Study of X(3915)→J/ψω in two-photon collisions

Lees, J.; Poireau, V.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Palano, A.; Eigen, G.; Stugu, B.; Brown, D.; Kerth, L.; Kolomensky, Y.; Lynch, G.; Koch, H.; Schroeder, T.; Asgeirsson, D.; Hearty, C.; Mattison, T.; Mckenna, J.; So, R.; Khan, A.; Blinov, V.; Buzykaev, A.; Druzhinin, V.; Golubev, V.; Kravchenko, E.; Onuchin, A.; Serednyakov, S.; Skovpen, Y.; Solodov, E.; Todyshev, K.; Yushkov, A.; Bondioli, M.; Kirkby, D.; Lankford, A.; Mandelkern, M.; Atmacan, H.; Gary, J.; Liu, F.; Long, O.; Vitug, G.; Campagnari, C.; Hong, T.; Kovalskyi, D.; Richman, J.; West, C.; Eisner, A.; Kroseberg, J.; Lockman, W.; Martinez, A.; Schumm, B.; Seiden, A.; Chao, D.; Cheng, C.; Echenard, B.; Flood, K.; Hitlin, D.; Ongmongkolkul, P.; Porter, F.; Rakitin, A.; Andreassen, R.; Huard, Z.; Meadows, B.; Sokoloff, M.; Sun, L.; Bloom, P.; Ford, W.; Gaz, A.; Nauenberg, U.; Smith, J.; Wagner, S.; Ayad, R.; Toki, W.; Spaan, B.; Schubert, K.; Schwierz, R.; Bernard, D.; Verderi, M.; Clark, P.; Playfer, S.; Bettoni, D.; Bozzi, C.; Calabrese, R.; Cibinetto, G.; Fioravanti, E.; Garzia, I.; Luppi, E.; Munerato, M.; Piemontese, L.; Santoro, V.; Baldini Ferroli, R.; Calcaterra, A.; de Sangro, R.; Finocchiaro, G.; 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.; Bhuyan, B.; Prasad, V.; Lee, C.; Morii, M.; Edwards, A.; Adametz, A.; Uwer, U.; Lacker, H.; Lueck, T.; Dauncey, P.; Mallik, U.; Chen, C.; Cochran, J.; Meyer, W.; Prell, S.; Rubin, A.; Gritsan, A.; Guo, Z.; Arnaud, N.; Davier, M.; Derkach, D.; Grosdidier, G.; Le Diberder, F.; Lutz, A.; Malaescu, B.; Roudeau, P.; Schune, M.; Stocchi, A.; Wormser, G.; Lange, D.; Wright, D.; Chavez, C.; Coleman, J.; Fry, J.; Gabathuler, E.; Hutchcroft, D.; Payne, D.; Touramanis, C.; Bevan, A.; Di Lodovico, F.; Sacco, R.; Sigamani, M.; Cowan, G.; Brown, D.; Davis, C.; Denig, A.; Fritsch, M.; Gradl, W.; Griessinger, K.; Hafner, A.; Prencipe, E.; Barlow, R.; Jackson, G.; Lafferty, G.; Behn, E.; Cenci, R.; Hamilton, B.; Jawahery, A.; Roberts, D.; Dallapiccola, C.; Cowan, R.; Dujmic, D.; Sciolla, G.; Cheaib, R.; Lindemann, D.; Patel, P.; Robertson, S.; Biassoni, P.; Neri, N.; 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.; Martinelli, M.; Raven, G.; Jessop, C.; Losecco, J.; Wang, W.; Honscheid, K.; Kass, R.; Brau, J.; Frey, R.; Sinev, N.; Strom, D.; Torrence, E.; Feltresi, E.; Gagliardi, N.; Margoni, M.; Morandin, M.; Posocco, M.; Rotondo, M.; Simi, G.; Simonetto, F.; Stroili, R.; Akar, S.; Ben Haim, E.; Bomben, M.; Bonneaud, G.; Briand, H.; Calderini, G.; Chauveau, J.; Hamon, O.; Leruste, P.; Marchiori, G.; Ocariz, J.; Sitt, S.; Biasini, M.; Manoni, E.; Pacetti, S.; Rossi, A.; Angelini, C.; Batignani, G.; Bettarini, S.; Carpinelli, M.; Casarosa, G.; Cervelli, A.; Forti, F.; Giorgi, M.; Lusiani, A.; Oberhof, B.; Paoloni, E.; Perez, A.; Rizzo, G.; Walsh, J.; Lopes Pegna, D.; Olsen, J.; Smith, A.; Telnov, A.; Anulli, F.; Faccini, R.; Ferrarotto, F.; Ferroni, F.; Gaspero, M.; Li Gioi, L.; Mazzoni, M.; Piredda, G.; Bünger, C.; Grünberg, O.; Hartmann, T.; Leddig, T.; Voß, C.; Waldi, R.; Adye, T.; Olaiya, E.; Wilson, F.; Emery, S.; Hamel de Monchenault, G.; Vasseur, G.; Yèche, C.; Aston, D.; Bard, D.; Bartoldus, R.; Benitez, J.; Cartaro, C.; Convery, M.; Dorfan, J.; Dubois Felsmann, G.; Dunwoodie, W.; Ebert, M.; Field, R.; Franco Sevilla, M.; Fulsom, B.; Gabareen, A.; Graham, M.; Grenier, P.; Hast, C.; Innes, W.; Kelsey, M.; Kim, P.; Kocian, M.; Leith, D.; Lewis, P.; Lindquist, B.; Luitz, S.; Luth, V.; Lynch, H.; Macfarlane, D.; Muller, D.; Neal, H.; Nelson, S.; Perl, M.; Pulliam, T.; Ratcliff, B.; Roodman, A.; Salnikov, A.; Schindler, R.; Snyder, A.; Su, D.; Sullivan, M.; Va’Vra, J.; Wagner, A.; Wisniewski, W.; Wittgen, M.; Wright, D.; Wulsin, H.; Young, C.; Ziegler, V.; Park, W.; Purohit, M.; White, R.; Wilson, J.; Randle Conde, A.; Sekula, S.; Bellis, M.; Burchat, P.; Miyashita, T.; Puccio, E.; Alam, M.; Ernst, J.; Gorodeisky, R.; Guttman, N.; Peimer, D.; Soffer, A.; Lund, P.; Spanier, S.; Ritchie, J.; Ruland, A.; Schwitters, R.; Wray, B.; Izen, J.; Lou, X.; Bianchi, F.; Gamba, D.; Zambito, S.; Lanceri, L.; Vitale, L.; Martinez Vidal, F.; Oyanguren, A.; Villanueva Perez, P.; Ahmed, H.; Albert, J.; Banerjee, S.; Bernlochner, F.; Choi, H.; King, G.; Kowalewski, R.; Lewczuk, M.; Nugent, I.; Roney, J.; Sobie, R.; Tasneem, N.; Gershon, T.; Harrison, P.; Latham, T.; Band, H.; Dasu, S.; Pan, Y.; Prepost, R.; Wu, S.

