Abstract
A study of B+ → J/ψηK+ decays, followed by J/ψ → μ+μ− and η → γγ, is performed using a dataset collected with the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to an integrated luminosity of 9 fb−1. The J/ψη mass spectrum is investigated for contributions from charmonia and charmonium-like states. Evidence is found for the B+ → (ψ2(3823) → J/ψη)K+ and B+ → (ψ(4040) → J/ψη)K+ decays with significance of 3.4 and 4.7 standard deviations, respectively. This constitutes the first evidence for the ψ2(3823) → J/ψη decay.
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References
Belle collaboration, Observation of a narrow charmonium-like state in exclusive B± → K±π+π−J/ψ decays, Phys. Rev. Lett. 91 (2003) 262001 [hep-ex/0309032] [INSPIRE].
CDF collaboration, Observation of the narrow state X(3872) → J/ψπ+π− in \( \overline{\mathrm{p}}\mathrm{p} \) collisions at \( \sqrt{s} \) = 1.96 TeV, Phys. Rev. Lett. 93 (2004) 072001 [hep-ex/0312021] [INSPIRE].
D0 collaboration, Observation and properties of the X(3872) decaying to J/ψπ+π− in \( \mathrm{p}\overline{\mathrm{p}} \) collisions at \( \sqrt{s} \) = 1.96 TeV, Phys. Rev. Lett. 93 (2004) 162002 [hep-ex/0405004] [INSPIRE].
BaBar collaboration, Study of the B− → J/ψK−π+π− decay and measurement of the B− → J/ψK−π+π− branching fraction, Phys. Rev. D 71 (2005) 071103 [hep-ex/0406022] [INSPIRE].
CDF collaboration, Measurement of the dipion mass spectrum in X(3872) → J/ψπ+π− decays, Phys. Rev. Lett. 96 (2006) 102002 [hep-ex/0512074] [INSPIRE].
BaBar collaboration, Study of the X(3872) and Y(4260) in B0 → J/ψπ+π−K0 and B− → J/ψπ+π−K− decays, Phys. Rev. D 73 (2006) 011101 [hep-ex/0507090] [INSPIRE].
BaBar collaboration, Search for B+ → X(3872)K+, X(3872) → J/ψγ, Phys. Rev. D 74 (2006) 071101 [hep-ex/0607050] [INSPIRE].
CDF collaboration, Analysis of the quantum numbers JPC of the X(3872) particle, Phys. Rev. Lett. 98 (2007) 132002 [hep-ex/0612053] [INSPIRE].
BaBar collaboration, Search for prompt production of χc and X(3872) in e+e− annihilations, Phys. Rev. D 76 (2007) 071102 [arXiv:0707.1633] [INSPIRE].
BaBar collaboration, Study of B → X(3872)K, with X(3872) → J/ψπ+π−, Phys. Rev. D 77 (2008) 111101 [arXiv:0803.2838] [INSPIRE].
CDF collaboration, Precision measurement of the X(3872) mass in J/ψπ+π− decays, Phys. Rev. Lett. 103 (2009) 152001 [arXiv:0906.5218] [INSPIRE].
BaBar collaboration, Evidence for X(3872) → ψ(2S)γ in B± → X(3872)K± decays, and a study of B → \( \mathrm{c}\overline{\mathrm{c}}\upgamma \mathrm{K} \), Phys. Rev. Lett. 102 (2009) 132001 [arXiv:0809.0042] [INSPIRE].
Belle collaboration, Study of the B → X(3872)(→ D*0\( \overline{\mathrm{D}} \)0)K decay, Phys. Rev. D 81 (2010) 031103 [arXiv:0810.0358] [INSPIRE].
BaBar collaboration, Evidence for the decay X(3872) → J/ψω, Phys. Rev. D 82 (2010) 011101 [arXiv:1005.5190] [INSPIRE].
