We study the e+e- --> Lambda anti-Lambda gamma, Lambda anti-Sigma0 gamma, Sigma0 anti-Sigma0 gamma processes using 230 fb-1 of integrated luminosity collected by the BABAR detector at e+e- center-of-mass energy of 10.58 GeV. From the analysis of the baryon-antibaryon mass spectra the cross sections for e+e- --> Lambda anti-Lambda, Lambda anti-Sigma0, Sigma0 anti-Sigma0 are measured in the dibaryon mass range from threshold up to 3 GeV/c^2. The ratio of electric and magnetic form factors, |G_E/G_M|, is measured for e+e- --> Lambda anti-Lambda, and limits on the relative phase between Lambda form factors are obtained. We also measure the J/psi --> Lambda anti-Lambda, Sigma0 anti-Sigma0 and psi(2S) --> Lambda anti-Lambda branching fractions.

Study of e+e- --> Lambda anti-Lambda, Lambda anti-Sigma0, Sigma0 anti-Sigma0 using Initial State Radiation with BABAR / 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. BROWN, C.L. DAVIS, J. ALLISON, N.R. BARLOW, R.J. BARLOW, C.L. EDGAR, M.C. HODGKINSON, M.P. KELLY, G.D. LAFFERTY, M.T. NAISBIT, J.C. WILLIAMS, C. CHEN, W.D. HULSBERGEN, A. JAWAHERY, D. KOVALSKYI, C.K. LAE, D.A. ROBERTS, G. SIMI, G. BLAYLOCK, C. DALLAPICCOLA, S.S. HERTZBACH, R. KOFLER, X. LI, T.B.MOORE, S. SAREMI, H. STAENGLE, S.Y. WILLOCQ, R. COWAN, K. KOENEKE, G. SCIOLLA, S.J. SEKULA, M. SPITZNAGEL, F. TAYLOR, R.K. YAMAMOTO, H. KIM, P.M. PATEL, S.H. ROBERTSON, A. LAZZARO, V. LOMBARDO, F. PALOMBO, J.M. BAUER, L. CREMALDI, V. ESCHENBURG, R. GODANG, R. KROEGER, J. REIDY, D.A. SANDERS, D.J. SUMMERS, H.W. ZHAO, S. BRUNET, D. COTE, P. TARAS, F.B. VIAUD, H. NICHOLSON, N. CAVALLO, G.D. NARDO, F. FABOZZI, C. GATTO, L. LISTA, D. MONORCHIO, P. PAOLUCCI, D. PICCOLO, C. SCIACCA, M. BAAK, H. BULTEN, G. RAVEN, H.L. SNOEK, L. WILDEN, C.P. JESSOP, J.M. LOSECCO, T. ALLMENDINGER, G. BENELLI, K.K. GAN, K. HONSCHEID, D. HUFNAGEL, P.D. JACKSON, H. KAGAN, R. KASS, T. PULLIAM, A.M. RAHIMI, R. TER-ANTONYAN, Q.K. WONG, N.L. BLOUNT, J. BRAU, R. FREY, O. IGONKINA, M. LU, C.T. POTTER, R. RAHMAT, N.B. SINEV, D. STROM, J. STRUBE, E. TORRENCE, F. GALEAZZI, M. MARGONI, M. MORANDIN, M. POSOCCO, M. ROTONDO, F. SIMONETTO, R. STROILI, C. VOCI, M. BENAYOUN, H. BRIAND, J. CHAUVEAU, P. DAVID, L.D. BUONO, C. DE LA VAISSIERE, O. HAMON, M.J.J. JOHN, P. LERUSTE, J. MALCLES, J. OCARIZ, L. ROOS, G. THERIN, P.K. BEHERA, L. GLADNEY, Q.H. GUO, J. PANETTA, M. BIASINI, R. COVARELLI, S. PACETTI, M. PIOPPI, C. ANGELINI, G. BATIGNANI, S. BETTARINI, F. BUCCI, G. CALDERINI, M. CARPINELLI, R. CENCI, F. FORTI, M.A. GIORGI, A. LUSIANI, G. MARCHIORI, M. MORGANTI, N. NERI, E. PAOLONI, M. RAMA, G. RIZZO, 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, E. DI MARCO, R. FACCINI, F. FERRAROTTO, F. FERRONI, M. GASPERO, L. LI GIOI, M.A. MAZZONI, S. MORGANTI, G. PIREDDA, F. POLCI, F.S. TEHRANI, C. VOENA, H. SCHRODER, R. WALDI, T. ADYE, N. DE GROOT, B. FRANEK, G.P. GOPAL, E.O. OLAIYA, F.F. WILSON, R. ALEKSAN, S. EMERY, A. GAIDOT, S.F. GANZHUR, G. GRAZIANI, G.H. DE MONCHENAULT, W. KOZANECKI, M. LEGENDRE, G.W. LONDON, B. MAYER, G. VASSEUR, C. YECHE, M. ZITO, M.V. PUROHIT, A.W. WEIDEMANN, J.R. WILSON, F.X. YUMICEVA, T. ABE, M.T. ALLEN, D. ASTON, R. BARTOLDUS, N. BERGER, A.M. BOYARSKI, O.L. BUCHMUELLER, R. CLAUS, J.P. COLEMAN, M.R. CONVERY, M. CRISTINZIANI, J.C. DINGFELDER, D. DONG, J. DORFAN, D. DUJMIC, W. DUNWOODIE, S. FAN, R.C. FIELD, T. GLANZMAN, S.J. GOWDY, T. HADIG, V. HALYO, C. HAST, T. HRYN'OVA, W.R. INNES, M.H. KELSEY, P. KIM, M.L. KOCIAN, D.W.G.S. LEITH, J. LIBBY, S. LUITZ, V. LUTH, H.L. LYNCH, H. MARSISKE, R. MESSNER, D.R. MULLER, C.P. O'GRADY, V.E. OZCAN, A. PERAZZO, M. PERL, 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, M. AHMED, S. AHMED, M.S. ALAM, R. BULA, J.A. ERNST, M.A. SAEED, F.R. WAPPLER, S.B. ZAIN, W. BUGG, M. KRISHNAMURTHY, S.M. SPANIER, R. ECKMANN, J.L. RITCHIE, A. SATPATHY, R.F. SCHWITTERS, J.M. IZEN, I. KITAYAMA, X.C. LOU, S. YE, F. BIANCHI, M. BONA, F. GALLO, D. GAMBA, M. BOMBEN, L. BOSISIO, C. CARTARO, F. COSSUTTI, G. DELLA RICCA, S. DITTONGO, S. GRANCAGNOLO, L. LANCERI, L. VITALE, V. AZZOLINI, F. MARTINEZ-VIDAL, R.S. PANVINI, S. BANERJEE, B. BHUYAN, C.M. BROWN, D. FORTIN, K. HAMANO, R. KOWALEWSKI, J.M. RONEY, R.J. SOBIE, J.J. BACK, P.F. HARRISON, T.E. LATHAM, G.B. MOHANTY, H.R. BAND, X. CHEN, B. CHENG, S. DASU, M. DATTA, A.M. EICHENBAUM, K.T. FLOOD, M.T. GRAHAM, J.J. HOLLAR, J.R. JOHNSON, P.E. KUTTER, H. LI, R. LIU, B. MELLADO, A. MIHALYI, A.K. MOHAPATRA, Y. PAN, M. PIERINI, R. PREPOST, P. TAN, S.L. WU, Z. YU, H. NEAL. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 76:9(2007), pp. 092006.092006-1-092006.092006-23.

