Exclusive electroproduction of two pions at HERA

Abramowicz, H; Abt, I; Adamczyk, L; Adamus, M; Aggarwal, R; Antonelli, S; Antonioli, P; Antonov, A; Arneodo, M; Ashery, D; Aushev, V; Aushev, Y; Bachynska, O; Bamberger, A; Barakbaev, An; Barbagli, G; Bari, G; Barreiro, F; Bartosik, N; Bartsch, D; Basile, M; Behnke, O; Behr, J; Behrens, U; Bellagamba, L; Bertolin, A; Bhadra, S; Bindi, M; Blohm, C; Bokhonov, V; Bold, T; Bondarenko, K; Boos, Eg; Borras, K; Boscherini, D; Bot, D; Brock, I; Brownson, E; Brugnera, R; Brummer, N; Bruni, A; Bruni, G; Brzozowska, B; Bussey, Pj; Bylsma, B; Caldwell, A; Capua, Marcella; Carlin, R; Catterall, Cd; Chekanov, S; Chwastowski, J; Ciborowski, J; Ciesielski, R; Cifarelli, L; Cindolo, F; Contin, A; Cooper Sarkar AM,; Coppola, N; Corradi, M; Corriveau, F; Costa, M; D'Agostini, G; Dal Corso, F; del Peso, J; Dementiev, Rk; De Pasquale, S; Derrick, M; Devenish, Rce; Dobur, D; Dolgoshein, Ba; Dolinska, G; Doyle, At; Drugakov, V; Durkin, Ls; Dusini, S; Eisenberg, Y; Ermolov, Pf; Eskreys, S; Fang, S; Fazio, S; Ferrando, J; Ferrero, Mi; Figiel, J; Forrest, M; Foster, B; Gach, G; Galas, A; Gallo, E; Garfagnini, A; Geiser, A; Gialas, I; Gladilin, Lk; Gladkov, D; Glasman, C; Gogota, O; Golubkov, Ya; Gottlicher, P; Grabowska Bold, I; Grebenyuk, J; Gregor, I; Grigorescu, G; Grzelak, G; Gueta, O; Gurvich, E; Guzik, M; Gwenlan, C; Haas, T; Hain, W; Hamatsu, R; Hart, Jc; Hartmann, H; Hartner, G; Hilger, E; Hochman, D; Hori, R; Horton, K; Huttmann, A; Ibrahim, Za; Iga, Y; Ingbir, R; Ishitsuka, M; Jakob, Hp; Januschek, F; Jones, Tw; Jungst, M; Kadenko, I; Kahle, B; Kananov, S; Kanno, T; Karshon, U; Karstens, F; Katkov, Ii; Kaur, M; Kaur, P; Keramidas, A; Khein, La; Kim, Jy; Kisielewska, D; Kitamura, S; Klanner, R; Klein, U; Koffeman, E; Kooijman, P; Korol, I; Korzhavina, Ia; Kotanski, A; Kotz, U; Kowalski, H; Kuprash, O; Kuze, M; Lee, A; Levchenko, Bb; Levy, A; Libov, V; Limentani, S; Ling, Ty; Lisovyi, M; Lobodzinska, E; Lohmann, W; Lohr, B; Lohrmann, E; Long, Kr; Longhin, A; Lontkovskyi, D; Lukina, Oy; Maeda, J; Magill, S; Makarenko, I; Malka, J; Mankel, R; Margotti, A; Marini, G; Martin, Jf; Mastroberardino, Anna; Mattingly, Mck; Melzer Pellmann IA,; Mergelmeyer, S; Miglioranzi, S; Idris, Fm; Monaco, V; Montanari, A; Morris, Jd; Mujkic, K; Musgrave, B; Nagano, K; Namsoo, T; Nania, R; Nigro, A; Ning, Y; Nobe, T; Noor, U; Notz, D; Nowak, Rj; Nuncio Quiroz AE,; Oh, By; Okazaki, N; Oliver, K; Olkiewicz, K; Onishchuk, Y; Papageorgiu, K; Parenti, A; Paul, E; Pawlak, Jm; Pawlik, B; Pelfer, Pg; Pellegrino, A; Perlanski, W; Perrey, H; Piotrzkowski, K; Plucinski, P; Pokrovskiy, Ns; Polini, A; Proskuryakov, As; Przybycien, M; Raval, A; Reeder, Dd; Reisert, B; Ren, Z; Repond, J; Ri, Yd; Robertson, A; Roloff, P; Rubinsky, I; Ruspa, M; Sacchi, R; Salii, A; Samson, U; Sartorelli, G; Savin, Aa; Saxon, Dh; Schioppa, Marco; Schlenstedt, S; Schleper, P; Schmidke, Wb; Schneekloth, U; Schonberg, V; Schorner Sadenius, T; Schwartz, J; Sciulli, F; Shcheglova, Lm; Shehzadi, R; Shimizu, S; Singh, I; Skillicorn, Io; Slominski, W; Smith, Wh; Sola, V; Solano, A; Son, D; Sosnovtsev, V; Spiridonov, A; Stadie, H; Stanco, L; Stern, A; Stewart, Tp; Stifutkin, A; Stopa, P; Suchkov, S; Susinno, G; Suszycki, L; Sztuk Dambietz, J; Szuba, D; Szuba, J; Tapper, Ad; Tassi, Enrico; Terron, J; Theedt, T; Tiecke, H; Tokushuku, K; Tomalak, O; Tomaszewska, J; Tsurugai, T; Turcato, M; Tymieniecka, T; Vazquez, M; Verbytskyi, A; Viazlo, O; Vlasov, Nn; Volynets, O; Walczak, R; Abdullah, Watw; Whitmore, Jj; Wiggers, L; Wing, M; Wlasenko, M; Wolf, G; Wolfe, H; Wrona, K; Yagues Molina AG,; Yamada, S; Yamazaki, Y; Yoshida, R; Youngman, C; Zarnecki, Af; Zawiejski, L; Zenaiev, O; Zeuner, W; Zhautykov, Bo; Zhmak, N; Zhou, C; Zichichi, A; Zolkapli, Z; Zolko, M; Zotkin, Ds

