Observation of η_{c}(1S) and η_{c}(2S) decays to K^{+}K^{-}π^{+}π^{-}π^{0} in two-photon interactions

del Amo Sanchez, P.; Lees, J.; Poireau, V.; Prencipe, E.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Martinelli, M.; Palano, A.; Pappagallo, M.; Eigen, G.; Stugu, B.; Sun, L.; Battaglia, M.; Brown, D.; Hooberman, B.; Kerth, L.; Kolomensky, Y.; Lynch, G.; Osipenkov, I.; Tanabe, T.; Hawkes, C.; Watson, A.; Koch, H.; Schroeder, T.; Asgeirsson, D.; Hearty, C.; Mattison, T.; Mckenna, J.; Khan, A.; Randle Conde, A.; Blinov, V.; Buzykaev, A.; Druzhinin, V.; Golubev, V.; Onuchin, A.; Serednyakov, S.; Skovpen, Y.; Solodov, E.; Todyshev, K.; Yushkov, A.; Bondioli, M.; Curry, S.; Kirkby, D.; Lankford, A.; Mandelkern, M.; Martin, E.; Stoker, D.; Atmacan, H.; Gary, J.; Liu, F.; Long, O.; Vitug, G.; Campagnari, C.; Hong, T.; Kovalskyi, D.; Richman, J.; West, C.; Eisner, A.; Heusch, C.; Kroseberg, J.; Lockman, W.; Martinez, A.; Schalk, T.; Schumm, B.; Seiden, A.; Winstrom, L.; Cheng, C.; Doll, D.; Echenard, B.; Hitlin, D.; Ongmongkolkul, P.; Porter, F.; Rakitin, A.; Andreassen, R.; Dubrovin, M.; Mancinelli, G.; Meadows, B.; Sokoloff, M.; Bloom, P.; Ford, W.; Gaz, A.; Nagel, M.; Nauenberg, U.; Smith, J.; Wagner, S.; Ayad, R.; Toki, W.; Jasper, H.; Karbach, T.; Merkel, J.; Petzold, A.; Spaan, B.; Wacker, K.; Kobel, M.; Schubert, K.; Schwierz, R.; Bernard, D.; Verderi, M.; Clark, P.; Playfer, S.; Watson, J.; Andreotti, M.; Bettoni, D.; Bozzi, C.; Calabrese, R.; Cecchi, A.; Cibinetto, G.; Fioravanti, E.; Franchini, P.; Luppi, E.; Munerato, M.; Negrini, M.; Petrella, A.; Piemontese, L.; Baldini Ferroli, R.; Calcaterra, A.; de Sangro, R.; Finocchiaro, G.; Nicolaci, M.; Pacetti, S.; Patteri, P.; Peruzzi, I.; Piccolo, M.; Rama, M.; Zallo, A.; Contri, R.; Guido, E.; Lo Vetere, M.; Monge, M.; Passaggio, S.; Patrignani, C.; Robutti, E.; Tosi, S.; Bhuyan, B.; Prasad, V.; Lee, C.; Morii, M.; Adametz, A.; Marks, J.; Uwer, U.; Bernlochner, F.; Ebert, M.; Lacker, H.; Lueck, T.; Volk, A.; Dauncey, P.; Tibbetts, M.; Behera, P.; Mallik, U.; Chen, C.; Cochran, J.; Crawley, H.; Dong, L.; Meyer, W.; Prell, S.; Rosenberg, E.; Rubin, A.; Gritsan, A.; Guo, Z.; Arnaud, N.; Davier, M.; Derkach, D.; Firmino da Costa, J.; Grosdidier, G.; Le Diberder, F.; Lutz, A.; Malaescu, B.; Perez, A.; Roudeau, P.; Schune, M.; Serrano, J.; Sordini, V.; Stocchi, A.; Wang, L.; Wormser, G.; Lange, D.; Wright, D.; Bingham, I.; Chavez, C.; Coleman, J.; Fry, J.; Gabathuler, E.; Gamet, R.; Hutchcroft, D.; Payne, D.; Touramanis, C.; Bevan, A.; Di Lodovico, F.; Sacco, R.; Sigamani, M.; Cowan, G.; Paramesvaran, S.; Wren, A.; Brown, D.; Davis, C.; Denig, A.; Fritsch, M.; Gradl, W.; Hafner, A.; Alwyn, K.; Bailey, D.; Barlow, R.; Jackson, G.; Lafferty, G.; Anderson, J.; Cenci, R.; Jawahery, A.; Roberts, D.; Simi, G.; Tuggle, J.; Dallapiccola, C.; Salvati, E.; Cowan, R.; Dujmic, D.; Sciolla, G.; Zhao, M.; Lindemann, D.; Patel, P.; Robertson, S.; Schram, M.; Biassoni, P.; Lazzaro, A.; Lombardo, V.; Palombo, F.; Stracka, S.; Cremaldi, L.; Godang, R.; Kroeger, R.; Sonnek, P.; Summers, D.; Nguyen, X.; Simard, M.; Taras, P.; De