Search for exotic hadrons in $\eta^{(')} \pi$ at GlueX - INSPIRE

DataBETA

Search for exotic hadrons in $\eta^{(')} \pi$ at GlueX

GlueX

Collaboration

•

M. Albrecht
(
- Jefferson Lab
)

for the collaboration.

Jul, 2024

5 pages

Published in:

Nuovo Cim.C 47 (2024) 4, 181

Contribution to:

- HADRON2023

Published: Jul, 2024

DOI:

10.1393/ncc/i2024-24181-1

Experiments:

GlueX

reference search1 citation

Citations per year

Abstract:

The theoretical description of the strong interaction between quarks and gluons that form hadrons is provided by quantum chromodynamics. However, the impact of gluonic excitations on the characteristics of hadrons and their role in hadronic structure is yet to be determined. Recent discoveries of several possibly exotic hadrons highlight the significance of spectroscopic measurements in comprehending the nature of the strong interaction. These proceedings focus on the status of the hunt for exotic contributions in photoproduction data obtained with the GlueX experiment at Jefferson Lab in .( )p systems. Specifically, we discuss the investigation of the a2(1320) meson production in these key channels, which is an initial step towards identifying exotic quantum-number states, where gluonic excitations contribute to the external properties, called hybrid states. Furthermore, the discussion will cover the application of an amplitude analysis that exploits the polarization of the photon beam available to the GlueX experiment and its implications for identifying the lightest hybrid meson.

References(14)

Figures(0)

[1]

Toward the excited isoscalar meson spectrum from lattice QCD

Hadron Spectrum

Collaboration

•

Jozef J. Dudek
(
- Jefferson Lab and
- Old Dominion U.
)

et al.

- Phys.Rev.D 88 (2013) 9, 094505
•
e-Print:
- 1309.2608
•
DOI:
- 10.1103/PhysRevD.88.094505

[2]

The GLUEX beamline and detector

GlueX

Collaboration

•

S. Adhikari
(
- Old Dominion U. (main)
)

et al.

- Nucl.Instrum.Meth.A 987 (2021) 164807
•
e-Print:
- 2005.14272
•
DOI:
- 10.1016/j.nima.2020.164807

[3]

GlueX Collaboration

Austregesilo A.

[4]

Hybrid Mesons

C.A. Meyer
(
- Carnegie Mellon U.
)
,
E.S. Swanson
(
- Pittsburgh U.
)

- Prog.Part.Nucl.Phys. 82 (2015) 21-58
•
e-Print:
- 1502.07276
•
DOI:
- 10.1016/j.ppnp.2015.03.001

[5]

Determination of the pole position of the lightest hybrid meson candidate

JPAC

Collaboration

•

A. Rodas
(
- Madrid U.
)

et al.

- Phys.Rev.Lett. 122 (2019) 4, 042002
•
e-Print:
- 1810.04171
•
DOI:
- 10.1103/PhysRevLett.122.042002

[6]

Measurement of beam asymmetry for $\pi^-\Delta^{++}$ photoproduction on the proton at $E_\gamma$ =8.5 GeV

GlueX

Collaboration

•

S. Adhikari
(
- Wuhan U. and
- Old Dominion U.
)

et al.

- Phys.Rev.C 103 (2021) 2, L022201
•
e-Print:
- 2009.07326
•
DOI:
- 10.1103/PhysRevC.103.L022201

[7]

Measurement of the photon beam asymmetry in $\vec{\gamma} p\to K^+\Sigma^0$ at $E_{\gamma} = 8.5$ GeV

GlueX

Collaboration

•

S. Adhikari
(
- Old Dominion U.
)

et al.

- Phys.Rev.C 101 (2020) 6, 065206
•
e-Print:
- 2003.08038
•
DOI:
- 10.1103/PhysRevC.101.065206

[8]

Beam Asymmetry $\mathbf{\Sigma}$ for the Photoproduction of $\mathbf{\eta}$ and $\mathbf{\eta^{\prime}}$ Mesons at $\mathbf{E_{\gamma}=8.8}$ GeV

GlueX

Collaboration

•

S. Adhikari
(
- Old Dominion U.
)

et al.

- Phys.Rev.C 100 (2019) 5, 052201
•
e-Print:
- 1908.05563
•
DOI:
- 10.1103/PhysRevC.100.052201

[9]

Measurement of the beam asymmetry $\Sigma$ for $\pi^0$ and $\eta$ photoproduction on the proton at $E_\gamma = 9$ GeV

GlueX

Collaboration

•

H. Al Ghoul
(
- Florida State U.
)

et al.

- Phys.Rev.C 95 (2017) 4, 042201
•
e-Print:
- 1701.08123
•
DOI:
- 10.1103/PhysRevC.95.042201

[10]

Measurement of spin-density matrix elements in $ρ (770)$ production with a linearly polarized photon beam at $E_{γ} = 8.2 - 8.8 GeV$

GlueX

Collaboration

•

S. Adhikari
(
- Yerevan Phys. Inst. and
- Old Dominion U.
)

et al.

- Phys.Rev.C 108 (2023) 5, 055204
•
e-Print:
- 2305.09047
•
DOI:
- 10.1103/PhysRevC.108.055204

[11]

Moments of angular distribution and beam asymmetries in $\eta\pi^0$ photoproduction at GlueX

JPAC

Collaboration

•

V. Mathieu
(
- Jefferson Lab and
- Madrid U.
)

et al.

- Phys.Rev.D 100 (2019) 5, 054017
•
e-Print:
- 1906.04841
•
DOI:
- 10.1103/PhysRevD.100.054017

[12]

Exclusive tensor meson photoproduction

JPAC

Collaboration

•

V. Mathieu
(
- Madrid U.
)

et al.

- Phys.Rev.D 102 (2020) 1, 014003
•
e-Print:
- 2005.01617
•
DOI:
- 10.1103/PhysRevD.102.014003

[13]

High-statistics study of eta pi0 production in two-photon collisions

Belle

Collaboration

•

S. Uehara
(
- KEK, Tsukuba
)

et al.

- Phys.Rev.D 80 (2009) 032001
•
e-Print:
- 0906.1464
•
DOI:
- 10.1103/PhysRevD.80.032001

[14]

Decays of an exotic $1{-+}$ hybrid meson resonance in QCD

Hadron Spectrum

Collaboration

•

Antoni J. Woss
(
- Cambridge U., DAMTP
)

et al.

- Phys.Rev.D 103 (2021) 5, 054502
•
e-Print:
- 2009.10034
•
DOI:
- 10.1103/PhysRevD.103.054502