doi:10.1103/PhysRevD.86.072002

We study the process γγ→J/ψω using a data sample of 519.2 fb-1 recorded by the BABAR detector at SLAC at the PEP-II asymmetric-energy e+e- collider at center-of-mass energies near the Υ(nS) (n=2,3,4) resonances. We confirm the existence of the charmoniumlike resonance X(3915) decaying to J/ψω with a significance of 7.6 standard deviations, including systematic uncertainties, and measure its mass (3919.4±2.2±1.6) MeV/c2 and width (13±6±3) MeV, where the first uncertainty is statistical and the second systematic. A spin-parity analysis supports the assignment JP=0+ and therefore the identification of the signal as due to the χc0(2P) resonance. In this hypothesis we determine the product between the two-photon width and the final state branching fraction to be (52±10±3) eV.

Study of X(3915)→J/ψω in two-photon collisions / J. Lees, V. Poireau, V. Tisserand, J. Garra Tico, E. Grauges, A. Palano, G. Eigen, B. Stugu, D. Brown, L. Kerth, Y. Kolomensky, G. Lynch, H. Koch, T. Schroeder, D. Asgeirsson, C. Hearty, T. Mattison, J. McKenna, R. So, A. Khan, V. Blinov, A. Buzykaev, V. Druzhinin, V. Golubev, E. Kravchenko, A. Onuchin, S. Serednyakov, Y. Skovpen, E. Solodov, K. Todyshev, A. Yushkov, M. Bondioli, D. Kirkby, A. Lankford, M. Mandelkern, H. Atmacan, J. Gary, F. Liu, O. Long, G. Vitug, C. Campagnari, T. Hong, D. Kovalskyi, J. Richman, C. West, A. Eisner, J. Kroseberg, W. Lockman, A. Martinez, B. Schumm, A. Seiden, D. Chao, C. Cheng, B. Echenard, K. Flood, D. Hitlin, P. Ongmongkolkul, F. Porter, A. Rakitin, R. Andreassen, Z. Huard, B. Meadows, M. Sokoloff, L. Sun, P. Bloom, W. Ford, A. Gaz, U. Nauenberg, J. Smith, S. Wagner, R. Ayad, W. Toki, B. Spaan, K. Schubert, R. Schwierz, D. Bernard, M. Verderi, P. Clark, S. Playfer, D. Bettoni, C. Bozzi, R. Calabrese, G. Cibinetto, E. Fioravanti, I. Garzia, E. Luppi, M. Munerato, L. Piemontese, V. Santoro, R. Baldini-Ferroli, A. Calcaterra, R. de Sangro, G. Finocchiaro, 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, B. Bhuyan, V. Prasad, C. Lee, M. Morii, A. Edwards, A. Adametz, U. Uwer, H. Lacker, T. Lueck, P. Dauncey, U. Mallik, C. Chen, J. Cochran, W. Meyer, S. Prell, A. Rubin, A. Gritsan, Z. Guo, N. Arnaud, M. Davier, D. Derkach, G. Grosdidier, F. Le Diberder, A. Lutz, B. Malaescu, P. Roudeau, M. Schune, A. Stocchi, G. Wormser, D. Lange, D. Wright, C. Chavez, J. Coleman, J. Fry, E. Gabathuler, D. Hutchcroft, D. Payne, C. Touramanis, A. Bevan, F. Di