Evidence of a broad structure at an invariant mass of 4.32 GeV/c2 in the reaction e+e- --> pi+pi-psi(2S) measured at BABAR

B Aubert; R Barate; M Bona; D Boutigny; F Couderc; Y Karyotakis; J P Lees; V Poireau; V Tisserand; A Zghiche; E Grauges; A Palano; J C Chen; N D Qi; G Rong; P Wang; Y S Zhu; G Eigen; I Ofte; B Stugu; G S Abrams; M Battaglia; D N Brown; J Button-Shafer; R N Cahn; E Charles; M S Gill; Y Groysman; R G Jacobsen; J A Kadyk; L T Kerth; Yu G Kolomensky; G Kukartsev; G Lynch; L M Mir; T J Orimoto; M Pripstein; N A Roe; M T Ronan; W A Wenzel; P del Amo Sanchez; M Barrett; K E Ford; T J Harrison; A J Hart; C M Hawkes; S E Morgan; A T Watson; T Held; H Koch; B Lewandowski; M Pelizaeus; K Peters; T Schroeder; M Steinke; J T Boyd; J P Burke; W N Cottingham; D Walker; T Cuhadar-Donszelmann; B G Fulsom; C Hearty; N S Knecht; T S Mattison; J A McKenna; A Khan; P Kyberd; M Saleem; D J Sherwood; L Teodorescu; V E Blinov; A D Bukin; V P Druzhinin; V B Golubev; A P Onuchin; S I Serednyakov; Yu I Skovpen; E P Solodov; K Yu Todyshev; D S Best; M Bondioli; M Bruinsma; M Chao; S Curry; I Eschrich; D Kirkby; A J Lankford; P Lund; M Mandelkern; R K Mommsen; W Roethel; D P Stoker; S Abachi; C Buchanan; S D Foulkes; J W Gary; O Long; B C Shen; K Wang; L Zhang; H K Hadavand; E J Hill; H P Paar; S Rahatlou; V Sharma; J W Berryhill; C Campagnari; A Cunha; B Dahmes; T M Hong; D Kovalskyi; J D Richman; T W Beck; A M Eisner; C J Flacco; C A Heusch; J Kroseberg; W S Lockman; G Nesom; T Schalk; B A Schumm; A Seiden; P Spradlin; D C Williams; M G Wilson; J Albert; E Chen; A Dvoretskii; F Fang; D G Hitlin; I Narsky; T Piatenko; F C Porter; A Ryd; A Samuel; G Mancinelli; B T Meadows; K Mishra; M D Sokoloff; F Blanc; P C Bloom; S Chen; W T Ford; J F Hirschauer; A Kreisel; M Nagel; U Nauenberg; A Olivas; W O Ruddick; J G Smith; K A Ulmer; S R Wagner; J Zhang; A Chen; E A Eckhart; A Soffer; W H Toki; R J Wilson; F Winklmeier; Q Zeng; D D Altenburg; E Feltresi; A Hauke; H Jasper; A Petzold; B Spaan; T Brandt; V Klose; H M Lacker; W F Mader; R Nogowski; J Schubert; K R Schubert; R Schwierz; J E Sundermann; A Volk; D Bernard; G R Bonneaud; P Grenier; E Latour; Ch Thiebaux; M Verderi; P J Clark; W Gradl; F Muheim; S Playfer; A I Robertson; Y Xie; M Andreotti; D Bettoni; C Bozzi; R Calabrese; G Cibinetto; E Luppi; M Negrini; A Petrella; L Piemontese; E Prencipe; F Anulli; R Baldini-Ferroli; A Calcaterra; R de Sangro; G Finocchiaro; S Pacetti; P Patteri; I M Peruzzi; M Piccolo; M Rama; A Zallo; A Buzzo; R Capra; R Contri; M Lo Vetere; M M Macri; M R Monge; S Passaggio; C Patrignani; E Robutti; A Santroni; S Tosi; G Brandenburg; K S Chaisanguanthum; M Morii; J Wu; R S Dubitzky; J Marks; S Schenk; U Uwer; D J Bard; W Bhimji; D A Bowerman; P D Dauncey; U Egede; R L Flack; J A Nash; M B Nikolich; W Panduro Vazquez; P K Behera; X Chai; M J Charles; U Mallik; N T Meyer; V Ziegler; J Cochran; H B Crawley; L Dong; V Eyges; W T Meyer; S Prell; E I Rosenberg; A E Rubin; A V Gritsan; A G Denig; M Fritsch; G Schott; N Arnaud; M Davier; G Grosdidier; A Höcker; F Le Diberder; V Lepeltier; A M Lutz; A Oyanguren; S Pruvot; S Rodier; P Roudeau; M H Schune; A Stocchi; W F Wang; G Wormser; C H Cheng; D J Lange; D M Wright; C A Chavez; I J Forster; J R Fry; E Gabathuler; R Gamet; K A George; D E Hutchcroft; D J Payne; K C Schofield; C Touramanis; A J Bevan; F Di Lodovico; W Menges; R Sacco; G Cowan; H U Flaecher; D A Hopkins; P S Jackson; T R McMahon; S Ricciardi; F