Nardo, G.; Monorchio, D.; Onorato, G.; Sciacca, C.; Raven, G.; Snoek, H.; Jessop, C.; Knoepfel, K.; Losecco, J.; Wang, W.; Corwin, L.; Honscheid, K.; Kass, R.; Morris, J.; Blount, N.; Brau, J.; Frey, R.; Igonkina, O.; Kolb, J.; Rahmat, R.; Sinev, N.; Strom, D.; Strube, J.; Torrence, E.; Castelli, G.; Feltresi, E.; Gagliardi, N.; Margoni, M.; Morandin, M.; Posocco, M.; Rotondo, M.; Simonetto, F.; Stroili, R.; Ben Haim, E.; Bonneaud, G.; Briand, H.; Calderini, G.; Chauveau, J.; Hamon, O.; Leruste, P.; Marchiori, G.; Ocariz, J.; Prendki, J.; Sitt, S.; Biasini, M.; Manoni, E.; Rossi, A.; Angelini, C.; Batignani, G.; Bettarini, S.; Carpinelli, M.; Casarosa, G.; Cervelli, A.; Forti, F.; Giorgi, M.; Lusiani, A.; Neri, N.; Paoloni, E.; Rizzo, G.; Walsh, J.; Lopes Pegna, D.; Lu, C.; Olsen, J.; Smith, A.; Telnov, A.; Anulli, F.; Baracchini, E.; Cavoto, G.; Faccini, R.; Ferrarotto, F.; Ferroni, F.; Gaspero, M.; Li Gioi, L.; Mazzoni, M.; Piredda, G.; Renga, F.; Hartmann, T.; Leddig, T.; Schröder, H.; Waldi, R.; Adye, T.; Franek, B.; Olaiya, E.; Wilson, F.; Emery, S.; Hamel de Monchenault, G.; Vasseur, G.; Yèche, C.; Zito, M.; Allen, M.; Aston, D.; Bard, D.; Bartoldus, R.; Benitez, J.; Cartaro, C.; Convery, M.; Dorfan, J.; Dubois Felsmann, G.; Dunwoodie, W.; Field, R.; Franco Sevilla, M.; Fulsom, B.; Gabareen, A.; Graham, M.; Grenier, P.; Hast, C.; Innes, W.; Kelsey, M.; Kim, H.; Kim, P.; Kocian, M.; Leith, D.; Li, S.; Lindquist, B.; Luitz, S.; Luth, V.; Lynch, H.; Macfarlane, D.; Marsiske, H.; Muller, D.; Neal, H.; Nelson, S.; O’Grady, C.; Ofte, I.; Perl, M.; Pulliam, T.; Ratcliff, B.; Roodman, A.; Salnikov, A.; Santoro, V.; Schindler, R.; Schwiening, J.; Snyder, A.; Su, D.; Sullivan, M.; Sun, S.; Suzuki, K.; Thompson, J.; Va’Vra, J.; Wagner, A.; Weaver, M.; West, C.; Wisniewski, W.; Wittgen, M.; Wright, D.; Wulsin, H.; Yarritu, A.; Young, C.; Ziegler, V.; Chen, X.; Park, W.; Purohit, M.; White, R.; Wilson, J.; Sekula, S.; Bellis, M.; Burchat, P.; Edwards, A.; Miyashita, T.; Ahmed, S.; Alam, M.; Ernst, J.; Pan, B.; Saeed, M.; Zain, S.; Guttman, N.; Soffer, A.; Lund, P.; Spanier, S.; Eckmann, R.; Ritchie, J.; Ruland, A.; Schilling, C.; Schwitters, R.; Wray, B.; Izen, J.; Lou, X.; Bianchi, F.; Gamba, D.; Pelliccioni, M.; Bomben, M.; Lanceri, L.; Vitale, L.; Lopez March, N.; Martinez Vidal, F.; Milanes, D.; Oyanguren, A.; Albert, J.; Banerjee, S.; Choi, H.; Hamano, K.; King, G.; Kowalewski, R.; Lewczuk, M.; Nugent, I.; Roney, J.; Sobie, R.; Gershon, T.; Harrison, P.; Latham, T.; Puccio, E.; Band, H.; Dasu, S.; Flood, K.; Pan, Y.; Prepost, R.; Vuosalo, C.; Wu, S.