Lodovico, R. Sacco, M. Sigamani, G. Cowan, D. Brown, C. Davis, A. Denig, M. Fritsch, W. Gradl, K. Griessinger, A. Hafner, E. Prencipe, R. Barlow, G. Jackson, G. Lafferty, E. Behn, R. Cenci, B. Hamilton, A. Jawahery, D. Roberts, C. Dallapiccola, R. Cowan, D. Dujmic, G. Sciolla, R. Cheaib, D. Lindemann, P. Patel, S. Robertson, P. Biassoni, N. Neri, 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, M. Martinelli, G. Raven, C. Jessop, J. LoSecco, W. Wang, K. Honscheid, R. Kass, J. Brau, R. Frey, N. Sinev, D. Strom, E. Torrence, E. Feltresi, N. Gagliardi, M. Margoni, M. Morandin, M. Posocco, M. Rotondo, G. Simi, F. Simonetto, R. Stroili, S. Akar, E. Ben-Haim, M. Bomben, G. Bonneaud, H. Briand, G. Calderini, J. Chauveau, O. Hamon, P. Leruste, G. Marchiori, J. Ocariz, S. Sitt, M. Biasini, E. Manoni, S. Pacetti, A. Rossi, C. Angelini, G. Batignani, S. Bettarini, M. Carpinelli, G. Casarosa, A. Cervelli, F. Forti, M. Giorgi, A. Lusiani, B. Oberhof, E. Paoloni, A. Perez, G. Rizzo, J. Walsh, D. Lopes Pegna, J. Olsen, A. Smith, A. Telnov, F. Anulli, R. Faccini, F. Ferrarotto, F. Ferroni, M. Gaspero, L. Li Gioi, M. Mazzoni, G. Piredda, C. Bünger, O. Grünberg, T. Hartmann, T. Leddig, C. Voß, R. Waldi, T. Adye, E. Olaiya, F. Wilson, S. Emery, G. Hamel de Monchenault, G. Vasseur, C. Yèche, D. Aston, D. Bard, R. Bartoldus, J. Benitez, C. Cartaro, M. Convery, J. Dorfan, G. Dubois-Felsmann, W. Dunwoodie, M. Ebert, R. Field, M. Franco Sevilla, B. Fulsom, A. Gabareen, M. Graham, P. Grenier, C. Hast, W. Innes, M. Kelsey, P. Kim, M. Kocian, D. Leith, P. Lewis, B. Lindquist, S. Luitz, V. Luth, H. Lynch, D. MacFarlane, D. Muller, H. Neal, S. Nelson, M. Perl, T. Pulliam, B. Ratcliff, A. Roodman, A. Salnikov, R. Schindler, A. Snyder, D. Su, M. Sullivan, J. Va’vra, A. Wagner, W. Wisniewski, M. Wittgen, D. Wright, H. Wulsin, C. Young, V. Ziegler, W. Park, M. Purohit, R. White, J. Wilson, A. Randle-Conde, S. Sekula, M. Bellis, P. Burchat, T. Miyashita, E. Puccio, M. Alam, J. Ernst, R. Gorodeisky, N. Guttman, D. Peimer, A. Soffer, P. Lund, S. Spanier, J. Ritchie, A. Ruland, R. Schwitters, B. Wray, J. Izen, X. Lou, F. Bianchi, D. Gamba, S. Zambito, L. Lanceri, L. Vitale, F. Martinez-Vidal, A. Oyanguren, P. Villanueva-Perez, H. Ahmed, J. Albert, S. Banerjee, F. Bernlochner, H. Choi, G. King, R. Kowalewski, M. Lewczuk, I. Nugent, J. Roney, R. Sobie, N. Tasneem, T. Gershon, P. Harrison, T. Latham, H. Band, S. Dasu, Y. Pan, R. Prepost, S. Wu. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 86:7(2012), pp. 072002.072002.1-072002.072002.10. [10.1103/PhysRevD.86.072002]