Belle collaboration, Bounds on the width, mass difference and other properties of X(3872) → π+π−J/ψ decays, Phys. Rev. D 84 (2011) 052004 [arXiv:1107.0163] [INSPIRE].
Belle collaboration, Observation of X(3872) → J/ψγ and search for X(3872) → ψ′γ in B decays, Phys. Rev. Lett. 107 (2011) 091803 [arXiv:1105.0177] [INSPIRE].
LHCb collaboration, Observation of X(3872) production in pp collisions at \( \sqrt{s} \) = 7 TeV, Eur. Phys. J. C 72 (2012) 1972 [arXiv:1112.5310] [INSPIRE].
LHCb collaboration, Determination of the X(3872) meson quantum numbers, Phys. Rev. Lett. 110 (2013) 222001 [arXiv:1302.6269] [INSPIRE].
CMS collaboration, Measurement of the X(3872) production cross section via decays to J/ψπ+π− in pp collisions at \( \sqrt{s} \) = 7 TeV, JHEP 04 (2013) 154 [arXiv:1302.3968] [INSPIRE].
BESIII collaboration, Observation of e+e− → γX(3872) at BESIII, Phys. Rev. Lett. 112 (2014) 092001 [arXiv:1310.4101] [INSPIRE].
LHCb collaboration, Evidence for the decay X(3872) → ψ(2S)γ, Nucl. Phys. B 886 (2014) 665 [arXiv:1404.0275] [INSPIRE].
Belle collaboration, Observation of X(3872) in B → X(3872)Kπ decays, Phys. Rev. D 91 (2015) 051101 [arXiv:1501.06867] [INSPIRE].
LHCb collaboration, Quantum numbers of the X(3872) state and orbital angular momentum in its ρ0J/ψ decays, Phys. Rev. D 92 (2015) 011102 [arXiv:1504.06339] [INSPIRE].
ATLAS collaboration, Measurements of ψ(2S) and X(3872) → J/ψπ+π− production in pp collisions at \( \sqrt{s} \) = 8 TeV with the ATLAS detector, JHEP 01 (2017) 117 [arXiv:1610.09303] [INSPIRE].
LHCb collaboration, Observation of ηc(2S) → \( \mathrm{p}\overline{\mathrm{p}} \) and search for X(3872) → \( \mathrm{p}\overline{\mathrm{p}} \) decays, Phys. Lett. B 769 (2017) 305 [arXiv:1607.06446] [INSPIRE].
LHCb collaboration, Observation of the \( {\Lambda}_{\mathrm{b}}^0 \) → χc1(3872)pK− decay, JHEP 09 (2019) 028 [arXiv:1907.00954] [INSPIRE].
Belle collaboration, Search for B0 → X(3872)γ, Phys. Rev. D 100 (2019) 012002 [arXiv:1905.11718] [INSPIRE].
Belle collaboration, Search for X(3872) and X(3915) decay into χc1π0 in B decays at Belle, Phys. Rev. D 99 (2019) 111101 [arXiv:1904.07015] [INSPIRE].
LHCb collaboration, Study of the line shape of the χc1(3872) state, Phys. Rev. D 102 (2020) 092005 [arXiv:2005.13419] [INSPIRE].
LHCb collaboration, Study of the ψ2(3823) and χc1(3872) states in B+ → (J/ψπ+π−)K+ decays, JHEP 08 (2020) 123 [arXiv:2005.13422] [INSPIRE].
LHCb collaboration, Modification of χc1(3872) and ψ(2S) production in pp collisions at \( \sqrt{s} \) = 8 TeV, Phys. Rev. Lett. 126 (2021) 092001 [arXiv:2009.06619] [INSPIRE].
CMS collaboration, Observation of the \( {\mathrm{B}}_{\mathrm{s}}^0 \) → X(3872)ϕ decay, Phys. Rev. Lett. 125 (2020) 152001 [arXiv:2005.04764] [INSPIRE].