doi:10.1103/PhysRevD.84.012004

We study the processes γγ→KS0K±π∓ and γγ→K+K-π+π-π0 using a data sample of 519.2fb-1 recorded by the BABAR detector at the PEP-II asymmetric-energy e+e- collider at center-of-mass energies near the Υ(nS) (n=2, 3, 4) resonances. We observe the ηc(1S), χc0(1P) and ηc(2S) resonances produced in two-photon interactions and decaying to K+K-π+π-π0, with significances of 18.1, 5.4 and 5.3 standard deviations (including systematic errors), respectively, and report 4.0σ evidence of the χc2(1P) decay to this final state. We measure the ηc(2S) mass and width in KS0K±π∓ decays, and obtain the values m(ηc(2S))=3638.5±1.5±0.8 MeV/c2 and Γ(ηc(2S))=13.4±4.6±3.2 MeV, where the first uncertainty is statistical and the second is systematic. We measure the two-photon width times branching fraction for the reported resonance signals, and search for the χc2(2P) resonance, but no significant signal is observed.

Observation of η_{c}(1S) and η_{c}(2S) decays to K^{+}K^{-}π^{+}π^{-}π^{0} in two-photon interactions / P. del Amo Sanchez, J. Lees, V. Poireau, E. Prencipe, V. Tisserand, J. Garra Tico, E. Grauges, M. Martinelli, A. Palano, M. Pappagallo, G. Eigen, B. Stugu, L. Sun, M. Battaglia, D. Brown, B. Hooberman, L. Kerth, Y. Kolomensky, G. Lynch, I. Osipenkov, T. Tanabe, C. Hawkes, A. Watson, H. Koch, T. Schroeder, D. Asgeirsson, C. Hearty, T. Mattison, J. McKenna, A. Khan, A. Randle-Conde, V. Blinov, A. Buzykaev, V. Druzhinin, V. Golubev, A. Onuchin, S. Serednyakov, Y. Skovpen, E. Solodov, K. Todyshev, A. Yushkov, M. Bondioli, S. Curry, D. Kirkby, A. Lankford, M. Mandelkern, E. Martin, D. Stoker, H. Atmacan, J. Gary, F. Liu, O. Long, G. Vitug, C. Campagnari, T. Hong, D. Kovalskyi, J. Richman, C. West, A. Eisner, C. Heusch, J. Kroseberg, W. Lockman, A. Martinez, T. Schalk, B. Schumm, A. Seiden, L. Winstrom, C. Cheng, D. Doll, B. Echenard, D. Hitlin, P. Ongmongkolkul, F. Porter, A. Rakitin, R. Andreassen, M. Dubrovin, G. Mancinelli, B. Meadows, M. Sokoloff, P. Bloom, W. Ford, A. Gaz, M. Nagel, U. Nauenberg, J. Smith, S. Wagner, R. Ayad, W. Toki, H. Jasper, T. Karbach, J. Merkel, A. Petzold, B. Spaan, K. Wacker, M. Kobel, K. Schubert, R. Schwierz, D. Bernard, M. Verderi, P. Clark, S. Playfer, J. Watson, M. Andreotti, D. Bettoni, C. Bozzi, R. Calabrese, A. Cecchi, G. Cibinetto, E. Fioravanti, P. Franchini, E. Luppi, M. Munerato, M. Negrini, A. Petrella, L. Piemontese, R. Baldini-Ferroli, A. Calcaterra, R. de Sangro, G. Finocchiaro, M. Nicolaci, S. Pacetti, P. Patteri, I. Peruzzi, M. Piccolo, M. Rama, A. Zallo, R. Contri, E. Guido, M. Lo Vetere, M. Monge, S. Passaggio, C. Patrignani, E. Robutti, S. Tosi, B. Bhuyan, V. Prasad, C. Lee, M. Morii, A. Adametz, J. Marks, U. Uwer, F. Bernlochner, M. Ebert, H. Lacker, T. Lueck, A. Volk, P. Dauncey, M. Tibbetts, P. Behera, U. Mallik, C. Chen, J. Cochran, H. Crawley, L. Dong, W. Meyer, S. Prell, E. Rosenberg, A. Rubin, A. Gritsan, Z. Guo, N. Arnaud, M. Davier, D. Derkach, J. Firmino da Costa, G. Grosdidier, F. Le Diberder, A. Lutz, B. Malaescu, A. Perez, P. Roudeau, M. Schune, J. Serrano, V. Sordini, A. Stocchi, L. Wang, G. Wormser, D. Lange, D. Wright, I. Bingham, C. Chavez, J. Coleman, J. Fry, E. Gabathuler, R. Gamet, D. Hutchcroft, D. Payne, C. Touramanis, A. Bevan, F. Di