Study of X(3915)→J/ψω in two-photon collisions

J. Lees;V. Poireau;V. Tisserand;J. Garra Tico;E. Grauges;A. Palano;G. Eigen;B. Stugu;D. Brown;L. Kerth;Y. Kolomensky;G. Lynch;H. Koch;T. Schroeder;D. Asgeirsson;C. Hearty;T. Mattison;J. McKenna;R. So;A. Khan;V. Blinov;A. Buzykaev;V. Druzhinin;V. Golubev;E. Kravchenko;A. Onuchin;S. Serednyakov;Y. Skovpen;E. Solodov;K. Todyshev;A. Yushkov;M. Bondioli;D. Kirkby;A. Lankford;M. Mandelkern;H. Atmacan;J. Gary;F. Liu;O. Long;G. Vitug;C. Campagnari;T. Hong;D. Kovalskyi;J. Richman;C. West;A. Eisner;J. Kroseberg;W. Lockman;A. Martinez;B. Schumm;A. Seiden;D. Chao;C. Cheng;B. Echenard;K. Flood;D. Hitlin;P. Ongmongkolkul;F. Porter;A. Rakitin;R. Andreassen;Z. Huard;B. Meadows;M. Sokoloff;L. Sun;P. Bloom;W. Ford;A. Gaz;U. Nauenberg;J. Smith;S. Wagner;R. Ayad;W. Toki;B. Spaan;K. Schubert;R. Schwierz;D. Bernard;M. Verderi;P. Clark;S. Playfer;D. Bettoni;C. Bozzi;R. Calabrese;G. Cibinetto;E. Fioravanti;I. Garzia;E. Luppi;M. Munerato;L. Piemontese;V. Santoro;R. Baldini Ferroli;A. Calcaterra;R. de Sangro;G. Finocchiaro;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;B. Bhuyan;V. Prasad;C. Lee;M. Morii;A. Edwards;A. Adametz;U. Uwer;H. Lacker;T. Lueck;P. Dauncey;U. Mallik;C. Chen;J. Cochran;W. Meyer;S. Prell;A. Rubin;A. Gritsan;Z. Guo;N. Arnaud;M. Davier;D. Derkach;G. Grosdidier;F. Le Diberder;A. Lutz;B. Malaescu;P. Roudeau;M. Schune;A. Stocchi;G. Wormser;D. Lange;D. Wright;C. Chavez;J. Coleman;J. Fry;E. Gabathuler;D. Hutchcroft;D. Payne;C. Touramanis;A. Bevan;F. Di Lodovico;R. Sacco;M. Sigamani;G. Cowan;D. Brown;C. Davis;A. Denig;M. Fritsch;W. Gradl;K. Griessinger;A. Hafner;E. Prencipe;R. Barlow;G. Jackson;G. Lafferty;E. Behn;R. Cenci;B. Hamilton;A. Jawahery;D. Roberts;C. Dallapiccola;R. Cowan;D. Dujmic;G. Sciolla;R. Cheaib;D. Lindemann;P. Patel;S. Robertson;P. Biassoni;N. Neri;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;M. Martinelli;G. Raven;C. Jessop;J. LoSecco;W. Wang;K. Honscheid;R. Kass;J. Brau;R. Frey;N. Sinev;D. Strom;E. Torrence;E. Feltresi;N. Gagliardi;M. Margoni;M. Morandin;M. Posocco;M. Rotondo;G. Simi;F. Simonetto;R. Stroili;S. Akar;E. Ben Haim;M. Bomben;G. Bonneaud;H. Briand;G. Calderini;J. Chauveau;O. Hamon;P. Leruste;G. Marchiori;J. Ocariz;S. Sitt;M. Biasini;E. Manoni;S. Pacetti;A. Rossi;C. Angelini;G. Batignani;S. Bettarini;M. Carpinelli;G. Casarosa;A. Cervelli;F. Forti;M. Giorgi;A. Lusiani;B. Oberhof;E. Paoloni;A. Perez;G. Rizzo;J. Walsh;D. Lopes