Photoproduction of the $f_2(1270)$ meson using the CLAS detector

M. ~Carver; A. ~Celentano; K. ~Hicks; L. ~Marsicano; V. ~Mathieu; A. ~Pilloni; K. P. ~Adhikari; S. Adhikari; M. J. ~Amaryan; Giovanni Angelini; H. ~Atac; N. A. ~Baltzell; L. Barion; M. ~Battaglieri; I. ~Bedlinskiy; Fatiha Benmokhtar; A. ~Bianconi; A. S. ~Biselli; M. ~Bondi; F. ~Bossù; S. ~Boiarinov; W. J. ~Briscoe; W. K. ~Brooks; D. ~Bulumulla; V. D. ~Burkert; D. S. ~Carman; J. C. ~Carvajal; P. ~Chatagnon; T. ~Chetry; G. ~Ciullo; L. ~Clark; B. A. ~Clary; P. L. ~Cole; M. ~Contalbrigo; V. ~Crede; A. ~D'Angelo; N. ~Dashyan; R. ~De~Vita; M. Defurne; A. ~Deur; S. Diehl; C. ~Djalali; M. ~Dugger; R. ~Dupre; H. ~Egiyan; M. ~Ehrhart; A. ~El~Alaoui; L. ~El~Fassi; P. ~Eugenio; G. ~Fedotov

doi:10.1103/PhysRevLett.126.082002

Photoproduction of the $f_2(1270)$ meson using the CLAS detector

Nuclear Experiment 2021-03-03 v1 High Energy Physics - Experiment

Authors: M. ~Carver , A. ~Celentano , K. ~Hicks , L. ~Marsicano , V. ~Mathieu , A. ~Pilloni , K. P. ~Adhikari , S. Adhikari , M. J. ~Amaryan , Giovanni Angelini , H. ~Atac , N. A. ~Baltzell , L. Barion , M. ~Battaglieri , I. ~Bedlinskiy , Fatiha Benmokhtar , A. ~Bianconi , A. S. ~Biselli , M. ~Bondi , F. ~Bossù , S. ~Boiarinov , W. J. ~Briscoe , W. K. ~Brooks , D. ~Bulumulla , V. D. ~Burkert , D. S. ~Carman , J. C. ~Carvajal , P. ~Chatagnon , T. ~Chetry , G. ~Ciullo , L. ~Clark , B. A. ~Clary , P. L. ~Cole , M. ~Contalbrigo , V. ~Crede , A. ~D'Angelo , N. ~Dashyan , R. ~De~Vita , M. Defurne , A. ~Deur , S. Diehl , C. ~Djalali , M. ~Dugger , R. ~Dupre , H. ~Egiyan , M. ~Ehrhart , A. ~El~Alaoui , L. ~El~Fassi , P. ~Eugenio , G. ~Fedotov , S. ~Fegan , A. ~Filippi , G. ~Gavalian , N. ~Gevorgyan , G. P. ~Gilfoyle , F. X. ~Girod , R. W. ~Gothe , K. A. ~Griffioen , K. ~Hafidi , H. ~Hakobyan , M. ~Hattawy , T. B. ~Hayward , D. ~Heddle , M. ~Holtrop , Q. ~Huang , C. E. ~Hyde , Y. ~Ilieva , D. G. ~Ireland , E. L. ~Isupov , D. ~Jenkins , H. S. ~Jo , K. ~Joo , S. ~ Joosten , D. ~Keller , A. ~Khanal , M. ~Khandaker , A. ~Kim , C. W. ~Kim , F. J. ~Klein , A. ~Kripko , V. ~Kubarovsky , L. ~Lanza , M. ~Leali , P. ~Lenisa , K. ~Livingston , I. J. D. ~MacGregor , D. ~Marchand , V. ~Mascagna , M. E. ~McCracken , B. ~McKinnon , Z. E. ~Meziani , V. ~Mokeev , A~Movsisyan , E. ~Munevar , C. ~Munoz~Camacho , P. ~Nadel-Turonski , K. ~Neupane , S. ~Niccolai , G. ~Niculescu , M. ~Osipenko , A. I. ~Ostrovidov , M. ~Paolone , L. L. ~Pappalardo , R. ~Paremuzyan , E. ~Pasyuk , W. ~Phelps , O. ~Pogorelko , Y. ~Prok , D. ~Protopopescu , M. ~Ripani , B. G. ~Ritchie , J. ~Ritman , A. ~Rizzo , G. ~Rosner , J. ~Rowley , F. ~Sabatié , C. ~Salgado , A. ~Schmidt , R. A. ~Schumacher , Y. G. ~Sharabian , U. ~Shrestha , D. ~Sokhan , O. ~Soto , N. ~Sparveris , S. ~Stepanyan , I. I. ~Strakovsky , S. ~Strauch , N. ~Tyler , R. ~Tyson , M. ~Ungaro , L. ~Venturelli , H. ~Voskanyan , E. ~Voutier , D. P. ~Watts , K. ~Wei , X. ~Wei , B. ~Yale , N. ~Zachariou , J. ~Zhang , Z. W. ~Zhao