Salvatore; A C Wren; D N Brown; C L Davis; J Allison; N R Barlow; R J Barlow; Y M Chia; C L Edgar; G D Lafferty; M T Naisbit; J C Williams; J I Yi; C Chen; W D Hulsbergen; A Jawahery; C K Lae; D A Roberts; G Simi; G Blaylock; C Dallapiccola; S S Hertzbach; X Li; T B Moore; S Saremi; H Staengle; R Cowan; G Sciolla; S J Sekula; M Spitznagel; F Taylor; R K Yamamoto; H Kim; S E McLachlin; P M Patel; S H Robertson; A Lazzaro; V Lombardo; F Palombo; J M Bauer; L Cremaldi; V Eschenburg; R Godang; R Kroeger; D A Sanders; D J Summers; H W Zhao; S Brunet; D Côté; M Simard; P Taras; F B Viaud; H Nicholson; N Cavallo; G De Nardo; F Fabozzi; C Gatto; L Lista; D Monorchio; P Paolucci; D Piccolo; C Sciacca; M Baak; G Raven; H L Snoek; C P Jessop; J M LoSecco; T Allmendinger; G Benelli; K K Gan; K Honscheid; D Hufnagel; P D Jackson; H Kagan; R Kass; A M Rahimi; R Ter-Antonyan; Q K Wong; N L Blount; J Brau; R Frey; O Igonkina; M Lu; R Rahmat; N B Sinev; D Strom; J Strube; E Torrence; A Gaz; M Margoni; M Morandin; A Pompili; M Posocco; M Rotondo; F Simonetto; R Stroili; C Voci; M Benayoun; J Chauveau; H Briand; P David; L Del Buono; Ch de la Vaissière; O Hamon; B L Hartfiel; M J J John; Ph Leruste; J Malclès; J Ocariz; L Roos; G Therin; L Gladney; J Panetta; M Biasini; R Covarelli; C Angelini; G Batignani; S Bettarini; F Bucci; G Calderini; M Carpinelli; R Cenci; F Forti; M A Giorgi; A Lusiani; G Marchiori; M A Mazur; M Morganti; N Neri; G Rizzo; J J Walsh; M Haire; D Judd; D E Wagoner; J Biesiada; N Danielson; P Elmer; Y P Lau; C Lu; J Olsen; A J S Smith; A V Telnov; F Bellini; G Cavoto; A D'Orazio; D del Re; E Di Marco; R Faccini; F Ferrarotto; F Ferroni; M Gaspero; L Li Gioi; M A Mazzoni; S Morganti; G Piredda; F Polci; F Safai Tehrani; C Voena; M Ebert; H Schröder; R Waldi; T Adye; N De Groot; B Franek; E O Olaiya; F F Wilson; R Aleksan; S Emery; A Gaidot; S F Ganzhur; G Hamel de Monchenault; W Kozanecki; M Legendre; G Vasseur; Ch Yèche; M Zito; X R Chen; H Liu; W Park; M V Purohit; J R Wilson; M T Allen; D Aston; R Bartoldus; P Bechtle; N Berger; R Claus; J P Coleman; M R Convery; M Cristinziani; J C Dingfelder; J Dorfan; G P Dubois-Felsmann; D Dujmic; W Dunwoodie; R C Field; T Glanzman; S J Gowdy; M T Graham; V Halyo; C Hast; T Hryn'ova; W R Innes; M H Kelsey; P Kim; D W G S Leith; S Li; S Luitz; V Luth; H L Lynch; D B MacFarlane; H Marsiske; R Messner; D R Muller; C P O'Grady; V E Ozcan; A Perazzo; M Perl; T Pulliam; B N Ratcliff; A Roodman; A A Salnikov; R H Schindler; J Schwiening; A Snyder; J Stelzer; D Su; M K Sullivan; K Suzuki; S K Swain; J M Thompson; J Va'vra; N van Bakel; M Weaver; A J R Weinstein; W J Wisniewski; M Wittgen; D H Wright; A K Yarritu; K Yi; C C Young; P R Burchat; A J Edwards; S A Majewski; B A Petersen; C Roat; L Wilden; S Ahmed; M S Alam; R Bula; J A Ernst; V Jain; B Pan; M A Saeed; F R Wappler; S B Zain; W Bugg; M Krishnamurthy; S M Spanier; R Eckmann; J L Ritchie; A Satpathy; C J Schilling; R F Schwitters; J M Izen; X C Lou; S Ye; F Bianchi; F Gallo; D Gamba; M Bomben; L Bosisio; C Cartaro; F Cossutti; G Della Ricca; S Dittongo; L Lanceri; L Vitale; V Azzolini; F Martinez-Vidal; Sw Banerjee; B Bhuyan; C M Brown; D Fortin; K Hamano; R Kowalewski; I M Nugent; J M Roney; R J Sobie; J J Back; P F Harrison; T E Latham; G B Mohanty; M Pappagallo; H R Band; X Chen; B Cheng; S Dasu; M Datta; K T Flood; J J Hollar; P E Kutter; B Mellado; A Mihalyi; Y Pan; M Pierini; R Prepost; S L Wu; Z Yu; H Neal; BABAR Collaboration