Pegna;J. Olsen;A. Smith;A. Telnov;F. Anulli;R. Faccini;F. Ferrarotto;F. Ferroni;M. Gaspero;L. Li Gioi;M. Mazzoni;G. Piredda;C. Bünger;O. Grünberg;T. Hartmann;T. Leddig;C. Voß;R. Waldi;T. Adye;E. Olaiya;F. Wilson;S. Emery;G. Hamel de Monchenault;G. Vasseur;C. Yèche;D. Aston;D. Bard;R. Bartoldus;J. Benitez;C. Cartaro;M. Convery;J. Dorfan;G. Dubois Felsmann;W. Dunwoodie;M. Ebert;R. Field;M. Franco Sevilla;B. Fulsom;A. Gabareen;M. Graham;P. Grenier;C. Hast;W. Innes;M. Kelsey;P. Kim;M. Kocian;D. Leith;P. Lewis;B. Lindquist;S. Luitz;V. Luth;H. Lynch;D. MacFarlane;D. Muller;H. Neal;S. Nelson;M. Perl;T. Pulliam;B. Ratcliff;A. Roodman;A. Salnikov;R. Schindler;A. Snyder;D. Su;M. Sullivan;J. Va’vra;A. Wagner;W. Wisniewski;M. Wittgen;D. Wright;H. Wulsin;C. Young;V. Ziegler;W. Park;M. Purohit;R. White;J. Wilson;A. Randle Conde;S. Sekula;M. Bellis;P. Burchat;T. Miyashita;E. Puccio;M. Alam;J. Ernst;R. Gorodeisky;N. Guttman;D. Peimer;A. Soffer;P. Lund;S. Spanier;J. Ritchie;A. Ruland;R. Schwitters;B. Wray;J. Izen;X. Lou;F. Bianchi;D. Gamba;S. Zambito;L. Lanceri;L. Vitale;F. Martinez Vidal;A. Oyanguren;P. Villanueva Perez;H. Ahmed;J. Albert;S. Banerjee;F. Bernlochner;H. Choi;G. King;R. Kowalewski;M. Lewczuk;I. Nugent;J. Roney;R. Sobie;N. Tasneem;T. Gershon;P. Harrison;T. Latham;H. Band;S. Dasu;Y. Pan;R. Prepost;S. Wu

2012

Abstract

We study the process γγ→J/ψω using a data sample of 519.2 fb-1 recorded by the BABAR detector at SLAC at the PEP-II asymmetric-energy e+e- collider at center-of-mass energies near the Υ(nS) (n=2,3,4) resonances. We confirm the existence of the charmoniumlike resonance X(3915) decaying to J/ψω with a significance of 7.6 standard deviations, including systematic uncertainties, and measure its mass (3919.4±2.2±1.6) MeV/c2 and width (13±6±3) MeV, where the first uncertainty is statistical and the second systematic. A spin-parity analysis supports the assignment JP=0+ and therefore the identification of the signal as due to the χc0(2P) resonance. In this hypothesis we determine the product between the two-photon width and the final state branching fraction to be (52±10±3) eV.

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				Settore FIS/04 - Fisica Nucleare e Subnucleare
			
	Data di pubblicazione
	
				2012
			
	Rivista in ANCE
	
				PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
			
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				https://dx.doi.org/10.1103/PhysRevD.86.072002
			
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