LHCb collaboration, Study of \( {\mathrm{B}}_{\mathrm{s}}^0 \) → J/ψπ+π−K+K− decays, JHEP 02 (2021) 024 [Erratum ibid. 04 (2021) 170] [arXiv:2011.01867] [INSPIRE].
Particle Data Group collaboration, Review of particle physics, PTEP 2020 (2020) 083C01 [INSPIRE] and 2021 update.
N. Brambilla et al., The XYZ states: experimental and theoretical status and perspectives, Phys. Rept. 873 (2020) 1 [arXiv:1907.07583] [INSPIRE].
E.S. Swanson, The new heavy mesons: A status report, Phys. Rept. 429 (2006) 243 [hep-ph/0601110] [INSPIRE].
H.-X. Chen, W. Chen, X. Liu and S.-L. Zhu, The hidden-charm pentaquark and tetraquark states, Phys. Rept. 639 (2016) 1 [arXiv:1601.02092] [INSPIRE].
A. Esposito, A. Pilloni and A.D. Polosa, Multiquark resonances, Phys. Rept. 668 (2017) 1 [arXiv:1611.07920] [INSPIRE].
A. Ali, J.S. Lange and S. Stone, Exotics: Heavy pentaquarks and tetraquarks, Prog. Part. Nucl. Phys. 97 (2017) 123 [arXiv:1706.00610] [INSPIRE].
A. Hosaka, T. Iijima, K. Miyabayashi, Y. Sakai and S. Yasui, Exotic hadrons with heavy flavors: X, Y, Z, and related states, PTEP 2016 (2016) 062C01 [arXiv:1603.09229] [INSPIRE].
R.F. Lebed, R.E. Mitchell and E.S. Swanson, Heavy-quark QCD exotica, Prog. Part. Nucl. Phys. 93 (2017) 143 [arXiv:1610.04528] [INSPIRE].
F.-K. Guo, C. Hanhart, U.-G. Meißner, Q. Wang, Q. Zhao and B.-S. Zou, Hadronic molecules, Rev. Mod. Phys. 90 (2018) 015004 [arXiv:1705.00141] [INSPIRE].
S.L. Olsen, T. Skwarnicki and D. Zieminska, Nonstandard heavy mesons and baryons: Experimental evidence, Rev. Mod. Phys. 90 (2018) 015003 [arXiv:1708.04012] [INSPIRE].
A. Ali, L. Maiani and A.D. Polosa, Multiquark hadrons, Cambridge University Press, Cambridge, U.K. (2019) [DOI] [INSPIRE].
E.S. Swanson, Molecular interpretation of the X(3872), in 32nd International Conference on High Energy Physics, pp. 1037–1039 (2004) [DOI] [hep-ph/0410284] [INSPIRE].
X. Liu, Z.-G. Luo, Y.-R. Liu and S.-L. Zhu, X(3872) and other possible heavy molecular states, Eur. Phys. J. C 61 (2009) 411 [arXiv:0808.0073] [INSPIRE].
I.W. Lee, A. Faessler, T. Gutsche and V.E. Lyubovitskij, X(3872) as a molecular \( \mathrm{D}\overline{\mathrm{D}} \)* state in a potential model, Phys. Rev. D 80 (2009) 094005 [arXiv:0910.1009] [INSPIRE].
P.G. Ortega, J. Segovia, D.R. Entem and F. Fernandez, The X(3872) an other possible XYZ molecular states, AIP Conf. Proc. 1257 (2010) 331 [arXiv:1001.3948] [INSPIRE].
M. Albaladejo et al., Note on X(3872) production at hadron colliders and its molecular structure, Chin. Phys. C 41 (2017) 121001 [arXiv:1709.09101] [INSPIRE].
Y.S. Kalashnikova and A.V. Nefediev, X(3872) in the molecular model, Phys. Usp. 62 (2019) 568 [arXiv:1811.01324] [INSPIRE].
