Application of the Veneziano model to the analysis of three pion charmonium decays

Autor: Adam P. Szczepaniak, M.R. Pennington

Publikováno v: Physics Letters B, Vol 737, Iss C, Pp 283-288 (2014)

We adapt the Veneziano model to the analysis of vector charmonium decays. Starting from a set of covariant Veneziano terms we show how to construct partial waves amplitudes that receive contributions from selected Regge trajectories. The amplitudes,

Externí odkaz: https://doaj.org/article/b5acb25d17174f8385306be94c84b39c

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

Autor: Alessandro Pilloni, Miguel Albaladejo, A. N. Hiller Blin, Mikhail Mikhasenko, Adam P. Szczepaniak, V. Mathieu, César Fernández-Ramírez, Łukasz Bibrzycki

Publikováno v: The European Physical Journal C. 81

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 )

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::81ce97e3ef6aee64c0d904ff475093fb
https://doi.org/10.1140/epjc/s10052-021-09420-1

Meson resonances in forward-angle π+π− photoproduction

Autor: Adam P. Szczepaniak, P. Bydžovský, Łukasz Bibrzycki, R. Kamiński

Publikováno v: Physics Letters B, Vol 789, Iss, Pp 287-291 (2019)
Physics Letters

Assuming that the $\pi^+\pi^-$ photoproduction at forward angles and high energies is dominated by one pion exchange we calculate the $\pi^+\pi^-$ mass distributions for low partial waves. Predictions of the model agree well Assuming that the $\pi^+\

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2f8b6eb4bcf502edfc1d13f193d72fb
https://doi.org/10.1016/j.physletb.2018.12.045

Bound states in the B -matrix formalism for the three-body scattering

Autor: Sebastian M. Dawid, Adam P. Szczepaniak

Publikováno v: Physical Review D. 103

We consider a model of relativistic three-body scattering with a bound state in the two-body sub-channel. We show that the na\"ive K-matrix type parametrization, here referred to as the B-matrix, has nonphysical singularities near the physical region

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e574fef95f1de2cfb9012e17ab175c8
https://doi.org/10.1103/physrevd.103.014009

First measurement of direct photoproduction of the a2(1320)0 meson on the proton

Autor: J. Rowley, A. I. Ostrovidov, Volker D. Burkert, A. S. Biselli, W. Phelps, K. A. Griffioen, V. Mascagna, N. Markov, M. E. McCracken, A. Hobart, Carlos A. Salgado, A. Filippi, A. Pilloni, Frank Klein, Dustin Keller, P. Eugenio, L. Marsicano, Sylvester Joosten, Maxime Defurne, M. Khandaker, M. Khachatryan, M. Osipenko, Pawel Nadel-Turonski, Michael Paolone, Alexander Schmidt, D. I. Glazier, D. Bulumulla, E. Munevar, B. S. Ishkhanov, Aditya R. Khanal, Nikolaos Sparveris, M. Ungaro, K. Hafidi, F. Bossu, M. Guidal, G. Niculescu, L. Lanza, D. G. Jenkins, I. J. D. MacGregor, R. De Vita, M. Leali, Laura Clark, M. J. Amaryan, Andrea Bianconi, C. W. Kim, W. Kim, W. Gohn, F. X. Girod, N. Tyler, C. Djalali, J. A. Tan, P. Chatagnon, G. V. Fedotov, H. Voskanyan, A. D'Angelo, T. Chetry, I. Bedlinskiy, L. Elouadrhiri, M. Holtrop, F. Hauenstein, W. J. Briscoe, E. Pasyuk, S. Strauch, K. Joo, H. Atac, D. P. Watts, H. Egiyan, G. Angelini, L. El Fassi, I. I. Strakovsky, R. Dupre, M. Battaglieri, F. Sabatié, Luciano Pappalardo, D. Heddle, A. Deur, M. Ripani, G. Gavalian, V. Mokeev, D. Marchand, V. Lucherini, V. P. Kubarovsky, Michael Dugger, Fatiha Benmokhtar, Krishna Neupane, R. G. Fersch, O. Pogorelko, O. Soto, S. Niccolai, Vincent Mathieu, P. L. Cole, Z. W. Zhao, Alessandro Rizzo, E. Golovatch, P. Lenisa, K. Hicks, M. Ehrhart, S. Adhikari, T. B. Hayward, J. Zhang, M. Hattawy, J. W. Price, N. Dashyan, Yordanka Ilieva, L. Barion, G. Rosner, William Brooks, G. Ciullo, Y. Prok, L. Venturelli, D. S. Carman, R. A. Schumacher, A. El Alaoui, X. Wei, Nicholas Zachariou, J. C. Carvajal, S. Stepanyan, E. Voutier, A. Movsisyan, Adam P. Szczepaniak, D. Sokan, Z. E. Meziani, K. Livingston, K. P. Adhikari, H. Hakobyan, H. S. Jo, A. Kim, J. Ritman, S. Diehl, D. G. Ireland, V. Crede, O. Cortes, E. L. Isupov, R. Paremuzyan, S. Boiarinov, R. Cruz-Torres, Nicholas M. Harrison, U. Shrestha, M. Contalbrigo, C. Munoz Camacho, M. H. Wood, B. McKinnon, A. Celentano, R. W. Gothe, M. Mirazita, N. Gevorgyan

Publikováno v: Physical Review C. 102

We present the first measurement of the exclusive reaction $\gamma p \rightarrow a_2(1320)^0 \, p$ in the photon energy range $3.5$-$5.5$ GeV and four-momentum transfer squared $0.2

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::15089a079de5cfb70e53c0a1854f6603
https://doi.org/10.1103/physrevc.102.032201