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

Authors :
Carver M
Celentano A
Hicks K
Marsicano L
Mathieu V
Pilloni A
Adhikari KP
Adhikari S
Amaryan MJ
Angelini G
Atac H
Baltzell NA
Barion L
Battaglieri M
Bedlinskiy I
Benmokhtar F
Bianconi A
Biselli AS
Bondi M
Bossù F
Boiarinov S
Briscoe WJ
Brooks WK
Bulumulla D
Burkert VD
Carman DS
Carvajal JC
Chatagnon P
Chetry T
Ciullo G
Clark L
Clary BA
Cole PL
Contalbrigo M
Crede V
D'Angelo A
Dashyan N
De Vita R
Defurne M
Deur A
Diehl S
Djalali C
Dugger M
Dupre R
Egiyan H
Ehrhart M
Alaoui AE
Fassi LE
Eugenio P
Fedotov G
Fegan S
Filippi A
Gavalian G
Gevorgyan N
Gilfoyle GP
Girod FX
Gothe RW
Griffioen KA
Hafidi K
Hakobyan H
Hattawy M
Hayward TB
Heddle D
Holtrop M
Huang Q
Hyde CE
Ilieva Y
Ireland DG
Isupov EL
Jenkins D
Jo HS
Joo K
Joosten S
Keller D
Khanal A
Khandaker M
Kim A
Kim CW
Klein FJ
Kripko A
Kubarovsky V
Lanza L
Leali M
Lenisa P
Livingston K
MacGregor IJD
Marchand D
Mascagna V
McCracken ME
McKinnon B
Meziani ZE
Mokeev V
Movsisyan A
Munevar E
Camacho CM
Nadel-Turonski P
Neupane K
Niccolai S
Niculescu G
Osipenko M
Ostrovidov AI
Paolone M
Pappalardo LL
Paremuzyan R
Pasyuk E
Phelps W
Pogorelko O
Prok Y
Protopopescu D
Ripani M
Ritchie BG
Ritman J
Rizzo A
Rosner G
Rowley J
Sabatié F
Salgado C
Schmidt A
Schumacher RA
Sharabian YG
Shrestha U
Sokhan D
Soto O
Sparveris N
Stepanyan S
Strakovsky II
Strauch S
Tyler N
Tyson R
Ungaro M
Venturelli L
Voskanyan H
Voutier E
Watts DP
Wei K
Wei X
Yale B
Zachariou N
Zhang J
Zhao ZW
Source :
Physical review letters [Phys Rev Lett] 2021 Feb 26; Vol. 126 (8), pp. 082002.
Publication Year :
2021

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.

Details

Language :
English
ISSN :
1079-7114
Volume :
126
Issue :
8
Database :
MEDLINE
Journal :
Physical review letters
Publication Type :
Academic Journal
Accession number :
33709753
Full Text :
https://doi.org/10.1103/PhysRevLett.126.082002