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Abstract

The quark structure of the $f_2(1270)$ meson has, for many years, been assumed to be a pure quark-antiquark ( $q\bar{q}$ ) 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 $\rho$ -mesons. Such a state would be expected to decay strongly to final states with charged pions, due to the dominant decay $\rho \to \pi^+ \pi^-$ , whereas decay to two neutral pions would likely be suppressed. Here, we measure for the first time the reaction $\gamma p \to \pi^0 \pi^0 p$ , using the CLAS detector at Jefferson Lab for incident beam energies between 3.6-5.4~GeV. Differential cross sections, $d\sigma / dt$ , for $f_2(1270)$ photoproduction are extracted with good precision, due to low backgrounds, and are compared with theoretical calculations.

Keywords

photoproduction f2(1270) meson clas detector differential cross section molecular state quark structure

Cite

@article{arxiv.2010.16006,
  title  = {Photoproduction of the $f_2(1270)$ meson using the CLAS detector},
  author = {M. ~Carver and A. ~Celentano and K. ~Hicks and L. ~Marsicano and V. ~Mathieu and A. ~Pilloni and K. P. ~Adhikari and S. Adhikari and M. J. ~Amaryan and Giovanni Angelini and H. ~Atac and N. A. ~Baltzell and L. Barion and M. ~Battaglieri and I. ~Bedlinskiy and Fatiha Benmokhtar and A. ~Bianconi and A. S. ~Biselli and M. ~Bondi and F. ~Bossù and S. ~Boiarinov and W. J. ~Briscoe and W. K. ~Brooks and D. ~Bulumulla and V. D. ~Burkert and D. S. ~Carman and J. C. ~Carvajal and P. ~Chatagnon and T. ~Chetry and G. ~Ciullo and L. ~Clark and B. A. ~Clary and P. L. ~Cole and M. ~Contalbrigo and V. ~Crede and A. ~D'Angelo and N. ~Dashyan and R. ~De~Vita and M. Defurne and A. ~Deur and S. Diehl and C. ~Djalali and M. ~Dugger and R. ~Dupre and H. ~Egiyan and M. ~Ehrhart and A. ~El~Alaoui and L. ~El~Fassi and P. ~Eugenio and G. ~Fedotov and S. ~Fegan and A. ~Filippi and G. ~Gavalian and N. ~Gevorgyan and G. P. ~Gilfoyle and F. X. ~Girod and R. W. ~Gothe and K. A. ~Griffioen and K. ~Hafidi and H. ~Hakobyan and M. ~Hattawy and T. B. ~Hayward and D. ~Heddle and M. ~Holtrop and Q. ~Huang and C. E. ~Hyde and Y. ~Ilieva and D. G. ~Ireland and E. L. ~Isupov and D. ~Jenkins and H. S. ~Jo and K. ~Joo and S. ~ Joosten and D. ~Keller and A. ~Khanal and M. ~Khandaker and A. ~Kim and C. W. ~Kim and F. J. ~Klein and A. ~Kripko and V. ~Kubarovsky and L. ~Lanza and M. ~Leali and P. ~Lenisa and K. ~Livingston and I. J. D. ~MacGregor and D. ~Marchand and V. ~Mascagna and M. E. ~McCracken and B. ~McKinnon and Z. E. ~Meziani and V. ~Mokeev and A~Movsisyan and E. ~Munevar and C. ~Munoz~Camacho and P. ~Nadel-Turonski and K. ~Neupane and S. ~Niccolai and G. ~Niculescu and M. ~Osipenko and A. I. ~Ostrovidov and M. ~Paolone and L. L. ~Pappalardo and R. ~Paremuzyan and E. ~Pasyuk and W. ~Phelps and O. ~Pogorelko and Y. ~Prok and D. ~Protopopescu and M. ~Ripani and B. G. ~Ritchie and J. ~Ritman and A. ~Rizzo and G. ~Rosner and J. ~Rowley and F. ~Sabatié and C. ~Salgado and A. ~Schmidt and R. A. ~Schumacher and Y. G. ~Sharabian and U. ~Shrestha and D. ~Sokhan and O. ~Soto and N. ~Sparveris and S. ~Stepanyan and I. I. ~Strakovsky and S. ~Strauch and N. ~Tyler and R. ~Tyson and M. ~Ungaro and L. ~Venturelli and H. ~Voskanyan and E. ~Voutier and D. P. ~Watts and K. ~Wei and X. ~Wei and B. ~Yale and N. ~Zachariou and J. ~Zhang and Z. W. ~Zhao},
  journal= {arXiv preprint arXiv:2010.16006},
  year   = {2021}
}

Comments

5 pages, 4 figures

Photoproduction of the $f_2(1270)$ meson using the CLAS detector

Abstract

Keywords

Cite

Comments

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