Lodovico, R. Sacco, M. Sigamani, G. Cowan, S. Paramesvaran, A. Wren, D. Brown, C. Davis, A. Denig, M. Fritsch, W. Gradl, A. Hafner, K. Alwyn, D. Bailey, R. Barlow, G. Jackson, G. Lafferty, J. Anderson, R. Cenci, A. Jawahery, D. Roberts, G. Simi, J. Tuggle, C. Dallapiccola, E. Salvati, R. Cowan, D. Dujmic, G. Sciolla, M. Zhao, D. Lindemann, P. Patel, S. Robertson, M. Schram, P. Biassoni, A. Lazzaro, V. Lombardo, F. Palombo, S. Stracka, L. Cremaldi, R. Godang, R. Kroeger, P. Sonnek, D. Summers, X. Nguyen, M. Simard, P. Taras, G. De Nardo, D. Monorchio, G. Onorato, C. Sciacca, G. Raven, H. Snoek, C. Jessop, K. Knoepfel, J. LoSecco, W. Wang, L. Corwin, K. Honscheid, R. Kass, J. Morris, N. Blount, J. Brau, R. Frey, O. Igonkina, J. Kolb, R. Rahmat, N. Sinev, D. Strom, J. Strube, E. Torrence, G. Castelli, E. Feltresi, N. Gagliardi, M. Margoni, M. Morandin, M. Posocco, M. Rotondo, F. Simonetto, R. Stroili, E. Ben-Haim, G. Bonneaud, H. Briand, G. Calderini, J. Chauveau, O. Hamon, P. Leruste, G. Marchiori, J. Ocariz, J. Prendki, S. Sitt, M. Biasini, E. Manoni, A. Rossi, C. Angelini, G. Batignani, S. Bettarini, M. Carpinelli, G. Casarosa, A. Cervelli, F. Forti, M. Giorgi, A. Lusiani, N. Neri, E. Paoloni, G. Rizzo, J. Walsh, D. Lopes Pegna, C. Lu, J. Olsen, A. Smith, A. Telnov, F. Anulli, E. Baracchini, G. Cavoto, R. Faccini, F. Ferrarotto, F. Ferroni, M. Gaspero, L. Li Gioi, M. Mazzoni, G. Piredda, F. Renga, T. Hartmann, T. Leddig, H. Schröder, R. Waldi, T. Adye, B. Franek, E. Olaiya, F. Wilson, S. Emery, G. Hamel de Monchenault, G. Vasseur, C. Yèche, M. Zito, M. Allen, D. Aston, D. Bard, R. Bartoldus, J. Benitez, C. Cartaro, M. Convery, J. Dorfan, G. Dubois-Felsmann, W. Dunwoodie, R. Field, M. Franco Sevilla, B. Fulsom, A. Gabareen, M. Graham, P. Grenier, C. Hast, W. Innes, M. Kelsey, H. Kim, P. Kim, M. Kocian, D. Leith, S. Li, B. Lindquist, S. Luitz, V. Luth, H. Lynch, D. MacFarlane, H. Marsiske, D. Muller, H. Neal, S. Nelson, C. O’Grady, I. Ofte, M. Perl, T. Pulliam, B. Ratcliff, A. Roodman, A. Salnikov, V. Santoro, R. Schindler, J. Schwiening, A. Snyder, D. Su, M. Sullivan, S. Sun, K. Suzuki, J. Thompson, J. Va’vra, A. Wagner, M. Weaver, C. West, W. Wisniewski, M. Wittgen, D. Wright, H. Wulsin, A. Yarritu, C. Young, V. Ziegler, X. Chen, W. Park, M. Purohit, R. White, J. Wilson, S. Sekula, M. Bellis, P. Burchat, A. Edwards, T. Miyashita, S. Ahmed, M. Alam, J. Ernst, B. Pan, M. Saeed, S. Zain, N. Guttman, A. Soffer, P. Lund, S. Spanier, R. Eckmann, J. Ritchie, A. Ruland, C. Schilling, R. Schwitters, B. Wray, J. Izen, X. Lou, F. Bianchi, D. Gamba, M. Pelliccioni, M. Bomben, L. Lanceri, L. Vitale, N. Lopez-March, F. Martinez-Vidal, D. Milanes, A. Oyanguren, J. Albert, S. Banerjee, H. Choi, K. Hamano, G. King, R. Kowalewski, M. Lewczuk, I. Nugent, J. Roney, R. Sobie, T. Gershon, P. Harrison, T. Latham, E. Puccio, H. Band, S. Dasu, K. Flood, Y. Pan, R. Prepost, C. Vuosalo, S. Wu. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 84:1(2011), pp. 012004.012004.1-012004.012004.9. [10.1103/PhysRevD.84.012004]

