Global analysis of charge exchange meson production at high energies

Nys, Jannes; Blin, A. N. Hiller; Mathieu, V.; Fernández-Ramírez, C.; Jackura, A.; Pilloni, A.; Ryckebusch, Jan; Szczepaniak, Adam P.; Fox, Geoffrey

doi:10.1103/physrevd.98.034020

Cited by 17 publications

(13 citation statements)

References 107 publications

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“…contribution from leading and daughter Regge poles or Regge cuts. The validity of this Regge factorization hypothesis was recently assessed by a global fit to charge and strange exchange quasi-two body reactions in [464]. In particular kinematic domains where Regge pole models faithfully reproduce observation are identified for reactions dominated by different exchanges (see Fig.…”

Section: B Extension Of Amplitude Analyses Development Of Reaction Models For the Extraction Of Hadron Parameters From Datamentioning

confidence: 99%

Strong QCD from Hadron Structure Experiments

Brodsky

Burkert

Carman

et al. 2020

Int. J. Mod. Phys. E

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The topical workshop Strong QCD from Hadron Structure Experiments took place at Jefferson Lab from November 6–9, 2019. Impressive progress in relating hadron structure observables to the strong QCD mechanisms has been achieved from the ab initio QCD description of hadron structure in a diverse array of methods in order to expose emergent phenomena via quasi-particle formation. The wealth of experimental data and the advances in hadron structure theory make it possible to gain insight into strong interaction dynamics in the regime of large quark–gluon coupling (the strong QCD regime), which will address the most challenging problems of the Standard Model on the nature of the dominant part of hadron mass, quark–gluon confinement, and the emergence of the ground and excited state hadrons, as well as atomic nuclei, from QCD. This workshop aimed to develop plans and to facilitate the future synergistic efforts between experimentalists, phenomenologists, and theorists working on studies of hadron spectroscopy and structure with the goal to connect the properties of hadrons and atomic nuclei available from data to the strong QCD dynamics underlying their emergence from QCD. These results pave the way for a future breakthrough extension in the studies of QCD with an Electron–Ion Collider in the U.S.

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Section: B Extension Of Amplitude Analyses Development Of Reaction Models For the Extraction Of Hadron Parameters From Datamentioning

confidence: 99%

Strong QCD from Hadron Structure Experiments

Brodsky

Burkert

Carman

et al. 2020

Int. J. Mod. Phys. E

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“…( 6) is a product of two particle-Reggeon-particle couplings (top and bottom vertices) and one Reggeon-particle-Reggeon coupling (middle vertex). The particle-Reggeonparticle couplings could be extracted from quasi-two-body reactions [41,42], but the Reggeon-particle-Reggeon couplings are largely unknown. In principle, all couplings have residual dependence on t's that cannot be disentangled.…”

Section: Double-regge Modelmentioning

confidence: 99%

$$\pi ^-p\rightarrow \eta ^{(\prime )}\, \pi ^- p$$ in the double-Regge region

et al. 2021

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The production of $$\eta ^{(\prime )}\pi $$ η ( ′ ) π 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 $$\eta ^{(\prime )}\pi $$ η ( ′ ) π production above the resonance region is required to impose additional constraints to the resonance extraction. We consider the reaction $$\pi ^-p\rightarrow \eta ^{(\prime )} \pi ^- \,p$$ π - p → η ( ′ ) π - p measured by COMPASS. We show that the data in $$2.4< m_{\eta ^{(\prime )}\pi } < 3.0{\mathrm {\,GeV}} $$ 2.4 < m η ( ′ ) π < 3.0 GeV can be described by amplitudes based on double-Regge exchanges. The angular distribution of the meson pairs, in particular in the $$\eta ' \pi $$ η ′ π channel, can be attributed to flavor singlet exchanges, suggesting the presence of a large gluon content that couples strongly to the produced mesons.

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“…The φ coupling is then estimated with the help of SU (3) considerations as done in [19]. These values are compatible with the ones used in Regge fits [12,22]. The J/ψ coupling is obtained from the J/ψ → pp decay width using:…”

Section: X(3872) and χ C1 (1p )mentioning

confidence: 99%

“…, p(t) and q(t) the incoming and outgoing 3-momenta in the t-channel frame, M = max{|µ|, |µ |}, N = min{|µ|, |µ |}, and τ = (−) j the signature factor [11,12]. The hadronic scale s 0 is set to 1 GeV 2 .…”

Section: Formalismmentioning

confidence: 99%

XYZ spectroscopy at electron-hadron facilities: Exclusive processes

Albaladejo,

Blin,

Pilloni

et al. 2020

Preprint

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The next generation of electron-hadron facilities has the potential for significantly improving our understanding of exotic hadrons. The XYZ states have not been seen in photon-induced reactions so far. Their observation in such processes would provide an independent confirmation of their existence and offer new insights into their internal structure. Based on the known experimental data and the well-established quarkonium and Regge phenomenology, we give estimates for the exclusive cross sections of several XYZ states. For energies near threshold we expect cross sections of few nanobarns for the Zc(3900) + and upwards of tens of nanobarn for the X(3872), which are well within reach of new facilities.

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Global analysis of charge exchange meson production at high energies

Cited by 17 publications

References 107 publications

Strong QCD from Hadron Structure Experiments

Strong QCD from Hadron Structure Experiments

$$\pi ^-p\rightarrow \eta ^{(\prime )}\, \pi ^- p$$ in the double-Regge region

XYZ spectroscopy at electron-hadron facilities: Exclusive processes

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