doi:10.1103/PhysRevLett.98.212001

Evidence of a broad structure at an invariant mass of 4.32 GeV/c2 in the reaction e+e- --> pi+pi-psi(2S) measured at BABAR

Phys Rev Lett. 2007 May 25;98(21):212001. doi: 10.1103/PhysRevLett.98.212001. Epub 2007 May 24.

Authors

B Aubert¹, R Barate, M Bona, D Boutigny, F Couderc, Y Karyotakis, J P Lees, V Poireau, V Tisserand, A Zghiche, E Grauges, A Palano, J C Chen, N D Qi, G Rong, P Wang, Y S Zhu, G Eigen, I Ofte, B Stugu, G S Abrams, M Battaglia, D N Brown, J Button-Shafer, R N Cahn, E Charles, M S Gill, Y Groysman, R G Jacobsen, J A Kadyk, L T Kerth, Yu G Kolomensky, G Kukartsev, G Lynch, L M Mir, T J Orimoto, M Pripstein, N A Roe, M T Ronan, W A Wenzel, P del Amo Sanchez, M Barrett, K E Ford, T J Harrison, A J Hart, C M Hawkes, S E Morgan, A T Watson, T Held, H Koch, B Lewandowski, M Pelizaeus, K Peters, T Schroeder, M Steinke, J T Boyd, J P Burke, W N Cottingham, D Walker, T Cuhadar-Donszelmann, B G Fulsom, C Hearty, N S Knecht, T S Mattison, J A McKenna, A Khan, P Kyberd, M Saleem, D J Sherwood, L Teodorescu, V E Blinov, A D Bukin, V P Druzhinin, V B Golubev, A P Onuchin, S I Serednyakov, Yu I Skovpen, E P Solodov, K Yu Todyshev, D S Best, M Bondioli, M Bruinsma, M Chao, S Curry, I Eschrich, D Kirkby, A J Lankford, P Lund, M Mandelkern, R K Mommsen, W Roethel, D P Stoker, S Abachi, C Buchanan, S D Foulkes, J W Gary, O Long, B C Shen, K Wang, L Zhang, H K Hadavand, E J Hill, H P Paar, S Rahatlou, V Sharma, J W Berryhill, C Campagnari, A Cunha, B Dahmes, T M Hong, D Kovalskyi, J D Richman, T W Beck, A M Eisner, C J Flacco, C A Heusch, J Kroseberg, W S Lockman, G Nesom, T Schalk, B A Schumm, A Seiden, P Spradlin, D C Williams, M G Wilson, J Albert, E Chen, A Dvoretskii, F Fang, D G Hitlin, I Narsky, T Piatenko, F C Porter, A Ryd, A Samuel, G Mancinelli, B T Meadows, K Mishra, M D Sokoloff, F Blanc, P C Bloom, S Chen, W T Ford, J F Hirschauer, A Kreisel, M Nagel, U Nauenberg, A Olivas, W O Ruddick, J G Smith, K A Ulmer, S R Wagner, J Zhang, A Chen, E A Eckhart, A Soffer, W H Toki, R J Wilson, F Winklmeier, Q Zeng, D D Altenburg, E Feltresi, A Hauke, H Jasper, A Petzold, B Spaan, T Brandt, V Klose, H M Lacker, W F Mader, R Nogowski, J Schubert, K R Schubert, R Schwierz, J E Sundermann, A Volk, D Bernard, G R Bonneaud, P Grenier, E Latour, Ch Thiebaux, M Verderi, P J Clark, W Gradl, F Muheim, S Playfer, A I Robertson, Y Xie, M Andreotti, D Bettoni, C Bozzi, R Calabrese, G Cibinetto, E Luppi, M Negrini, A Petrella, L Piemontese, E Prencipe, F Anulli, R Baldini-Ferroli, A Calcaterra, R de Sangro, G Finocchiaro, S Pacetti, P Patteri, I M Peruzzi, M Piccolo, M Rama, A Zallo, A Buzzo, R Capra, R Contri, M Lo Vetere, M M Macri, M R Monge, S Passaggio, C Patrignani, E Robutti, A Santroni, S Tosi, G Brandenburg, K S Chaisanguanthum, M Morii, J Wu, R S Dubitzky, J Marks, S Schenk, U Uwer, D J Bard, W Bhimji, D A Bowerman, P D Dauncey, U Egede, R L Flack, J A Nash, M B Nikolich, W Panduro Vazquez, P K Behera, X Chai, M J Charles, U Mallik, N T Meyer, V Ziegler, J Cochran, H B Crawley, L Dong, V Eyges, W T Meyer, S Prell, E I Rosenberg, A E Rubin, A V Gritsan, A G Denig, M Fritsch, G Schott, N Arnaud, M Davier, G Grosdidier, A Höcker, F Le Diberder, V Lepeltier, A M Lutz, A Oyanguren, S Pruvot, S Rodier, P Roudeau, M H Schune, A Stocchi, W F Wang, G Wormser, C H Cheng, D J Lange, D M Wright, C A Chavez, I J Forster, J R Fry, E Gabathuler, R Gamet, K A George, D E Hutchcroft, D J Payne, K C Schofield, C Touramanis, A J Bevan, F Di Lodovico, W Menges, R Sacco, G Cowan, H U Flaecher, D A Hopkins, P S Jackson, T R McMahon, S Ricciardi, F Salvatore, A C Wren, D N Brown, C L Davis, J Allison, N R Barlow, R J Barlow, Y M Chia, C L Edgar, G D Lafferty, M T Naisbit, J C Williams, J I Yi, C Chen, W D Hulsbergen, A Jawahery, C K Lae, D A Roberts, G Simi, G Blaylock, C Dallapiccola, S S Hertzbach, X Li, T B Moore, S Saremi, H Staengle, R Cowan, G Sciolla, S J Sekula, M Spitznagel, F Taylor, R K Yamamoto, H Kim, S E McLachlin, P M Patel, S H Robertson, A Lazzaro, V Lombardo, F Palombo, J M Bauer, L Cremaldi, V Eschenburg, R Godang, R Kroeger, D A Sanders, D J Summers, H W Zhao, S Brunet, D Côté, M Simard, P Taras, F B Viaud, H Nicholson, N Cavallo, G De Nardo, F Fabozzi, C Gatto, L Lista, D Monorchio, P Paolucci, D Piccolo, C Sciacca, M Baak, G Raven, H L Snoek, C P Jessop, J M LoSecco, T Allmendinger, G Benelli, K K Gan, K Honscheid, D Hufnagel, P D Jackson, H Kagan, R Kass, A M Rahimi, R Ter-Antonyan, Q K Wong, N L Blount, J Brau, R Frey, O Igonkina, M Lu, R Rahmat, N B Sinev, D Strom, J Strube, E Torrence, A Gaz, M Margoni, M Morandin, A Pompili, M Posocco, M Rotondo, F Simonetto, R Stroili, C Voci, M Benayoun, J Chauveau, H Briand, P David, L Del Buono, Ch de la Vaissière, O Hamon, B L Hartfiel, M J J John, Ph Leruste, J Malclès, J Ocariz, L Roos, G Therin, L Gladney, J Panetta, M Biasini, R Covarelli, C Angelini, G Batignani, S Bettarini, F Bucci, G Calderini, M Carpinelli, R Cenci, F Forti, M A Giorgi, A Lusiani, G Marchiori, M A Mazur, M Morganti, N Neri, G Rizzo, J J Walsh, M Haire, D Judd, D E Wagoner, J Biesiada, N Danielson, P Elmer, Y P Lau, C Lu, J Olsen, A J S Smith, A V Telnov, F Bellini, G Cavoto, A D'Orazio, D del Re, E Di Marco, R Faccini, F Ferrarotto, F Ferroni, M Gaspero, L Li Gioi, M A Mazzoni, S Morganti, G Piredda, F Polci, F Safai Tehrani, C Voena, M Ebert, H Schröder, R Waldi, T Adye, N De Groot, B Franek, E O Olaiya, F F Wilson, R Aleksan, S Emery, A Gaidot, S F Ganzhur, G Hamel de Monchenault, W Kozanecki, M Legendre, G Vasseur, Ch Yèche, M Zito, X R Chen, H Liu, W Park, M V Purohit, J R Wilson, M T Allen, D Aston, R Bartoldus, P Bechtle, N Berger, R Claus, J P Coleman, M R Convery, M Cristinziani, J C Dingfelder, J Dorfan, G P Dubois-Felsmann, D Dujmic, W Dunwoodie, R C Field, T Glanzman, S J Gowdy, M T Graham, V Halyo, C Hast, T Hryn'ova, W R Innes, M H Kelsey, P Kim, D W G S Leith, S Li, S Luitz, V Luth, H L Lynch, D B MacFarlane, H Marsiske, R Messner, D R Muller, C P O'Grady, V E Ozcan, A Perazzo, M Perl, T Pulliam, B N Ratcliff, A Roodman, A A Salnikov, R H Schindler, J Schwiening, A Snyder, J Stelzer, D Su, M K Sullivan, K Suzuki, S K Swain, J M Thompson, J Va'vra, N van Bakel, M Weaver, A J R Weinstein, W J Wisniewski, M Wittgen, D H Wright, A K Yarritu, K Yi, C C Young, P R Burchat, A J Edwards, S A Majewski, B A Petersen, C Roat, L Wilden, S Ahmed, M S Alam, R Bula, J A Ernst, V Jain, B Pan, M A Saeed, F R Wappler, S B Zain, W Bugg, M Krishnamurthy, S M Spanier, R Eckmann, J L Ritchie, A Satpathy, C J Schilling, R F Schwitters, J M Izen, X C Lou, S Ye, F Bianchi, F Gallo, D Gamba, M Bomben, L Bosisio, C Cartaro, F Cossutti, G Della Ricca, S Dittongo, L Lanceri, L Vitale, V Azzolini, F Martinez-Vidal, Sw Banerjee, B Bhuyan, C M Brown, D Fortin, K Hamano, R Kowalewski, I M Nugent, J M Roney, R J Sobie, J J Back, P F Harrison, T E Latham, G B Mohanty, M Pappagallo, H R Band, X Chen, B Cheng, S Dasu, M Datta, K T Flood, J J Hollar, P E Kutter, B Mellado, A Mihalyi, Y Pan, M Pierini, R Prepost, S L Wu, Z Yu, H Neal; BABAR Collaboration

Affiliation

¹ Laboratoire de Physique des Particules, F-74941 Annecy-le-Vieux, France.

PMID: 17677767
DOI: 10.1103/PhysRevLett.98.212001

Abstract

We present a measurement of the cross section of the process e(+)e(-)-->pi(+)pi(-)psi(2S) from threshold up to 8 GeV center-of-mass energy using events containing initial-state radiation, produced at the SLAC PEP-II e(+)e(-) storage rings. The study is based on 298 fb(-1) of data recorded with the BABAR detector. A structure is observed in the cross section not far above threshold, near 4.32 GeV. We also investigate the compatibility of this structure with the Y(4260) previously reported by this experiment.