Production of the excited charm mesons D-1 and D-2* at HERA

Abramowicz, H.; Abt, I.; Adamczyk, L.; Adamus, M.; Aggarwal, R.; Antonelli, S.; Antonioli, P.; Antonov, A.; Arneodo, M.; Arslan, O.; Aushev, V.; Aushev, Y.; Bachynska, O.; Bamberger, A.; Barakbaev, A. N.; 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, E. G.; Borras, K.; Boscherini, D.; Bot, D.; Brock, I.; Brownson, E.; Brugnera, R.; Brummer, N.; Bruni, A.; Bruni, G.; Brzozowska, B.; Bussey, P. J.; Bylsma, B.; Caldwell, A.; Capua, M.; Carlin, R.; Catterall, C. D.; Chekanov, S.; Chwastowski, J.; Ciborowski, J.; Ciesielski, R.; Cifarelli, L.; Cindolo, F.; Contin, A.; Cooper Sarkar, A. M.; Coppola, N.; Corradi, M.; Corriveau, F.; Costa, M.; D'Agostini, Giulio; Corso, F. D.; Peso, J. D.; Dementiev, R. K.; Pasquale, S. D.; Derrick, M.; Dobur, D.; Dolgoshein, B. A.; Dolinska, G.; Doyle, A. T.; Drugakov, V.; Durkin, L. S.; Dusini, S.; Eisenberg, Y.; Ermolov, P. F.; Eskreys, A.; Fang, S.; Fazio, S.; Ferrando, J.; Ferrero, M. I.; Figiel, J.; Foster, B.; Gach, G.; Galas, A.; Gallo, E.; Garfagnini, A.; Geiser, A.; Gialas, I.; Gizhko, A.; Gladilin, L. K.; Gladkov, D.; Glasman, C.; Gogota, O.; Golubkov, Y. A.; Gottlicher, P.; Grabowska Bold, I.; Grebenyuk, J.; Gregor, I.; Grigorescu, G.; Grzelak, G.; Gueta, O.; Guzik, M.; Gwenlan, C.; Haas, T.; Hain, W.; Hamatsu, R.; Hart, J. C.; Hartmann, H.; Hartner, G.; Hilger, E.; Hochman, D.; Hori, R.; Huttmann, A.; Ibrahim, Z. A.; Iga, Y.; Ingbir, R.; Ishitsuka, M.; Jakob, H. P.; Januschek, F.; Jones, T. W.; Jungst, M.; Kadenko, I.; Kahle, B.; Kananov, S.; Kanno, T.; Karshon, U.; Karstens, F.; Katkov, I. I.; Kaur, M.; Kaur, P.; Keramidas, A.; Khein, L. A.; Kim, J. Y.; Kisielewska, D.; Kitamura, S.; Klanner, R.; Klein, U.; Koffeman, E.; Kondrashova, N.; Kononenko, O.; Kooijman, P.; Korol, I.; Korzhavina, I. A.; Kotanski, A.; Kotz, U.; Kowalski, H.; Kuprash, O.; Kuze, M.; Lee, A.; Levchenko, B. B.; Levy, A.; Libov, V.; Limentani, S.; Ling, T. Y.; Lobodzinska, E.; Lohmann, W.; Lohr, B.; Lohrmann, E.; Long, K. R.; Longhin, A.; Lontkovskyi, D.; Lukina, O. Y.; Maeda, J.; Magill, S.; Makarenko, I.; Malka, J.; Mankel, R.; Margotti, A.; Marini, G.; Martin, J. F.; Mastroberardino, A.; Melzer Pellmann, I. A.; Mergelmeyer, S.; Miglioranzi, S.; Idris, F. M.; Monaco, V.; Montanari, A.; Morris, J. D.; Mujkic, K.; Musgrave, B.; Nagano, K.; Namsoo, T.; Nania, R.; Nigro, Andrea; Ning, Y.; Nobe, T.; Notz, D.; Nowak, R. J.; Nuncio Quiroz, A. E.; B. Y., Oh; Okazaki, N.; Olkiewicz, K.; Onishchuk, Y.; Papageorgiu, K.; Parenti, A.; Paul, E.; Pawlak, J. M.; Pawlik, B.; Pelfer, P. G.; Pellegrino, A.; Perlanski, W.; Perrey, H.; Piotrzkowski, K.; Plucinski, P.; Pokrovskiy, N. S.; Polini, A.; Proskuryakov, A. S.; Przybycien, M.; Raval, A.; Reeder, D. D.; Reisert, B.; Ren, Z.; Repond, J.; Y. D., Ri; Robertson, A.; Roloff, P.; Rubinsky, I.; Ruspa, M.; Sacchi, R.; Samson, U.; Sartorelli, G.; Savin, A. A.; Saxon, D. H.; Schioppa, M.; Schlenstedt, S.; Schleper, P.; Schmidke, W. B.; Schneekloth, U.; Schonberg, V.; Schorner Sadenius, T.; Schwartz, J.; Sciulli, F.; Shcheglova, L. M.; Shehzadi, R.; Shimizu, S.; Singh, I.; Skillicorn, I. O.; Slominski, W.; Smith, W. H.; Sola, V.; Solano, A.; Son, D.; Sosnovtsev, V.; Spiridonov, A.; Stadie, H.; Stanco, L.; Stefaniuk, N.; Stern, A.; Stewart, T. P.; Stifutkin, A.; Stopa, P.; Suchkov, S.; Susinno, G.; Suszycki, L.; Sztuk Dambietz, J.; Szuba, D.; Szuba, J.; Tapper, A. D.; Tassi, E.; Terron, J.; Theedt, T.; Tiecke, H.; Tokushuku, K.; Tomaszewska, J.; Trusov, V.; Tsurugai, T.; Turcato, M.; Turkot, O.; Tymieniecka, T.; Vazquez, M.; Verbytskyi, A.; Viazlo, O.; Vlasov, N. N.; Walczak, R.; Whitmore, J. J.; Wichmann, K.; Wiggers, L.; Wing, M.; Wlasenko, M.; Wolf, G.; Wolfe, H.; Wrona, K.; Yagues Molina, A. G.; Yamada, S.; Yamazaki, Y.; Yoshida, R.; Youngman, C.; Zabiegalov, O.; Zarnecki, A. F.; Zawiejski, L.; Zenaiev, O.; Zeuner, W.; Zhautykov, B. O.; Zhmak, N.; Zichichi, A.; Zolkapli, Z.; Zotkin, D. S.

