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Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab
/ Accardi, A. (Hampton U.) ; Achenbach, P. (Jefferson Lab) ; Adhikari, D. (Virginia Tech.) ; Afanasev, A. (George Washington U.) ; Akondi, C.S. (Florida State U.) ; Akopov, N. (Yerevan Phys. Inst.) ; Albaladejo, M. (Valencia U., IFIC) ; Albataineh, H. (Texas A-M ; HARC, Woodlands) ; Albrecht, M. (Jefferson Lab) ; Almeida-Zamora, B. (Sonora U.) et al.
This document presents the initial scientific case for upgrading the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab (JLab) to 22 GeV. It is the result of a community effort, incorporating insights from a series of workshops conducted between March 2022 and April 2023. [...]
arXiv:2306.09360; JLAB-PHY-23-3840; JLAB-THY-23-3848.-
2024-09-04 - 139 p.
- Published in : Eur. Phys. J. A 60 (2024) 173
Fulltext: PDF; External link: JLab Document Server
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Observation of sizeable $\omega$ contribution to $\chi_{c1}(3872) \to \pi^+\pi^- J/\psi$ decays
/ LHCb Collaboration
Resonant structures in the dipion mass spectrum from $\chi_{c1}(3872)\to\pi^+\pi^- J/\psi$ decays, produced via $B^+\to K^+\chi_{c1}(3872)$ decays, are analyzed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb$^{-1}$. A sizeable contribution from the isospin conserving $\chi_{c1}(3872)\to\omega J/\psi$ decay is established for the first time, $(21.4\pm2.3\pm2.0)\%$, with a significance of more than $7.1\sigma$. [...]
arXiv:2204.12597; LHCb-PAPER-2021-045; CERN-EP-2022-049.-
Geneva : CERN, 2023-07-01 - 12 p.
- Published in : Phys. Rev. D 108 (2023) L011103
Fulltext: 2204.12597 - PDF; Publication - PDF; LHCb-PAPER-2021-045 - PDF; Related data file(s): ZIP;
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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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$\omega \to 3\pi$ 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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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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Khuri-Treiman equations for $3\pi$ decays of particles with spin
/ Albaladejo, M. (Jefferson Lab) ; Winney, D. (Indiana U.) ; Danilkin, I.V. (Mainz U., Inst. Kernphys. ; U. Mainz, PRISMA) ; Fernández-Ramírez, C. (Mexico U., ICN) ; Mathieu, V. (Madrid U.) ; Mikhasenko, M. (CERN) ; Pilloni, A. (ECT, Trento ; INFN, Genoa) ; Silva-Castro, J.A. (Mexico U., ICN) ; Szczepaniak, A.P. (Jefferson Lab ; Indiana U.)
/JPAC Collaboration
Khuri-Treiman equations have proven to be a useful theoretical tool in the analysis of 3-body decays, specially into the $3\pi$ final state. In this work we present in full detail the necessary generalization of the formalism to study the decays of particles with arbitrary spin, parity, and charge conjugation. [...]
arXiv:1910.03107; JLAB-THY-19-3066.-
2020-03-13 - 23 p.
- Published in : Phys. Rev. D 101 (2020) 054018
Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from Publisher: PDF; Fulltext from publisher: PDF; External link: JLab Document Server
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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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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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