Study of e+e- --> Lambda anti-Lambda, Lambda anti-Sigma0, Sigma0 anti-Sigma0 using Initial State Radiation with BABAR

A. LAZZARO;V. LOMBARDO;F. PALOMBO;N. NERI;
2007

Abstract

We study the e+e- --> Lambda anti-Lambda gamma, Lambda anti-Sigma0 gamma, Sigma0 anti-Sigma0 gamma processes using 230 fb-1 of integrated luminosity collected by the BABAR detector at e+e- center-of-mass energy of 10.58 GeV. From the analysis of the baryon-antibaryon mass spectra the cross sections for e+e- --> Lambda anti-Lambda, Lambda anti-Sigma0, Sigma0 anti-Sigma0 are measured in the dibaryon mass range from threshold up to 3 GeV/c^2. The ratio of electric and magnetic form factors, |G_E/G_M|, is measured for e+e- --> Lambda anti-Lambda, and limits on the relative phase between Lambda form factors are obtained. We also measure the J/psi --> Lambda anti-Lambda, Sigma0 anti-Sigma0 and psi(2S) --> Lambda anti-Lambda branching fractions.
baryon spectroscopy
Settore FIS/01 - Fisica Sperimentale
2007
http://link.aps.org/abstract/PRD/v76/e092006
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/39521
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