doi:10.1016/j.nuclphysb.2012.09.007

The production of the excited charm mesons D-1 (2420) and D-2*(2460) in ep collisions has been measured with the ZEUS detector at HERA using an integrated luminosity of 373 pb(-1). The masses of the neutral and charged states, the widths of the neutral states, and the helicity parameter of D-1(2420)(0) were determined and compared with other measurements and with theoretical expectations. The measured helicity parameter of the D-1(0) allows for some mixing of S- and D-waves in its decay to D*(+/-)pi(-/+). The result is also consistent with a pure D-wave decay. Ratios of branching fractions of the two decay modes of the D-2*(2460)(0) and D-2*(2460)(+/-) states were measured and compared with previous measurements. The fractions of charm quarks hadronising into D-1 and D-2* were measured and are consistent with those obtained in e(+)e(-). annihilations. (C) 2012 Elsevier B.V. All rights reserved.

Production of the excited charm mesons D-1 and D-2* at HERA / H., A., I., A., L., A., M., A., R., A., S., A., P., A., A., A., M., A., O., A., V., A., Y., A., O., B., A., B., A. N., B., G., B., G., B., F., B., N., B., D., B., et al.. - In: NUCLEAR PHYSICS. B. - ISSN 0550-3213. - 866:3(2013), pp. 229-254. [10.1016/j.nuclphysb.2012.09.007]

Production of the excited charm mesons D-1 and D-2* at HERA

H. Abramowicz;I. Abt;L. Adamczyk;M. Adamus;R. Aggarwal;S. Antonelli;P. Antonioli;A. Antonov;M. Arneodo;O. Arslan;V. Aushev;Y. Aushev;O. Bachynska;A. Bamberger;A. N. Barakbaev;G. Barbagli;G. Bari;F. Barreiro;N. Bartosik;D. Bartsch;M. Basile;O. Behnke;J. Behr;U. Behrens;L. Bellagamba;A. Bertolin;S. Bhadra;M. Bindi;C. Blohm;V. Bokhonov;T. Bold;K. Bondarenko;E. G. Boos;K. Borras;D. Boscherini;D. Bot;I. Brock;E. Brownson;R. Brugnera;N. Brummer;A. Bruni;G. Bruni;B. Brzozowska;P. J. Bussey;B. Bylsma;A. Caldwell;M. Capua;R. Carlin;C. D. Catterall;S. Chekanov;J. Chwastowski;J. Ciborowski;R. Ciesielski;L. Cifarelli;F. Cindolo;A. Contin;A. M. Cooper Sarkar;N. Coppola;M. Corradi;F. Corriveau;M. Costa;D'AGOSTINI, Giulio;F. D. Corso;J. D. Peso;R. K. Dementiev;S. D. Pasquale;M. Derrick;D. Dobur;B. A. Dolgoshein;G. Dolinska;A. T. Doyle;V. Drugakov;L. S. Durkin;S. Dusini;Y. Eisenberg;P. F. Ermolov;A. Eskreys;S. Fang;S. Fazio;J. Ferrando;M. I. Ferrero;J. Figiel;B. Foster;G. Gach;A. Galas;E. Gallo;A. Garfagnini;A. Geiser;I. Gialas;A. Gizhko;L. K. Gladilin;D. Gladkov;C. Glasman;O. Gogota;Y. A. Golubkov;P. Gottlicher;I. Grabowska