charm exotic hadrons. New production mechanisms for charged charmonium-like states are observed. Significant resonant activity with spin-parity J(P) = 1(+) in the psi(2S)pi(+) system is confirmed and a multi-pole structure is demonstrated. The spectral decomposition of the psi(2S)pi(+)pi(-) invariant-mass structure, dominated by X-0 -> psi(2S)rho(770)(0) decays, broadly resembles the J/psi phi spectrum observed in B+ -> J/psi phi K+ decays. Exotic psi(2S)K+pi(-) resonances are observed for the first time.",

keywords = "B Physics, Exotics, Hadron-Hadron Scattering, Spectroscopy, ISOBAR MODEL",

author = "R. Aaij and Abdelmotteleb, {A. S. W.} and Beteta, {C. Abellan} and F. Abudinen and T. Ackernley and Adefisoye, {A. A.} and B. Adeva and M. Adinolfi and P. Adlarson and C. Agapopoulou and Aidala, {C. A.} and Z. Ajaltouni and S. Akar and K. Akiba and P. Albicocco and J. Albrecht and F. Alessio and M. Alexander and Z. Aliouche and Cartelle, {P. Alvarez} and R. Amalric and S. Amato and Amey, {J. L.} and Y. Amhis and L. An and L. Anderlini and M. Andersson and A. Andreianov and P. Andreola and M. Andreotti and D. Andreou and A. Anelli and D. Ao and F. Archilli and M. Argenton and {Arguedas Cuendis}, S. and A. Artamonov and {LHCb collaboration} and Bolognani, {C. S.} and E. Chatzianagnostou and X. Chiotopoulos and {de Boer}, J. and {de Vries}, {J. A.} and Geertsema, {R. E.} and Greeven, {L. M.} and E. Jans and M. Merk and D. Nicotra and Onderwater, {C. J. G.} and Pawley, {C. J.} and K. Vos and {C{\'a}mpora P{\'e}rez}, {Daniel Hugo} and {Lucio Martinez}, Miriam",

year = "2025",

month = jan,

day = "8",

doi = "10.1007/JHEP01(2025)054",

language = "English",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer Verlag",

number = "1",

}

TY - JOUR

T1 - Amplitude analysis of B+ ? ?(2S)K+ p+ p- decays

AU - Aaij, R.

AU - Abdelmotteleb, A. S. W.

AU - Beteta, C. Abellan

AU - Abudinen, F.

AU - Ackernley, T.

AU - Adefisoye, A. A.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Adlarson, P.

AU - Agapopoulou, C.

AU - Aidala, C. A.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Akiba, K.

AU - Albicocco, P.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Aliouche, Z.

AU - Cartelle, P. Alvarez

AU - Amalric, R.

AU - Amato, S.

AU - Amey, J. L.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andersson, M.

AU - Andreianov, A.

AU - Andreola, P.

AU - Andreotti, M.

AU - Andreou, D.

AU - Anelli, A.

AU - Ao, D.

AU - Archilli, F.

AU - Argenton, M.

AU - Arguedas Cuendis, S.

AU - Artamonov, A.

AU - LHCb collaboration

AU - Bolognani, C. S.

AU - Chatzianagnostou, E.

AU - Chiotopoulos, X.

AU - de Boer, J.

AU - de Vries, J. A.

AU - Geertsema, R. E.

AU - Greeven, L. M.

AU - Jans, E.

AU - Merk, M.

AU - Nicotra, D.

AU - Onderwater, C. J. G.

AU - Pawley, C. J.

AU - Vos, K.

AU - Cámpora Pérez, Daniel Hugo

AU - Lucio Martinez, Miriam

PY - 2025/1/8

Y1 - 2025/1/8

N2 - The first full amplitude analysis of B+ -> psi(2S)K+pi(+)pi(-) decays is performed using proton-proton collision data corresponding to an integrated luminosity of 9 fb(-1) recorded with the LHCb detector. The rich K+pi(+)pi(-) spectrum is studied and the branching fractions of the resonant substructure associated with the prominent K-1(1270)(+) contribution are measured. The data cannot be described by conventional strange and charmonium resonances only. An amplitude model with 53 components is developed comprising 11 hidden-charm exotic hadrons. New production mechanisms for charged charmonium-like states are observed. Significant resonant activity with spin-parity J(P) = 1(+) in the psi(2S)pi(+) system is confirmed and a multi-pole structure is demonstrated. The spectral decomposition of the psi(2S)pi(+)pi(-) invariant-mass structure, dominated by X-0 -> psi(2S)rho(770)(0) decays, broadly resembles the J/psi phi spectrum observed in B+ -> J/psi phi K+ decays. Exotic psi(2S)K+pi(-) resonances are observed for the first time.

AB - The first full amplitude analysis of B+ -> psi(2S)K+pi(+)pi(-) decays is performed using proton-proton collision data corresponding to an integrated luminosity of 9 fb(-1) recorded with the LHCb detector. The rich K+pi(+)pi(-) spectrum is studied and the branching fractions of the resonant substructure associated with the prominent K-1(1270)(+) contribution are measured. The data cannot be described by conventional strange and charmonium resonances only. An amplitude model with 53 components is developed comprising 11 hidden-charm exotic hadrons. New production mechanisms for charged charmonium-like states are observed. Significant resonant activity with spin-parity J(P) = 1(+) in the psi(2S)pi(+) system is confirmed and a multi-pole structure is demonstrated. The spectral decomposition of the psi(2S)pi(+)pi(-) invariant-mass structure, dominated by X-0 -> psi(2S)rho(770)(0) decays, broadly resembles the J/psi phi spectrum observed in B+ -> J/psi phi K+ decays. Exotic psi(2S)K+pi(-) resonances are observed for the first time.

KW - B Physics

KW - Exotics

KW - Hadron-Hadron Scattering

KW - Spectroscopy

KW - ISOBAR MODEL

U2 - 10.1007/JHEP01(2025)054

DO - 10.1007/JHEP01(2025)054

M3 - Article

SN - 1029-8479

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 1

M1 - 054

ER -

Amplitude analysis of <i>B</i><SUP>+</SUP> ? ?(2<i>S</i>)<i>K</i><SUP>+</SUP> p<SUP>+</SUP> p<SUP>-</SUP> decays

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Keywords

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