F.-L. Wang, X.-D. Yang, R. Chen and X. Liu, Finding new evidence to identify charmoniumlike molecules, Phys. Rev. D 104 (2021) 094010 [arXiv:2103.04698] [INSPIRE].
L. Maiani, F. Piccinini, A.D. Polosa and V. Riquer, Diquark-antidiquarks with hidden or open charm and the nature of X(3872), Phys. Rev. D 71 (2005) 014028 [hep-ph/0412098] [INSPIRE].
L. Maiani, F. Piccinini, A.D. Polosa and V. Riquer, The Z(4430) and a new paradigm for spin interactions in tetraquarks, Phys. Rev. D 89 (2014) 114010 [arXiv:1405.1551] [INSPIRE].
L. Maiani, A.D. Polosa and V. Riquer, A theory of X and Z multiquark resonances, Phys. Lett. B 778 (2018) 247 [arXiv:1712.05296] [INSPIRE].
B.A. Li, Is X(3872) a possible candidate as a hybrid meson?, Phys. Lett. B 605 (2005) 306 [hep-ph/0410264] [INSPIRE].
M.T. AlFiky, Molecular description of X(3872) in effective field theory, J. Phys. Conf. Ser. 69 (2007) 012005 [INSPIRE].
S. Dubynskiy and M.B. Voloshin, Hadro-charmonium, Phys. Lett. B 666 (2008) 344 [arXiv:0803.2224] [INSPIRE].
N.N. Achasov and E.V. Rogozina, Towards the nature of X(3872) resonance, J. Univ. Sci. Tech. China 46 (2016) 574 [arXiv:1510.07251] [INSPIRE].
N.N. Achasov and E.V. Rogozina, X(3872), IG(JPC) = 0+ (1++), as the χc1(2P) charmonium, Mod. Phys. Lett. A 30 (2015) 1550181 [arXiv:1501.03583] [INSPIRE].
F.K. Guo, C. Hidalgo-Duque, J. Nieves and M.P. Valderrama, Heavy quark symmetries: Molecular partners of the X(3872) and Zb(10610)/\( {\mathrm{Z}}_{\mathrm{b}}^{\prime } \)(10650), Int. J. Mod. Phys. Conf. Ser. 26 (2014) 1460073 [arXiv:1309.3865] [INSPIRE].
V. Baru, E. Epelbaum, A.A. Filin, C. Hanhart and A.V. Nefediev, Heavy-quark spin symmetry partners of the X(3872) molecule, JPS Conf. Proc. 13 (2017) 020023 [INSPIRE].
V. Baru, E. Epelbaum, A.A. Filin, C. Hanhart and A.V. Nefediev, Molecular partners of the X(3872) from heavy-quark spin symmetry: A fresh look, EPJ Web Conf. 137 (2017) 06002 [INSPIRE].
H. Mutuk, Y. Saraç, H. Gümüs and A. Ozpineci, X(3872) and its heavy quark spin symmetry partners in QCD sum rules, Eur. Phys. J. C 78 (2018) 904 [arXiv:1807.04091] [INSPIRE].
M.-Z. Liu, T.-W. Wu, M. Pavon Valderrama, J.-J. Xie and L.-S. Geng, Heavy-quark spin and flavor symmetry partners of the X(3872) revisited: What can we learn from the one boson exchange model?, Phys. Rev. D 99 (2019) 094018 [arXiv:1902.03044] [INSPIRE].
BaBar collaboration, Observation of the decay B → J/ψηK and search for X(3872) → J/ψη, Phys. Rev. Lett. 93 (2004) 041801 [hep-ex/0402025] [INSPIRE].
Belle collaboration, Measurement of branching fractions for B → J/ψηK decays and search for a narrow resonance in the J/ψη final state, PTEP 2014 (2014) 043C01 [arXiv:1310.2704] [INSPIRE].
LHCb collaboration, Near-threshold \( \mathrm{D}\overline{\mathrm{D}} \) spectroscopy and observation of a new charmonium state, JHEP 07 (2019) 035 [arXiv:1903.12240] [INSPIRE].