Bold;J. Grebenyuk;I. Gregor;G. Grigorescu;G. Grzelak;O. Gueta;M. Guzik;C. Gwenlan;T. Haas;W. Hain;R. Hamatsu;J. C. Hart;H. Hartmann;G. Hartner;E. Hilger;D. Hochman;R. Hori;A. Huttmann;Z. A. Ibrahim;Y. Iga;R. Ingbir;M. Ishitsuka;H. P. Jakob;F. Januschek;T. W. Jones;M. Jungst;I. Kadenko;B. Kahle;S. Kananov;T. Kanno;U. Karshon;F. Karstens;I. I. Katkov;M. Kaur;P. Kaur;A. Keramidas;L. A. Khein;J. Y. Kim;D. Kisielewska;S. Kitamura;R. Klanner;U. Klein;E. Koffeman;N. Kondrashova;O. Kononenko;P. Kooijman;I. Korol;I. A. Korzhavina;A. Kotanski;U. Kotz;H. Kowalski;O. Kuprash;M. Kuze;A. Lee;B. B. Levchenko;A. Levy;V. Libov;S. Limentani;T. Y. Ling;E. Lobodzinska;W. Lohmann;B. Lohr;E. Lohrmann;K. R. Long;A. Longhin;D. Lontkovskyi;O. Y. Lukina;J. Maeda;S. Magill;I. Makarenko;J. Malka;R. Mankel;A. Margotti;G. Marini;J. F. Martin;A. Mastroberardino;I. A. Melzer Pellmann;S. Mergelmeyer;S. Miglioranzi;F. M. Idris;V. Monaco;A. Montanari;J. D. Morris;K. Mujkic;B. Musgrave;K. Nagano;T. Namsoo;R. Nania;NIGRO, Andrea;Y. Ning;T. Nobe;D. Notz;R. J. Nowak;A. E. Nuncio Quiroz;B. Y. Oh;N. Okazaki;K. Olkiewicz;Y. Onishchuk;K. Papageorgiu;A. Parenti;E. Paul;J. M. Pawlak;B. Pawlik;P. G. Pelfer;A. Pellegrino;W. Perlanski;H. Perrey;K. Piotrzkowski;P. Plucinski;N. S. Pokrovskiy;A. Polini;A. S. Proskuryakov;M. Przybycien;A. Raval;D. D. Reeder;B. Reisert;Z. Ren;J. Repond;Y. D. Ri;A. Robertson;P. Roloff;I. Rubinsky;M. Ruspa;R. Sacchi;U. Samson;G. Sartorelli;A. A. Savin;D. H. Saxon;M. Schioppa;S. Schlenstedt;P. Schleper;W. B. Schmidke;U. Schneekloth;V. Schonberg;T. Schorner Sadenius;J. Schwartz;F. Sciulli;L. M. Shcheglova;R. Shehzadi;S. Shimizu;I. Singh;I. O. Skillicorn;W. Slominski;W. H. Smith;V. Sola;A. Solano;D. Son;V. Sosnovtsev;A. Spiridonov;H. Stadie;L. Stanco;N. Stefaniuk;A. Stern;T. P. Stewart;A. Stifutkin;P. Stopa;S. Suchkov;G. Susinno;L. Suszycki;J. Sztuk Dambietz;D. Szuba;J. Szuba;A. D. Tapper;E. Tassi;J. Terron;T. Theedt;H. Tiecke;K. Tokushuku;J. Tomaszewska;V. Trusov;T. Tsurugai;M. Turcato;O. Turkot;T. Tymieniecka;M. Vazquez;A. Verbytskyi;O. Viazlo;N. N. Vlasov;R. Walczak;J. J. Whitmore;K. Wichmann;L. Wiggers;M. Wing;M. Wlasenko;G. Wolf;H. Wolfe;K. Wrona;A. G. Yagues Molina;S. Yamada;Y. Yamazaki;R. Yoshida;C. Youngman;O. Zabiegalov;A. F. Zarnecki;L. Zawiejski;O. Zenaiev;W. Zeuner;B. O. Zhautykov;N. Zhmak;A. Zichichi;Z. Zolkapli;D. S. Zotkin