doi:10.1140/epjc/s10052-012-1869-5

The exclusive electroproduction of two pions in the mass range 0.4 < M-pi pi < 2.5 GeV has been studied with the ZEUS detector at HERA using an integrated luminosity of 82 pb(-1). The analysis was carried out in the kine-matic range of 2 < Q(2) < 80 GeV2, 32 < W < 180 GeV and vertical bar t vertical bar < 0.6 GeV2, where Q(2) is the photon virtuality, W is the photon-proton centre-of-mass energy and t is the squared four-momentum transfer at the proton vertex. The two-pion invariant-mass distribution is interpreted in terms of the pion electromagnetic form factor, vertical bar F(M-pi pi)vertical bar, assuming that the studied mass range includes the contributions of the rho, rho' and rho '' vector-meson states. The masses and widths of the resonances were obtained and the Q(2) dependence of the cross-section ratios sigma(rho ' -> pi pi)/sigma(rho) and sigma (rho '' -> pi pi)/sigma(rho) was extracted. The pion form factor obtained in the present analysis is compared to that obtained in e(+) e(-) -> pi(+) pi(-). RI Ferrando, James/A-9192-2012; Doyle, Anthony/C-5889-2009; Fazio, Salvatore /G-5156-2010; Lukina, Olga/D-8875-2012; Gladilin, Leonid/B-5226-2011; Barreiro, Fernando/D-9808-2012; Shcheglova, Lydia/E-2221-2012; Katkov, Igor/E-2627-2012