BESIII collaboration, Observation of di-structures in e+e− → J/ψX at center-of-mass energies around 3.773 GeV, Phys. Rev. Lett. 127 (2021) 082002 [arXiv:2012.04186] [INSPIRE].
BESIII collaboration, Observation of Zc(3900) in e+e− → π0π0J/ψ, Phys. Rev. Lett. 115 (2015) 112003 [arXiv:1506.06018] [INSPIRE].
T. Xiao, S. Dobbs, A. Tomaradze and K.K. Seth, Observation of the charged hadron Zc(3900)± and evidence for the neutral Zc(3900)0 in e+e− → ππJ/ψ at \( \sqrt{s} \) = 4170 MeV, Phys. Lett. B 727 (2013) 366 [arXiv:1304.3036] [INSPIRE].
BESIII collaboration, Precise measurement of the e+e− → π+π−J/ψ cross section at center-of-mass energies from 3.77 to 4.60 GeV, Phys. Rev. Lett. 118 (2017) 092001 [arXiv:1611.01317] [INSPIRE].
BaBar collaboration, Evidence of a broad structure at an invariant mass of 4.32 GeV/c2 in the reaction e+e− → π+π−ψ(2S) measured at BaBar, Phys. Rev. Lett. 98 (2007) 212001 [hep-ex/0610057] [INSPIRE].
Belle collaboration, Observation of two resonant structures in e+e− → π+π−ψ(2S) via initial state radiation at Belle, Phys. Rev. Lett. 99 (2007) 142002 [arXiv:0707.3699] [INSPIRE].
BaBar collaboration, Study of the reaction e+e− → ψ(2S)π+π− via initial-state radiation at BaBar, Phys. Rev. D 89 (2014) 111103 [arXiv:1211.6271] [INSPIRE].
BESIII collaboration, Evidence of two resonant structures in e+e− → π+π−hc, Phys. Rev. Lett. 118 (2017) 092002 [arXiv:1610.07044] [INSPIRE].
BESIII collaboration, Observation of the Y(4220) and Y(4360) in the process e+e− → ηJ/ψ, Phys. Rev. D 102 (2020) 031101 [arXiv:2003.03705] [INSPIRE].
Belle collaboration, Observation of a resonance-like structure in the π±ψ′ mass distribution in exclusive B → Kπ±ψ′ decays, Phys. Rev. Lett. 100 (2008) 142001 [arXiv:0708.1790] [INSPIRE].
Belle collaboration, Experimental constraints on the spin and parity of the Z(4430)+, Phys. Rev. D 88 (2013) 074026 [arXiv:1306.4894] [INSPIRE].
LHCb collaboration, Observation of the resonant character of the Z(4430)− state, Phys. Rev. Lett. 112 (2014) 222002 [arXiv:1404.1903] [INSPIRE].
Belle collaboration, Observation of a new charged charmoniumlike state in \( \overline{\mathrm{B}} \)0 → J/ψK−π+ decays, Phys. Rev. D 90 (2014) 112009 [arXiv:1408.6457] [INSPIRE].
LHCb collaboration, Model-independent confirmation of the Z(4430)− state, Phys. Rev. D 92 (2015) 112009 [arXiv:1510.01951] [INSPIRE].
LHCb collaboration, The LHCb detector at the LHC, 2008 JINST 3 S08005 [INSPIRE].
LHCb collaboration, LHCb detector performance, Int. J. Mod. Phys. A 30 (2015) 1530022 [arXiv:1412.6352] [INSPIRE].
C. Abellán Beteta et al., Calibration and performance of the LHCb calorimeters in Run 1 and 2 at the LHC, arXiv:2008.11556 [INSPIRE].
T. Sjöstrand, S. Mrenna and P.Z. Skands, A brief introduction to Pythia 8.1, Comput. Phys. Commun. 178 (2008) 852 [arXiv:0710.3820] [INSPIRE].