2013

Abstract

The production of the excited charm mesons D-1 (2420) and D-2*(2460) in ep collisions has been measured with the ZEUS detector at HERA using an integrated luminosity of 373 pb(-1). The masses of the neutral and charged states, the widths of the neutral states, and the helicity parameter of D-1(2420)(0) were determined and compared with other measurements and with theoretical expectations. The measured helicity parameter of the D-1(0) allows for some mixing of S- and D-waves in its decay to D*(+/-)pi(-/+). The result is also consistent with a pure D-wave decay. Ratios of branching fractions of the two decay modes of the D-2*(2460)(0) and D-2*(2460)(+/-) states were measured and compared with previous measurements. The fractions of charm quarks hadronising into D-1 and D-2* were measured and are consistent with those obtained in e(+)e(-). annihilations. (C) 2012 Elsevier B.V. All rights reserved.

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				01 Pubblicazione su rivista::01a Articolo in rivista
			
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				Production of the excited charm mesons D-1 and D-2* at HERA / H., A., I., A., L., A., M., A., R., A., S., A., P., A., A., A., M., A., O., A., V., A., Y., A., O., B., A., B., A. N., B., G., B., G., B., F., B., N., B., D., B., et al.. - In: NUCLEAR PHYSICS. B. - ISSN 0550-3213. - 866:3(2013), pp. 229-254. [10.1016/j.nuclphysb.2012.09.007]
			
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/517829

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