Observation of η_{c}(1S) and η_{c}(2S) decays to K^{+}K^{-}π^{+}π^{-}π^{0} in two-photon interactions

P. del Amo Sanchez;J. Lees;V. Poireau;E. Prencipe;V. Tisserand;J. Garra Tico;E. Grauges;M. Martinelli;A. Palano;M. Pappagallo;G. Eigen;B. Stugu;L. Sun;M. Battaglia;D. Brown;B. Hooberman;L. Kerth;Y. Kolomensky;G. Lynch;I. Osipenkov;T. Tanabe;C. Hawkes;A. Watson;H. Koch;T. Schroeder;D. Asgeirsson;C. Hearty;T. Mattison;J. McKenna;A. Khan;A. Randle Conde;V. Blinov;A. Buzykaev;V. Druzhinin;V. Golubev;A. Onuchin;S. Serednyakov;Y. Skovpen;E. Solodov;K. Todyshev;A. Yushkov;M. Bondioli;S. Curry;D. Kirkby;A. Lankford;M. Mandelkern;E. Martin;D. Stoker;H. Atmacan;J. Gary;F. Liu;O. Long;G. Vitug;C. Campagnari;T. Hong;D. Kovalskyi;J. Richman;C. West;A. Eisner;C. Heusch;J. Kroseberg;W. Lockman;A. Martinez;T. Schalk;B. Schumm;A. Seiden;L. Winstrom;C. Cheng;D. Doll;B. Echenard;D. Hitlin;P. Ongmongkolkul;F. Porter;A. Rakitin;R. Andreassen;M. Dubrovin;G. Mancinelli;B. Meadows;M. Sokoloff;P. Bloom;W. Ford;A. Gaz;M. Nagel;U. Nauenberg;J. Smith;S. Wagner;R. Ayad;W. Toki;H. Jasper;T. Karbach;J. Merkel;A. Petzold;B. Spaan;K. Wacker;M. Kobel;K. Schubert;R. Schwierz;D. Bernard;M. Verderi;P. Clark;S. Playfer;J. Watson;M. Andreotti;D. Bettoni;C. Bozzi;R. Calabrese;A. Cecchi;G. Cibinetto;E. Fioravanti;P. Franchini;E. Luppi;M. Munerato;M. Negrini;A. Petrella;L. Piemontese;R. Baldini Ferroli;A. Calcaterra;R. de Sangro;G. Finocchiaro;M. Nicolaci;S. Pacetti;P. Patteri;I. Peruzzi;M. Piccolo;M. Rama;A. Zallo;R. Contri;E. Guido;M. Lo Vetere;M. Monge;S. Passaggio;C. Patrignani;E. Robutti;S. Tosi;B. Bhuyan;V. Prasad;C. Lee;M. Morii;A. Adametz;J. Marks;U. Uwer;F. Bernlochner;M. Ebert;H. Lacker;T. Lueck;A. Volk;P. Dauncey;M. Tibbetts;P. Behera;U. Mallik;C. Chen;J. Cochran;H. Crawley;L. Dong;W. Meyer;S. Prell;E. Rosenberg;A. Rubin;A. Gritsan;Z. Guo;N. Arnaud;M. Davier;D. Derkach;J. Firmino da Costa;G. Grosdidier;F. Le Diberder;A. Lutz;B. Malaescu;A. Perez;P. Roudeau;M. Schune;J. Serrano;V. Sordini;A. Stocchi;L. Wang;G. Wormser;D. Lange;D. Wright;I. Bingham;C. Chavez;J. Coleman;J. Fry;E. Gabathuler;R. Gamet;D. Hutchcroft;D. Payne;C. Touramanis;A. Bevan;F. Di Lodovico;R. Sacco;M. Sigamani;G. Cowan;S. Paramesvaran;A. Wren;D. Brown;C. Davis;A. Denig;M. Fritsch;W. Gradl;A. Hafner;K. Alwyn;D. Bailey;R. Barlow;G. Jackson;G. Lafferty;J. Anderson;R. Cenci;A. Jawahery;D. Roberts;G. Simi;J. Tuggle;C. Dallapiccola;E. Salvati;R. Cowan;D. Dujmic;G. Sciolla;M. Zhao;D. Lindemann;P. Patel;S. Robertson;M. Schram;P. Biassoni;A. Lazzaro;V. Lombardo;F. Palombo;S. Stracka;L. Cremaldi;R. Godang;R. Kroeger;P. Sonnek;D. Summers;X. Nguyen;M. Simard;P. Taras;G. De