I. Belyaev et al., Handling of the generation of primary events in Gauss, the LHCb simulation framework, J. Phys. Conf. Ser. 331 (2011) 032047 [INSPIRE].
D.J. Lange, The EvtGen particle decay simulation package, Nucl. Instrum. Meth. A 462 (2001) 152 [INSPIRE].
N. Davidson, T. Przedzinski and Z. Was, Photos interface in C++: Technical and physics documentation, Comput. Phys. Commun. 199 (2016) 86 [arXiv:1011.0937] [INSPIRE].
Geant4 collaboration, Geant4 developments and applications, IEEE Trans. Nucl. Sci. 53 (2006) 270 [INSPIRE].
Geant4 collaboration, Geant4: A simulation toolkit, Nucl. Instrum. Meth. A 506 (2003) 250 [INSPIRE].
M. Clemencic et al., The LHCb simulation application, Gauss: Design, evolution and experience, J. Phys. Conf. Ser. 331 (2011) 032023 [INSPIRE].
R. Aaij et al., Selection and processing of calibration samples to measure the particle identification performance of the LHCb experiment in Run 2, EPJ Tech. Instrum. 6 (2019) 1 [arXiv:1803.00824] [INSPIRE].
LHCb collaboration, Measurement of the track reconstruction efficiency at LHCb, 2015 JINST 10 P02007 [arXiv:1408.1251] [INSPIRE].
LHCb collaboration, Evidence for the decay B0 → J/ψω and measurement of the relative branching fractions of \( {\mathrm{B}}_{\mathrm{s}}^0 \) meson decays to J/ψη and J/ψη′, Nucl. Phys. B 867 (2013) 547 [arXiv:1210.2631] [INSPIRE].
LHCb collaboration, Observations of \( {\mathrm{B}}_{\mathrm{s}}^0 \) → ψ(2S)η and \( {\mathrm{B}}_{\left(\mathrm{s}\right)}^0 \) → ψ(2S)π+π− decays, Nucl. Phys. B 871 (2013) 403 [arXiv:1302.6354] [INSPIRE].
LHCb collaboration, Observation of \( {\mathrm{B}}_{\mathrm{s}}^0 \) → χc1ϕ decay and study of B0 → χc1,2K*0 decays, Nucl. Phys. B 874 (2013) 663 [arXiv:1305.6511] [INSPIRE].
LHCb collaboration, Study of η–η′ mixing from measurement of \( {\mathrm{B}}_{\left(\mathrm{s}\right)}^0 \) → J/ψη(′) decay rates, JHEP 01 (2015) 024 [arXiv:1411.0943] [INSPIRE].
LHCb collaboration, Observation of the decay \( {\Lambda}_{\mathrm{b}}^0 \) → χc1pπ−, JHEP 05 (2021) 095 [arXiv:2103.04949] [INSPIRE].
W.S. McCulloch and W. Pitts, A logical calculus of the ideas immanent in nervous activity, Bull. Math. Biophys. 5 (1943) 115.
F. Rosenblatt, The perceptron: A probabilistic model for information storage and organization in the brain, Psychol. Rev. 65 (1958) 386.
J.-H. Zhong, R.-S. Huang, S.-C. Lee, R.-S. Huang and S.-C. Lee, A program for the Bayesian neural network in the Root framework, Comput. Phys. Commun. 182 (2011) 2655 [arXiv:1103.2854] [INSPIRE].
A. Powell et al., Particle identification at LHCb, PoS ICHEP2010 (2010) 020 [INSPIRE].
H. Terrier and I. Belyaev, Particle identification with LHCb calorimeters, LHCb-2003-092, (2003).
W.D. Hulsbergen, Decay chain fitting with a Kalman filter, Nucl. Instrum. Meth. A 552 (2005) 566 [physics/0503191] [INSPIRE].
S. Geisser, Predictive inference: An introduction, Monographs on statistics and applied probability, Chapman & Hall, New York, U.S.A. (1993) [DOI].
