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On the Equivalence of Three-Particle Scattering Formalisms
/ Jackura, A.W. (Indiana U. ; Indiana U., CEEM) ; Dawid, S.M. (Indiana U. ; Indiana U., CEEM) ; Fernández-Ramírez, C. (Mexico U., ICN) ; Mathieu, V. (Madrid U.) ; Mikhasenko, M. (CERN) ; Pilloni, A. (INFN, Genoa ; ECT, Trento) ; Sharpe, S.R. (Washington U., Seattle) ; Szczepaniak, A.P. (Indiana U. ; Indiana U., CEEM ; Jefferson Lab)
In recent years, different on-shell $\mathbf{3}\to\mathbf{3}$ scattering formalisms have been proposed to be applied to both lattice QCD and infinite volume scattering processes. We prove that the formulation in the infinite volume presented by Hansen and Sharpe in Phys.~Rev.~D92, 114509 (2015) and subsequently Brice\~no, Hansen, and Sharpe in Phys.~Rev.~D95, 074510 (2017) can be recovered from the $B$-matrix representation, derived on the basis of $S$-matrix unitarity, presented by Mai {\em et al.} in Eur.~Phys.~J.~A53, 177 (2017) and Jackura {\em et al.} in Eur.~Phys.~J.~C79, 56 (2019). [...]
arXiv:1905.12007; JLAB-THY-19-2947.-
2019-08-14 - 14 p.
- Published in : Phys. Rev. D 100 (2019) 034508
Article from SCOAP3: PDF; Fulltext: PDF; External link: JLab Document Server
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2.
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Three-body scattering: Ladders and Resonances
/ Mikhasenko, M. (Bonn U., HISKP ; CERN) ; Wunderlich, Y. (Bonn U., HISKP) ; Jackura, A. (Indiana U., CEEM ; Indiana U.) ; Mathieu, V. (Jefferson Lab ; Madrid U.) ; Pilloni, A. (ECT, Trento ; INFN, Genoa ; Fond. Bruno Kessler, Trento) ; Ketzer, B. (Bonn U., HISKP) ; Szczepaniak, A.P. (Indiana U., CEEM ; Indiana U. ; Jefferson Lab)
We discuss unitarity constraints on the dynamics of a system of three interacting particles. We show how the short-range interaction that describes three-body resonances can be separated from the long-range exchange processes, in particular the one-pion-exchange process. [...]
arXiv:1904.11894; JLAB-THY-19-2924.-
2019-08-14 - 15 p.
- Published in : JHEP 1908 (2019) 080
Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; External link: JLab Document Server
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3.
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Unitarity of the infinite-volume three-particle scattering amplitude arising from a finite-volume formalism
/ Briceño, Raúl A. (Jefferson Lab ; Old Dominion U.) ; Hansen, Maxwell T. (CERN) ; Sharpe, Stephen R. (Washington U., Seattle) ; Szczepaniak, Adam P. (Indiana U., Bloomington (main) ; Indiana U., CEEM ; Jefferson Lab)
In a previous publication, two of us derived a relation between the scattering amplitude of three identical bosons, $\mathcal M_3$, and a real function referred to as the {divergence-free} K matrix and denoted $\mathcal K_{\text{df},3}$. The result arose in the context of a relation between finite-volume energies and $\mathcal K_{\text{df},3}$, derived to all orders in the perturbative expansion of a generic low-energy effective field theory. [...]
arXiv:1905.11188; JLAB-THY-19-2945; CERN-TH-2019-078.-
2019-09-19 - 19 p.
- Published in : Phys. Rev. D 100 (2019) 054508
Article from SCOAP3: PDF; Fulltext: PDF; External link: JLab Document Server
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4.
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Interpretation of the LHCb $P_c$(4312)$^+$ Signal
/ Fernández-Ramírez, C. (Mexico U., ICN) ; Pilloni, A. (ECT, Trento ; Fond. Bruno Kessler, Trento ; INFN, Genoa) ; Albaladejo, M. (Jefferson Lab) ; Jackura, A. (Indiana U., CEEM ; Indiana U.) ; Mathieu, V. (Jefferson Lab) ; Mikhasenko, M. (CERN) ; Silva-Castro, J.A. (Mexico U., ICN) ; Szczepaniak, A.P. (Jefferson Lab ; Indiana U., CEEM ; Indiana U.)
/JPAC Collaboration
We study the nature of the new signal reported by LHCb in the J/psi p spectrum. Based on the S-matrix principles, we perform a minimum-bias analysis of the underlying reaction amplitude, focusing on the analytic properties that can be related to the microscopic origin of the Pc(4312) peak. [...]
arXiv:1904.10021; JLAB-THY-19-2921.-
2019-08-30 - 6 p.
- Published in : Phys. Rev. Lett. 123 (2019) 092001
Article from SCOAP3: PDF; Fulltext: PDF; External link: JLab Document Server
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5.
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Moments of angular distribution and beam asymmetries in $\eta\pi^0$ photoproduction at GlueX
/ Mathieu, V. (Jefferson Lab ; Madrid U.) ; Albaladejo, M. (Jefferson Lab) ; Fernández-Ramírez, C. (Mexico U., ICN) ; Jackura, A.W. (Indiana U., CEEM ; Indiana U.) ; Mikhasenko, M. (CERN) ; Pilloni, A. (ECT, Trento ; Fond. Bruno Kessler, Trento ; INFN, Genoa) ; Szczepaniak, A.P. (Jefferson Lab ; Indiana U., CEEM ; Indiana U.)