Nardo;D. Monorchio;G. Onorato;C. Sciacca;G. Raven;H. Snoek;C. Jessop;K. Knoepfel;J. LoSecco;W. Wang;L. Corwin;K. Honscheid;R. Kass;J. Morris;N. Blount;J. Brau;R. Frey;O. Igonkina;J. Kolb;R. Rahmat;N. Sinev;D. Strom;J. Strube;E. Torrence;G. Castelli;E. Feltresi;N. Gagliardi;M. Margoni;M. Morandin;M. Posocco;M. Rotondo;F. Simonetto;R. Stroili;E. Ben Haim;G. Bonneaud;H. Briand;G. Calderini;J. Chauveau;O. Hamon;P. Leruste;G. Marchiori;J. Ocariz;J. Prendki;S. Sitt;M. Biasini;E. Manoni;A. Rossi;C. Angelini;G. Batignani;S. Bettarini;M. Carpinelli;G. Casarosa;A. Cervelli;F. Forti;M. Giorgi;A. Lusiani;N. Neri;E. Paoloni;G. Rizzo;J. Walsh;D. Lopes Pegna;C. Lu;J. Olsen;A. Smith;A. Telnov;F. Anulli;E. Baracchini;G. Cavoto;R. Faccini;F. Ferrarotto;F. Ferroni;M. Gaspero;L. Li Gioi;M. Mazzoni;G. Piredda;F. Renga;T. Hartmann;T. Leddig;H. Schröder;R. Waldi;T. Adye;B. Franek;E. Olaiya;F. Wilson;S. Emery;G. Hamel de Monchenault;G. Vasseur;C. Yèche;M. Zito;M. Allen;D. Aston;D. Bard;R. Bartoldus;J. Benitez;C. Cartaro;M. Convery;J. Dorfan;G. Dubois Felsmann;W. Dunwoodie;R. Field;M. Franco Sevilla;B. Fulsom;A. Gabareen;M. Graham;P. Grenier;C. Hast;W. Innes;M. Kelsey;H. Kim;P. Kim;M. Kocian;D. Leith;S. Li;B. Lindquist;S. Luitz;V. Luth;H. Lynch;D. MacFarlane;H. Marsiske;D. Muller;H. Neal;S. Nelson;C. O’Grady;I. Ofte;M. Perl;T. Pulliam;B. Ratcliff;A. Roodman;A. Salnikov;V. Santoro;R. Schindler;J. Schwiening;A. Snyder;D. Su;M. Sullivan;S. Sun;K. Suzuki;J. Thompson;J. Va’vra;A. Wagner;M. Weaver;C. West;W. Wisniewski;M. Wittgen;D. Wright;H. Wulsin;A. Yarritu;C. Young;V. Ziegler;X. Chen;W. Park;M. Purohit;R. White;J. Wilson;S. Sekula;M. Bellis;P. Burchat;A. Edwards;T. Miyashita;S. Ahmed;M. Alam;J. Ernst;B. Pan;M. Saeed;S. Zain;N. Guttman;A. Soffer;P. Lund;S. Spanier;R. Eckmann;J. Ritchie;A. Ruland;C. Schilling;R. Schwitters;B. Wray;J. Izen;X. Lou;F. Bianchi;D. Gamba;M. Pelliccioni;M. Bomben;L. Lanceri;L. Vitale;N. Lopez March;F. Martinez Vidal;D. Milanes;A. Oyanguren;J. Albert;S. Banerjee;H. Choi;K. Hamano;G. King;R. Kowalewski;M. Lewczuk;I. Nugent;J. Roney;R. Sobie;T. Gershon;P. Harrison;T. Latham;E. Puccio;H. Band;S. Dasu;K. Flood;Y. Pan;R. Prepost;C. Vuosalo;S. Wu