Scheda prodotto non validato

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Titolo:	Exclusive electroproduction of two pions at HERA
Autori:	Abramowicz H Abt I Adamczyk L Adamus M Aggarwal R Antonelli S Antonioli P Antonov A Arneodo M Ashery D Aushev V Aushev Y Bachynska O Bamberger A Barakbaev AN Barbagli G Bari G Barreiro F Bartosik N Bartsch D Basile M Behnke O Behr J Behrens U Bellagamba L Bertolin A Bhadra S Bindi M Blohm C Bokhonov V Bold T Bondarenko K Boos EG Borras K Boscherini D Bot D Brock I Brownson E Brugnera R Brummer N Bruni A Bruni G Brzozowska B Bussey PJ Bylsma B Caldwell A CAPUA, Marcella Carlin R Catterall CD Chekanov S Chwastowski J Ciborowski J Ciesielski R Cifarelli L Cindolo F Contin A Cooper Sarkar AM Coppola N Corradi M Corriveau F Costa M D'Agostini G Dal Corso F del Peso J Dementiev RK De Pasquale S Derrick M Devenish RCE Dobur D Dolgoshein BA Dolinska G Doyle AT Drugakov V Durkin LS Dusini S Eisenberg Y Ermolov PF Eskreys S Fang S Fazio S Ferrando J Ferrero MI Figiel J Forrest M Foster B Gach G Galas A Gallo E Garfagnini A Geiser A Gialas I Gladilin LK Gladkov D Glasman C Gogota O Golubkov YA Gottlicher P Grabowska Bold I Grebenyuk J Gregor I Grigorescu G Grzelak G Gueta O Gurvich E Guzik M Gwenlan C Haas T Hain W Hamatsu R Hart JC Hartmann H Hartner G Hilger E Hochman D Hori R Horton K Huttmann A Ibrahim ZA Iga Y Ingbir R Ishitsuka M Jakob HP Januschek F Jones TW Jungst M Kadenko I Kahle B Kananov S Kanno T Karshon U Karstens F Katkov II Kaur M Kaur P Keramidas A Khein LA Kim JY Kisielewska D Kitamura S Klanner R Klein U Koffeman E Kooijman P Korol I Korzhavina IA Kotanski A Kotz U Kowalski H Kuprash O Kuze M Lee A Levchenko BB Levy A Libov V Limentani S Ling TY Lisovyi M Lobodzinska E Lohmann W Lohr B Lohrmann E Long KR Longhin A Lontkovskyi D Lukina OY Maeda J Magill S Makarenko I Malka J Mankel R Margotti A Marini G Martin JF MASTROBERARDINO, Anna Mattingly MCK Melzer Pellmann IA Mergelmeyer S Miglioranzi S Idris FM Monaco V Montanari A Morris JD Mujkic K Musgrave B Nagano K Namsoo T Nania R Nigro A Ning Y Nobe T Noor U Notz D Nowak RJ Nuncio Quiroz AE Oh BY Okazaki N Oliver K Olkiewicz K Onishchuk Y Papageorgiu K Parenti A Paul E Pawlak JM Pawlik B Pelfer PG Pellegrino A Perlanski W Perrey H Piotrzkowski K Plucinski P Pokrovskiy NS Polini A Proskuryakov AS Przybycien M Raval A Reeder DD Reisert B Ren Z Repond J Ri YD Robertson A Roloff P Rubinsky I Ruspa M Sacchi R Salii A Samson U Sartorelli G Savin AA Saxon DH SCHIOPPA, Marco Schlenstedt S Schleper P Schmidke WB Schneekloth U Schonberg V Schorner Sadenius T Schwartz J Sciulli F Shcheglova LM Shehzadi R Shimizu S Singh I Skillicorn IO Slominski W Smith WH Sola V Solano A Son D Sosnovtsev V Spiridonov A Stadie H Stanco L Stern A Stewart TP Stifutkin A Stopa P Suchkov S Susinno G Suszycki L Sztuk Dambietz J Szuba D Szuba J Tapper AD TASSI, Enrico Terron J Theedt T Tiecke H Tokushuku K Tomalak O Tomaszewska J Tsurugai T Turcato M Tymieniecka T Vazquez M Verbytskyi A Viazlo O Vlasov NN Volynets O Walczak R Abdullah WATW Whitmore JJ Wiggers L Wing M Wlasenko M Wolf G Wolfe H Wrona K Yagues Molina AG Yamada S Yamazaki Y Yoshida R Youngman C Zarnecki AF Zawiejski L Zenaiev O Zeuner W Zhautykov BO Zhmak N Zhou C Zichichi A Zolkapli Z Zolko M Zotkin DS mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2012
Rivista:	THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS
Abstract:	The exclusive electroproduction of two pions in the mass range 0.4 < M-pi pi < 2.5 GeV has been studied with the ZEUS detector at HERA using an integrated luminosity of 82 pb(-1). The analysis was carried out in the kine-matic range of 2 < Q(2) < 80 GeV2, 32 < W < 180 GeV and vertical bar t vertical bar < 0.6 GeV2, where Q(2) is the photon virtuality, W is the photon-proton centre-of-mass energy and t is the squared four-momentum transfer at the proton vertex. The two-pion invariant-mass distribution is interpreted in terms of the pion electromagnetic form factor, vertical bar F(M-pi pi)vertical bar, assuming that the studied mass range includes the contributions of the rho, rho' and rho '' vector-meson states. The masses and widths of the resonances were obtained and the Q(2) dependence of the cross-section ratios sigma(rho ' -> pi pi)/sigma(rho) and sigma (rho '' -> pi pi)/sigma(rho) was extracted. The pion form factor obtained in the present analysis is compared to that obtained in e(+) e(-) -> pi(+) pi(-). RI Ferrando, James/A-9192-2012; Doyle, Anthony/C-5889-2009; Fazio, Salvatore /G-5156-2010; Lukina, Olga/D-8875-2012; Gladilin, Leonid/B-5226-2011; Barreiro, Fernando/D-9808-2012; Shcheglova, Lydia/E-2221-2012; Katkov, Igor/E-2627-2012
Handle:	http://hdl.handle.net/20.500.11770/134468
Appare nelle tipologie:	1.1 Articolo in rivista

File in questo prodotto:

Non ci sono file associati a questo prodotto.

Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.11770/134468

Citazioni

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

CINECA IRIS Institutional Research Information System

Scheda prodotto non validato

File in questo prodotto: