The $e^+ e^-\to K^+ K^- \pi^+\pi^-$, $K^+ K^- \pi^0\pi^0$ and $K^+ K^- K^+ K^-$ Cross Sections Measured with Initial-State Radiation

Aubert, B.; Barate, R.; Boutigny, D.; Couderc, F.; Karyotakis, Y.; Lees, J.P.; Poireau, V.; Tisserand, V.; Zghiche, A.; Grauges, E.; Palano, A.; Pappagallo, M.; Pompili, A.; Chen, J.C.; N. D., Q.; Rong, G.; Wang, P.; Zhu, Y.S.; Eigen, G.; Ofte, I.; Stugu, B.; Abrams, G.S.; Battaglia, M.; Best, D.; Breon, A.B.; Brown, D.N.; BUTTON SHAFER, J.; Cahn, R.N.; Charles, E.; Day, C.T.; Gill, M.S.; Gritsan, A.V.; Groysman, Y.; Jacobsen, R.G.; Kadel, R.W.; Kadyk, J.; Kerth, L.T.; Kolomensky, Y.G.; Kukartsev, G.; Lynch, G.; Mir, L.M.; Oddone, P.J.; Orimoto, T.J.; Pripstein, M.; Roe, N.A.; Ronan, M.T.; Wenzel, W.A.; Barrett, M.; Ford, K.E.; Harrison, T.J.; Hart, A.J.; Hawkes, C.M.; Morgan, S.E.; Watson, A.T.; Fritsch, M.; Goetzen, K.; Held, T.; Koch, H.; Lewandowski, B.; Pelizaeus, M.; Peters, K.; Schroeder, T.; Steinke, M.; Boyd, J.T.; Burke, J.P.; Chevalier, N.; Cottingham, W.N.; CUHADAR DONSZELMANN, T.; Fulsom, B.G.; Hearty, C.; Knecht, N.S.; Mattison, T.S.; Mckenna, J.A.; Khan, A.; Kyberd, P.; Saleem, M.; Teodorescu, L.; Blinov, A.E.; Blinov, V.E.; Bukin, A.D.; Druzhinin, V.P.; Golubev, V.B.; Kravchenko, E.A.; Onuchin, A.P.; Serednyakov, S.I.; Skovpen, Y.I.; Solodov, E.P.; Yushkov, A.N.; Bondioli, M.; Bruinsma, M.; Chao, M.; Curry, S.; Eschrich, I.; Kirkby, D.; Lankford, A.J.; Lund, P.; Mandelkern, M.; Mommsen, R.K.; Roethel, W.; Stoker, D.P.; Buchanan, C.; Hartfiel, B.L.; Foulkes, S.D.; Gary, J.W.; Long, O.; Shen, B.C.; Wang, K.; Zhang, L.; DEL RE, D.; Hadavand, H.K.; Hill, E.J.; Macfarlane, D.B.; Paar, H.P.; Rahatlou, S.; Sharma, V.; Berryhill, J.W.; Campagnari, C.; Cunha, A.; Dahmes, B.; Hong, T.M.; Mazur, M.A.; Richman, J.D.; Verkerke, W.; Beck, T.W.; Eisner, A.M.; Flacco, C.J.; Heusch, C.A.; Kroseberg, J.; Lockman, W.S.; Nesom, G.; Schalk, T.; Schumm, B.A.; Seiden, A.; Spradlin, P.; Williams, D.C.; Wilson, M.G.; Albert, J.; Chen, E.; DUBOIS FELSMANN, G.P.; Dvoretskii, A.; Hitlin, D.G.; Minamora, J.S.; Narsky, I.; Piatenko, T.; Porter, F.C.; Ryd, A.; Samuel, A.; Andreassen, R.; Mancinelli, G.; Meadows, B.T.; Sokoloff, M.D.; Blanc, F.; Bloom, P.C.; Chen, S.; Ford, W.T.; Hirschauer, J.F.; Kreisel, A.; Nauenberg, U.; Olivas, A.; Ruddick, W.O.; Smith, J.G.; Ulmer, K.A.; Wagner, S.R.; Zhang, J.; Chen, A.; Eckhart, E.A.; Soffer, A.; Toki, W.H.; Wilson, R.J.; Zeng, Q.; Altenburg, D.; Feltresi, E.; Hauke, A.; Spaan, B.; Brandt, T.; Brose, J.; Dickopp, M.; Klose, V.; Lacker, H.M.; Nogowski, R.; Otto, S.; Petzold, A.; Schubert, J.; Schubert, K.R.; Schwierz, R.; Sundermann, J.E.; Bernard, D.; Bonneaud, G.R.; Grenier, P.; Schrenk, S.; Thiebaux, C.; Vasileiadis, G.; Verderi, M.; Bard, D.J.; Clark, P.J.; Gradl, W.; Muheim, F.; Playfer, S.; Xie, Y.; Andreotti, M.; Bettoni, D.; Bozzi, C.; Calabrese, R.; Cibinetto, G.; Luppi, E.; Negrini, M.; Piemontese, L.; Anulli, F.; BALDINI FERROLI, R.; Calcaterra, A.; DE SANGRO, R.; Finocchiaro, G.; Patteri, P.; Peruzzi, I.M.; Piccolo, M.; Zallo, A.; Buzzo, A.; Capra, R.; Contri, R.; Vetere, M.L.; Macri, M.M.; Monge, M.R.; Passaggio, S.; Patrignani, C.; Robutti, E.; Santroni, A.; Tosi, S.; Brandenburg, G.; Chaisanguanthum, K.S.; Morii, M.; Won, E.; Wu, J.; Dubitzky, R.S.; Langenegger, U.; Marks, J.; Schenk, S.; Uwer, U.; Bhimji, W.; Bowerman, D.A.; Dauncey, P.D.; Egede, U.; Flack, R.L.; Gaillard, J.R.; Nash, J.A.; Nikolich, M.B.; Vazquez, W.P.; Chai, X.; Charles, M.J.; Mader, W.F.; Mallik, U.; Ziegler, V.; Cochran, J.; Crawley, H.B.; Eyges, V.; Meyer, W.T.; Prell, S.; Rosenberg, E.I.; Rubin, A.E.; J. I., Y.; Schott, G.; Arnaud, N.; Davier, M.; Giroux, X.; Grosdidier, G.; Hocker, A.; Diberder, F.L.; Lepeltier, V.; Lutz, A.M.; Oyanguren, A.; Petersen, T.C.; Plaszczynski, S.; Rodier, S.; Roudeau, P.; Schune, M.H.; Stocchi, A.; Wormser, G.; Cheng, C.H.; Lange, D.J.; Simani, M.C.; Wright, D.M.; Bevan, A.J.; Chavez, C.A.; Forster, I.J.; Fry, J.R.; Gabathuler, E.; Gamet, R.; George, K.A.; Hutchcroft, D.E.; Parry, R.J.; Payne, D.J.; Schofield, K.C.; Touramanis, C.; Cormack, C.M.; Lodovico, F.D.; Menges, W.; Sacco, R.; Brown, C.L.; Cowan, G.; Flaecher, H.U.; Green, M.G.; Hopkins, D.A.; Jackson, P.S.; Mcmahon, T.R.; Ricciardi, S.; Salvatore, F.; Brown, D.N.; Davis, C.L.; Allison, J.; Barlow, N.R.; Barlow, R.J.; Edgar, C.L.; Hodgkinson, M.C.; Kelly, M.P.; Lafferty, G.D.; Naisbit, M.T.; Williams, J.C.; Chen, C.; Hulsbergen, W.D.; Jawahery, A.; Kovalskyi, D.; Lae, C.K.; Roberts, D.A.; Simi, G.; Blaylock, G.; Dallapiccola, C.; Hertzbach, S.S.; Kofler, R.; Li, X.; Moore, T.B.; Saremi, S.; Staengle, H.; Willocq, S.Y.; Cowan, R.; Koeneke, K.; Sciolla, G.; Sekula, S.J.; Spitznagel, M.; Taylor, F.; Yamamoto, R.K.; Kim, H.; Patel, P.M.; Robertson, S.H.; Lazzaro, A.; Lombardo, V.; Palombo, F.; Bauer, J.M.; Cremaldi, L.; Eschenburg, V.; Godang, R.; Kroeger, R.; Reidy, J.; Sanders, D.A.; Summers, D.J.; Zhao, H.W.; Brunet, S.; Cote, D.; Taras, P.; Viaud, F.B.; Nicholson, H.; Cavallo, N.; Nardo, G.D.; Fabozzi, F.; Gatto, C.; Lista, L.; Monorchio, D.; Paolucci, P.; Piccolo, D.; Sciacca, C.; Baak, M.; Bulten, H.; Raven, G.; Snoek, H.L.; Wilden, L.; Jessop, C.P.; Losecco, J.M.; Allmendinger, T.; Benelli, G.; Gan, K.K.; Honscheid, K.; Hufnagel, D.; Jackson, P.D.; Kagan, H.; Kass, R.; Pulliam, T.; Rahimi, A.M.; TER ANTONYAN, R.; Wong, Q.K.; Blount, N.L.; Brau, J.; Frey, R.; Igonkina, O.; Lu, M.; Potter, C.T.; Rahmat, R.; Sinev, N.B.; Strom, D.; Strube, J.; Torrence, E.; Galeazzi, F.; Margoni, M.; Morandin, M.; Posocco, M.; Rotondo, M.; Simonetto, F.; Stroili, R.; Voci, C.; Benayoun, M.; Briand, H.; Chauveau, J.; David, P.; Buono, L.D.; DE LA VAISSIERE, C.; Hamon, O.; John, M.J.J.; Leruste, P.; Malcles, J.; Ocariz, J.; Roos, L.; Therin, G.; Behera, P.K.; Gladney, L.; Guo, Q.H.; Panetta, J.; Biasini, M.; Covarelli, R.; Pacetti, S.; Pioppi, M.; Angelini, C.; Batignani, G.; Bettarini, S.; Bucci, F.; Calderini, G.; Carpinelli, M.; Cenci, R.; Forti, F.; Giorgi, M.A.; Lusiani, A.; Marchiori, G.; Morganti, M.; Neri, N.; Paoloni, E.; Rama, M.; Rizzo, G.; Walsh, J.; Haire, M.; Judd, D.; Wagoner, D.E.; Biesiada, J.; Danielson, N.; Elmer, P.; Lau, Y.P.; Lu, C.; Olsen, J.; Smith, A.J.S.; Telnov, A.V.; Bellini, F.; Cavoto, G.; D'Orazio, A.; DI MARCO, E.; Faccini, R.; Ferrarotto, F.; Ferroni, F.; Gaspero, M.; LI GIOI, L.; Mazzoni, M.A.; Morganti, S.; Piredda, G.; Polci, F.; Tehrani, F.S.; Voena, C.; Schroder, H.; Waldi, R.; Adye, T.; DE GROOT, N.; Franek, B.; Gopal, G.P.; Olaiya, E.O.; Wilson, F.F.; Aleksan, R.; Emery, S.; Gaidot, A.; Ganzhur, S.F.; Graziani, G.; DE MONCHENAULT, G.H.; Kozanecki, W.; Legendre, M.; London, G.W.; Mayer, B.; Vasseur, G.; Yeche, C.; Zito, M.; Purohit, M.V.; Weidemann, A.W.; Wilson, J.R.; Yumiceva, F.X.; Abe, T.; Allen, M.T.; Aston, D.; Bartoldus, R.; Berger, N.; Boyarski, A.M.; Buchmueller, O.L.; Claus, R.; Coleman, J.P.; Convery, M.R.; Cristinziani, M.; Dingfelder, J.C.; Dong, D.; Dorfan, J.; Dujmic, D.; Dunwoodie, W.; Fan, S.; Field, R.C.; Glanzman, T.; Gowdy, S.J.; Hadig, T.; Halyo, V.; Hast, C.; Hryn'Ova, T.; Innes, W.R.; Kelsey, M.H.; Kim, P.; Kocian, M.L.; Leith, D.W.G.S.; Libby, J.; Luitz, S.; Luth, V.; Lynch, H.L.; Marsiske, H.; Messner, R.; Muller, D.R.; O'Grady, C.P.; Ozcan, V.E.; Perazzo, A.; Perl, M.; Ratcliff, B.N.; Roodman, A.; Salnikov, A.A.; Schindler, R.H.; Schwiening, J.; Snyder, A.; Stelzer, J.; Su, D.; Sullivan, M.K.; Suzuki, K.; Swain, S.K.; Thompson, J.M.; Va'Vra, J.; VAN BAKEL, N.; Weaver, M.; Weinstein, A.J.R.; Wisniewski, W.J.; Wittgen, M.; Wright, D.H.; Yarritu, A.K.; Yi, K.; Young, C.C.; Burchat, P.R.; Edwards, A.J.; Majewski, S.A.; Petersen, B.A.; Roat, C.; Ahmed, M.; Ahmed, S.; Alam, M.S.; Bula, R.; Ernst, J.A.; Saeed, M.A.; Wappler, F.R.; Zain, S.B.; Bugg, W.; Krishnamurthy, M.; Spanier, S.M.; Eckmann, R.; Ritchie, J.L.; Satpathy, A.; Schwitters, R.F.; Izen, J.M.; Kitayama, I.; Lou, X.C.; Ye, S.; Bianchi, F.; Bona, M.; Gallo, F.; Gamba, D.; Bomben, M.; Bosisio, L.; Cartaro, C.; Cossutti, F.; DELLA RICCA, G.; Dittongo, S.; Grancagnolo, S.; Lanceri, L.; Vitale, L.; Azzolini, V.; MARTINEZ VIDAL, F.; Panvini, R.S.; Banerjee, S.; Bhuyan, B.; Brown, C.M.; Fortin, D.; Hamano, K.; Kowalewski, R.; Roney, J.M.; Sobie, R.J.; Back, J.J.; Harrison, P.F.; Latham, T.E.; Mohanty, G.B.; Band, H.R.; Chen, X.; Cheng, B.; Dasu, S.; Datta, M.; Eichenbaum, A.M.; Flood, K.T.; Graham, M.T.; Hollar, J.J.; Johnson, J.R.; Kutter, P.E.; Li, H.; Liu, R.; Mellado, B.; Mihalyi, A.; Mohapatra, A.K.; Pan, Y.; Pierini, M.; Prepost, R.; Tan, P.; S. L., W.; Yu, Z.; Neal, H.

doi:10.1103/PhysRevD.76.012008

We study the processes $e^+ e^-\to K^+ K^- \pi^+\pi^-\gamma$, $K^+K^-\pi^0\pi^0\gamma$ and $K^+ K^- K^+ K^-\gamma$, where the photon is radiated from the initial state. About 34600, 4400 and 2300 fully reconstructed events, respectively, are selected from 232 \invfb of \babar data. The invariant mass of the hadronic final state defines the effective \epem center-of-mass energy, so that the $K^+ K^- \pi^+\pi^-\gamma$ data can be compared with direct measurements of the $e^+ e^-\to K^+K^- \pipi$ reaction; no direct measurements exist for the $e^+ e^-\to K^+ K^- \pi^0\pi^0$ or $\epem\to K^+ K^- K^+ K^-$ reactions. Studying the structure of these events, we find contributions from a number of intermediate states, and we extract their cross sections where possible. In particular, we isolate the contribution from $e^+ e^-\to\phi(1020) f_{0}(980)$ and study its structure near threshold. In the charmonium region, we observe the $J/\psi$ in all three final states and several intermediate states, as well as the $\psi(2S)$ in some modes, and measure the corresponding branching fractions. We see no signal for the Y(4260) and obtain an upper limit of $\BR_{Y(4260)\to\phi\pi^+\pi^-}\cdot\Gamma^{Y}_{ee}<0.4 \ev$ at 90% C.L.

The $e^+ e^-\to K^+ K^- \pi^+\pi^-$, $K^+ K^- \pi^0\pi^0$ and $K^+ K^- K^+ K^-$ Cross Sections Measured with Initial-State Radiation / B. AUBERT, R. BARATE, D. BOUTIGNY, F. COUDERC, Y. KARYOTAKIS, J.P. LEES, V. POIREAU, V. TISSERAND, A. ZGHICHE, E. GRAUGES, A. PALANO, M. PAPPAGALLO, A. POMPILI, 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. BEST, A.B. BREON, D.N. BROWN, J. BUTTON-SHAFER, R.N. CAHN, E. CHARLES, C.T. DAY, M.S. GILL, A.V. GRITSAN, Y. GROYSMAN, R.G. JACOBSEN, R.W. KADEL, J. KADYK, L.T. KERTH, Y.G. KOLOMENSKY, G. KUKARTSEV, G. LYNCH, L.M. MIR, P.J. ODDONE, T.J. ORIMOTO, M. PRIPSTEIN, N.A. ROE, M.T. RONAN, W.A. WENZEL, M. BARRETT, K.E. FORD, T.J. HARRISON, A.J. HART, C.M. HAWKES, S.E. MORGAN, A.T. WATSON, M. FRITSCH, K. GOETZEN, T. HELD, H. KOCH, B. LEWANDOWSKI, M. PELIZAEUS, K. PETERS, T. SCHROEDER, M. STEINKE, J.T. BOYD, J.P. BURKE, N. CHEVALIER, W.N. COTTINGHAM, T. CUHADAR-DONSZELMANN, B.G. FULSOM, C. HEARTY, N.S. KNECHT, T.S. MATTISON, J.A. MCKENNA, A. KHAN, P. KYBERD, M. SALEEM, L. TEODORESCU, A.E. BLINOV, V.E. BLINOV, A.D. BUKIN, V.P. DRUZHININ, V.B. GOLUBEV, E.A. KRAVCHENKO, A.P. ONUCHIN, S.I. SEREDNYAKOV, Y.I. SKOVPEN, E.P. SOLODOV, A.N. YUSHKOV, 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, C. BUCHANAN, B.L. HARTFIEL, S.D. FOULKES, J.W. GARY, O. LONG, B.C. SHEN, K. WANG, L. ZHANG, D. DEL RE, H.K. HADAVAND, E.J. HILL, D.B. MACFARLANE, H.P. PAAR, S. RAHATLOU, V. SHARMA, J.W. BERRYHILL, C. CAMPAGNARI, A. CUNHA, B. DAHMES, T.M. HONG, M.A. MAZUR, J.D. RICHMAN, W. VERKERKE, 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, G.P. DUBOIS-FELSMANN, A. DVORETSKII, D.G. HITLIN, J.S. MINAMORA, I. NARSKY, T. PIATENKO, F.C. PORTER, A. RYD, A. SAMUEL, R. ANDREASSEN, G. MANCINELLI, B.T. MEADOWS, M.D. SOKOLOFF, F. BLANC, P.C. BLOOM, S. CHEN, W.T. FORD, J.F. HIRSCHAUER, A. KREISEL, 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, Q. ZENG, D. ALTENBURG, E. FELTRESI, A. HAUKE, B. SPAAN, T. BRANDT, J. BROSE, M. DICKOPP, V. KLOSE, H.M. LACKER, R. NOGOWSKI, S. OTTO, A. PETZOLD, J. SCHUBERT, K.R. SCHUBERT, R. SCHWIERZ, J.E. SUNDERMANN, D. BERNARD, G.R. BONNEAUD, P. GRENIER, S. SCHRENK, C. THIEBAUX, G. VASILEIADIS, M. VERDERI, D.J. BARD, P.J. CLARK, W. GRADL, F. MUHEIM, S. PLAYFER, Y. XIE, M. ANDREOTTI, D. BETTONI, C. BOZZI, R. CALABRESE, G. CIBINETTO, E. LUPPI, M. NEGRINI, L. PIEMONTESE, F. ANULLI, R. BALDINI-FERROLI, A. CALCATERRA, R. DE SANGRO, G. FINOCCHIARO, P. PATTERI, I.M. PERUZZI, M. PICCOLO, A. ZALLO, A. BUZZO, R. CAPRA, R. CONTRI, M.L. VETERE, M.M. MACRI, M.R. MONGE, S. PASSAGGIO, C. PATRIGNANI, E. ROBUTTI, A. SANTRONI, S. TOSI, G. BRANDENBURG, K.S. CHAISANGUANTHUM, M. MORII, E. WON, J. WU, R.S. DUBITZKY, U. LANGENEGGER, J. MARKS, S. SCHENK, U. UWER, W. BHIMJI, D.A. BOWERMAN, P.D. DAUNCEY, U. EGEDE, R.L. FLACK, J.R. GAILLARD, J.A. NASH, M.B. NIKOLICH, W.P. VAZQUEZ, X. CHAI, M.J. CHARLES, W.F. MADER, U. MALLIK, V. ZIEGLER, J. COCHRAN, H.B. CRAWLEY, V. EYGES, W.T. MEYER, S. PRELL, E.I. ROSENBERG, A.E. RUBIN, J.I. YI, G. SCHOTT, N. ARNAUD, M. DAVIER, X. GIROUX, G. GROSDIDIER, A. HOCKER, F.L. DIBERDER, V. LEPELTIER, A.M. LUTZ, A. OYANGUREN, T.C. PETERSEN, S. PLASZCZYNSKI, S. RODIER, P. ROUDEAU, M.H. SCHUNE, A. STOCCHI, G. WORMSER, C.H. CHENG, D.J. LANGE, M.C. SIMANI, D.M. WRIGHT, A.J. BEVAN, C.A. CHAVEZ, I.J. FORSTER, J.R. FRY, E. GABATHULER, R. GAMET, K.A. GEORGE, D.E. HUTCHCROFT, R.J. PARRY, D.J. PAYNE, K.C. SCHOFIELD, C. TOURAMANIS, C.M. CORMACK, F.D. LODOVICO, W. MENGES, R. SACCO, C.L. BROWN, G. COWAN, H.U. FLAECHER, M.G. GREEN, D.A. HOPKINS, P.S. JACKSON, T.R. MCMAHON, S. RICCIARDI, F. SALVATORE, D.N. 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NEAL. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 76:1(2007), pp. 012008.012008-1-012008.012008-33. [10.1103/PhysRevD.76.012008]

The $e^+ e^-\to K^+ K^- \pi^+\pi^-$, $K^+ K^- \pi^0\pi^0$ and $K^+ K^- K^+ K^-$ Cross Sections Measured with Initial-State Radiation

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2007

Abstract

We study the processes $e^+ e^-\to K^+ K^- \pi^+\pi^-\gamma$, $K^+K^-\pi^0\pi^0\gamma$ and $K^+ K^- K^+ K^-\gamma$, where the photon is radiated from the initial state. About 34600, 4400 and 2300 fully reconstructed events, respectively, are selected from 232 \invfb of \babar data. The invariant mass of the hadronic final state defines the effective \epem center-of-mass energy, so that the $K^+ K^- \pi^+\pi^-\gamma$ data can be compared with direct measurements of the $e^+ e^-\to K^+K^- \pipi$ reaction; no direct measurements exist for the $e^+ e^-\to K^+ K^- \pi^0\pi^0$ or $\epem\to K^+ K^- K^+ K^-$ reactions. Studying the structure of these events, we find contributions from a number of intermediate states, and we extract their cross sections where possible. In particular, we isolate the contribution from $e^+ e^-\to\phi(1020) f_{0}(980)$ and study its structure near threshold. In the charmonium region, we observe the $J/\psi$ in all three final states and several intermediate states, as well as the $\psi(2S)$ in some modes, and measure the corresponding branching fractions. We see no signal for the Y(4260) and obtain an upper limit of $\BR_{Y(4260)\to\phi\pi^+\pi^-}\cdot\Gamma^{Y}_{ee}<0.4 \ev$ at 90% C.L.

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	Parole chiave
	
			multiparticle productions
		
	Settori scientifico-disciplinari dell'articolo
	
			Settore FIS/01 - Fisica Sperimentale
		
	Data di pubblicazione
	
			2007
		
	Rivista in ANCE
	
			PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
		
	DOI
	
			https://dx.doi.org/10.1103/PhysRevD.76.012008
		
	URL
	
			http://link.aps.org/abstract/PRD/v76/e012008
		
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			01 - Articolo su periodico

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