2011

Abstract

We study the processes γγ→KS0K±π∓ and γγ→K+K-π+π-π0 using a data sample of 519.2fb-1 recorded by the BABAR detector at the PEP-II asymmetric-energy e+e- collider at center-of-mass energies near the Υ(nS) (n=2, 3, 4) resonances. We observe the ηc(1S), χc0(1P) and ηc(2S) resonances produced in two-photon interactions and decaying to K+K-π+π-π0, with significances of 18.1, 5.4 and 5.3 standard deviations (including systematic errors), respectively, and report 4.0σ evidence of the χc2(1P) decay to this final state. We measure the ηc(2S) mass and width in KS0K±π∓ decays, and obtain the values m(ηc(2S))=3638.5±1.5±0.8 MeV/c2 and Γ(ηc(2S))=13.4±4.6±3.2 MeV, where the first uncertainty is statistical and the second is systematic. We measure the two-photon width times branching fraction for the reported resonance signals, and search for the χc2(2P) resonance, but no significant signal is observed.

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	Parole chiave
	
			Fisica a due fotoni ; stati di charmonio in produzione gamma gamma
		
	Settori scientifico-disciplinari dell'articolo
	
			Settore FIS/04 - Fisica Nucleare e Subnucleare
		
	Data di pubblicazione
	
			2011
		
	Rivista in ANCE
	
			PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
		
	DOI
	
			https://dx.doi.org/10.1103/PhysRevD.84.012004
		
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			Article (author)
		
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/164788

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