Photoproduction of the f_{2}(1270) Meson Using the CLAS Detector

DOI

10.1103/PhysRevLett.126.082002

M Carver, Ohio University, Athens, Ohio 45701, USA.
A Celentano, INFN, Sezione di Genova, 16146 Genova, Italy.
K Hicks, Ohio University, Athens, Ohio 45701, USA.
L Marsicano, INFN, Sezione di Genova, 16146 Genova, Italy.
V Mathieu, Departamento de Fsica Terica and IPARCOS, Universidad Complutense de Madrid, 28040 Madrid, Spain.
A Pilloni, INFN, Sezione di Genova, 16146 Genova, Italy.
K P. Adhikari, Old Dominion University, Norfolk, Virginia 23529, USA.
S Adhikari, Florida International University, Miami, Florida 33199, USA.
M J. Amaryan, Old Dominion University, Norfolk, Virginia 23529, USA.
G Angelini, The George Washington University, Washington, D.C. 20052, USA.
H Atac, Temple University, Philadelphia, Pennsylvania 19122, USA.
N A. Baltzell, Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.
L Barion, INFN, Sezione di Ferrara, 44100 Ferrara, Italy.
M Battaglieri, INFN, Sezione di Genova, 16146 Genova, Italy.
I Bedlinskiy, National Research Centre Kurchatov Institute-ITEP, Moscow, 117259, Russia.
F Benmokhtar, Duquesne University, 600 Forbes Avenue, Pittsburgh, Pennsylvania 15282, USA.
A Bianconi, Università degli Studi di Brescia, 25123 Brescia, Italy.
A S. Biselli, Fairfield University, Fairfield, Connecticut 06824, USA.
M Bondi, INFN, Sezione di Genova, 16146 Genova, Italy.
F Bossù, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France.
S Boiarinov, Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.
W J. Briscoe, The George Washington University, Washington, D.C. 20052, USA.
W K. Brooks, Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile.
D Bulumulla, Old Dominion University, Norfolk, Virginia 23529, USA.
V D. Burkert, Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.
D S. Carman, Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.
J C. Carvajal, Florida International University, Miami, Florida 33199, USA.
P Chatagnon, Universit'e Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France.
T Chetry, Mississippi State University, Mississippi State, Mississippi 39762-5167, USA.
G Ciullo, INFN, Sezione di Ferrara, 44100 Ferrara, Italy.
L Clark, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
B A. Clary, University of Connecticut, Storrs, Connecticut 06269, USA.

Document Type

Journal Article

Publication Date

2-26-2021

Publication Title

Physical review letters

Volume

126

Issue

8

First Page

82002

Abstract

The quark structure of the f_{2}(1270) meson has, for many years, been assumed to be a pure quark-antiquark (qq[over ¯]) resonance with quantum numbers J^{PC}=2^{++}. Recently, it was proposed that the f_{2}(1270) is a molecular state made from the attractive interaction of two ρ mesons. Such a state would be expected to decay strongly to final states with charged pions due to the dominant decay ρ→π^{+}π^{-}, whereas decay to two neutral pions would likely be suppressed. Here, we measure for the first time the reaction γp→π^{0}π^{0}p, using the CEBAF Large Acceptance Spectrometer detector at Jefferson Lab for incident beam energies between 3.6 and 5.4 GeV. Differential cross sections, dσ/dt, for f_{2}(1270) photoproduction are extracted with good precision due to low backgrounds and are compared to theoretical calculations.

Open Access

OA

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