/JPAC Collaboration
In the search for exotic mesons, the GlueX collaboration will soon extract moments of the $\eta\pi^0$ angular distribution. In the perspective of these results, we generalize the formalism of moment extraction to the case in which the two mesons are produced with a linearly polarized beam, and build a model for the reaction $\vec \gamma p \to \eta \pi^0 p$. [...]
arXiv:1906.04841; JLAB-THY-19-2958.-
2019-09-18 - 16 p.
- Published in : Phys. Rev. D 100 (2019) 054017
Article from SCOAP3: PDF; Fulltext: PDF; External link: JLab Document Server
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6.
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$\omega \to 3\pi$ and $\omega\pi^{0}$ transition form factor revisited
/ Albaladejo, M. (Jefferson Lab) ; Danilkin, I. (Mainz U., Inst. Kernphys. ; U. Mainz, PRISMA) ; Gonzalez-Solis, S. (Indiana U. ; Indiana U., CEEM) ; Winney, D. (Indiana U. ; Indiana U., CEEM) ; Fernandez-Ramirez, C. (Mexico U., CEN) ; Blin, A.N. Hiller (Jefferson Lab) ; Mathieu, V. (Madrid, IFT) ; Mikhasenko, M. (CERN) ; Pilloni, A. (ECT, Trento ; INFN, Genoa) ; Szczepaniak, A. (Jefferson Lab ; Indiana U. ; Indiana U., CEEM)
/JPAC Collaboration
In light of recent experimental results, we revisit the dispersive analysis of the $\omega \to 3\pi$ decay amplitude and of the $\omega\pi^0$ transition form factor. Within the framework of the Khuri-Treiman equations, we show that the $\omega \to 3\pi$ Dalitz-plot parameters obtained with a once-subtracted amplitude are in agreement with the latest experimental determination by BESIII. [...]
arXiv:2006.01058; JLAB-THY-20-3200.-
2020-06-02 - 18 p.
- Published in : Eur. Phys. J. C 80 (2020) 1107
Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;
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7.
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8.
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Dalitz-plot decomposition for three-body decays
/ JPAC Collaboration
We present a general formalism to write the decay amplitude for multibody reactions with explicit separation of the rotational degrees of freedom, which are well controlled by the spin of the decay particle, and dynamic functions on the subchannel invariant masses, which require modeling. Using the three-particle kinematics we demonstrate the proposed factorization, named the Dalitz-plot decomposition. [...]
arXiv:1910.04566; JLAB-THY-19-3070.-
2020-02-28 - 15 p.
- Published in : Phys. Rev. D 101 (2020) 034033
Article from SCOAP3: PDF; Fulltext: PDF; External link: JLab Document Server
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9.
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Summary of Topical Group on Hadron Spectroscopy (RF07) Rare Processes and Precision Frontier of Snowmass 2021
/ Lebed, R.F. (ed.) (Arizona State U.) ; Skwarnicki, T. (ed.) (Syracuse U.) ; An, L. (CERN) ; Dobbs, S. (Florida State U.) ; Fulsom, B. (PNL, Richland) ; Guo, F.-K. (Nanjing U. ; Beijing, GUCAS) ; Karliner, M. (Tel Aviv U.) ; Mitchell, R.E. (Indiana U.) ; Pilloni, A. (INFN, Messina ; INFN, Catania) ; Pompili, A. (Bari U. ; INFN, Bari) et al.
Hadron spectroscopy, the driving force of high-energy physics in its early decades, has experienced a renaissance in interest over the past 20 years due to the discovery of scores of new, potentially "exotic states" (tetraquarks, pentaquarks, hybrid mesons, glueballs), as well as the observation of many new "conventional" hadrons. [...]
arXiv:2207.14594.
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Snowmass 2021 - eConf - Fulltext
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10.
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$\pi^-p\to\eta^{(\prime)}\, \pi^- p$ in the double-Regge region
/ Bibrzycki, L. (Pedagogical U., Cracow ; Indiana U. ; Jefferson Lab) ; Fernandez-Ramirez, C. (Mexico U., ICN) ; Mathieu, V. (ICC, Barcelona U. ; Madrid U.) ; Mikhasenko, M. (CERN) ; Albaladejo, M. (Jefferson Lab) ; Blin, A.N. Hiller (Jefferson Lab) ; Pilloni, A. (INFN, Rome) ; Szczepaniak, A.P. (Indiana U. ; Jefferson Lab ; Indiana U., CEEM)
/JPAC Collaboration
The production of $\eta^{(\prime)}\pi$ pairs constitutes one of the golden channels to search for hybrid exotics, with explicit gluonic degrees of freedom. Understanding the dynamics and backgrounds associated to $\eta^{(\prime)}\pi$ production above the resonance region is required to impose additional constraints to the resonance extraction. [...]
arXiv:2104.10646; JLAB-THY-21-3354.-
2021-07-23 - 25 p.
- Published in : Eur. Phys. J. C
- Published in : Eur. Phys. J. C
Erratum: Bibrzycki2021_Article_ErratumToPi-pRightarrowEtaPrim - PDF; Erratum - PDF; Fulltext: 2104.10646 - PDF; document - PDF; Publication: PDF; External link: JLab Document Server
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