T. Skwarnicki, A study of the radiative cascade transitions between the Υ′ and Υ resonances, Ph.D. Thesis, Institute of Nuclear Physics, Krakow (1986) [DESY-F31-86-02] [INSPIRE].
LHCb collaboration, Observation of J/ψ-pair production in pp collisions at \( \sqrt{s} \) = 7 TeV, Phys. Lett. B 707 (2012) 52 [arXiv:1109.0963] [INSPIRE].
M. Pivk and F.R. Le Diberder, sPlot: A statistical tool to unfold data distributions, Nucl. Instrum. Meth. A 555 (2005) 356 [physics/0402083] [INSPIRE].
E. Byckling and K. Kajantie, Particle kinematics, John Wiley & Sons Inc., New York, U.S.A. (1973).
E. Govorkova, Study of π0/γ efficiency using B meson decays in the LHCb experiment, Phys. Atom. Nucl. 79 (2016) 1474 [arXiv:1505.02960] [INSPIRE].
LHCb collaboration, Measurement of relative branching fractions of B decays to ψ(2S) and J/ψ mesons, Eur. Phys. J. C 72 (2012) 2118 [arXiv:1205.0918] [INSPIRE].
W.S. Gosset, The probable error of a mean, Biometrika 6 (1908) 1.
D. Martínez Santos and F. Dupertuis, Mass distributions marginalized over per-event errors, Nucl. Instrum. Meth. A 764 (2014) 150 [arXiv:1312.5000] [INSPIRE].
A.L. Read, Presentation of search results: The CLs technique, J. Phys. G 28 (2002) 2693 [INSPIRE].
G. Cowan, K. Cranmer, E. Gross and O. Vitells, Asymptotic formulae for likelihood-based tests of new physics, Eur. Phys. J. C 71 (2011) 1554 [Erratum ibid. 73 (2013) 2501] [arXiv:1007.1727] [INSPIRE].
S.S. Wilks, The Large-Sample Distribution of the Likelihood Ratio for Testing Composite Hypotheses, Annals Math. Statist. 9 (1938) 60 [INSPIRE].
H. Xu, X. Liu and T. Matsuki, Understanding B− → X(3823)K− via rescattering mechanism and predicting B− → ηc2(1D2)/ψ3(3D3)K−, Phys. Rev. D 94 (2016) 034005 [arXiv:1605.04776] [INSPIRE].
BESIII collaboration, Observation of e+ e− → ηJ/ψ at center-of-mass energy \( \sqrt{s} \) = 4.009 GeV, Phys. Rev. D 86 (2012) 071101 [arXiv:1208.1857] [INSPIRE].
LHCb collaboration, Observation of a resonance in B+ → K+μ+μ− decays at low recoil, Phys. Rev. Lett. 111 (2013) 112003 [arXiv:1307.7595] [INSPIRE].
BES collaboration, Determination of the ψ(3770), ψ(4040), ψ(4160) and ψ(4415) resonance parameters, eConf C 070805 (2007) 02 [arXiv:0705.4500] [INSPIRE].
LHCb collaboration, Amplitude analysis of the B+ → D+D−K+ decay, Phys. Rev. D 102 (2020) 112003 [arXiv:2009.00026] [INSPIRE].
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U. Egede, T. Hadavizadeh, R. D. L. Henderson, J. A. Ward are associated to Department of Physics, University of Warwick, Coventry, United Kingdom
C. Göbel is associated to Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
L. Dai, J. Yu and S. Zhang are associated to Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China
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The LHCb collaboration., Aaij, R., Abdelmotteleb, A.S.W. et al. Study of charmonium and charmonium-like contributions in B+ → J/ψηK+ decays. J. High Energ. Phys. 2022, 46 (2022). https://doi.org/10.1007/JHEP04(2022)046
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Accepted:
Published:
DOI: https://doi.org/10.1007/JHEP04(2022)046