Observation of Upsilon(4S) decays to pi(+)pi(-)Upsilon(1S) and pi(+)pi(-)Upsilon(2S)

Autor:	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., C. Chen, J., D. Qi, N., Rong, G., Wang, P., S. Zhu, Y., Eigen, G., Ofte, I., Stugu, B., S. Abrams, G., Battaglia, M., B. Breon, A., N. Brown, D., Button-Shafer, J., N. Cahn, R., Charles, E., T. Day, C., S. Gill, M., V. Gritsan, A., Groysman, Y., G. Jacobsen, R., W. Kadel, R., Kadyk, J., T. Kerth, L., G. Kolomensky, Yu., Kukartsev, G., Lynch, G., M. Mir, L., J. Oddone, P., J. Orimoto, T., Pripstein, M., Roe, N.A., T. Ronan, M., Wenzel, W.A., Barrett, M., E. Ford, K., J. Harrison, T., J. Hart, A., M. Hawkes, C., E. Morgan, S., T. Watson, A., Fritsch, M., Goetzen, K., Held, T., Koch, H., Lewandowski, B., Pelizaeus, M., Peters, K., Schroeder, T., Steinke, M., T. Boyd, J., P. Burke, J., Chevalier, N., N. Cottingham, W., Cuhadar-Donszelmann, T., G. Fulsom, B., Hearty, C., S. Knecht, N., S. Mattison, T., A. Mckenna, J., Khan, A., Kyberd, P., Saleem, M., Teodorescu, L., E. Blinov, A., E. Blinov, V., D. Bukin, A., P. Druzhinin, V., B. Golubev, V., A. Kravchenko, E., P. Onuchin, A., I. Serednyakov, S., I. Skovpen, Yu., P. Solodov, E., N. Yushkov, A., Best, D., Bondioli, M., Bruinsma, M., Chao, M., Curry, S., Eschrich, I., Kirkby, D., J. Lankford, A., Lund, P., Mandelkern, M., K. Mommsen, R., Roethel, W., P. Stoker, D., Buchanan, C., L. Hartfiel, B., J. R. Weinstein, A., D. Foulkes, S., W. Gary, J., Long, O., C. Shen, B., Wang, K., Zhang, L., del Re, D., K. Hadavand, H., J. Hill, E., B. Macfarlane, D., P. Paar, H., Rahatlou, S., Sharma, V., W. Berryhill, J., Campagnari, C., Cunha, A., Dahmes, B., M. Hong, T., A. Mazur, M., D. Richman, J., Verkerke, W., W. Beck, T., M. Eisner, A., J. Flacco, C., Heusch, C.A., Kroseberg, J., S. Lockman, W., Nesom, G., Schalk, T., A. Schumm, B., Seiden, A., Spradlin, P., C. Williams, D., G. Wilson, M., Albert, J., Chen, E., P. Dubois-Felsmann, G., Dvoretskii, A., G. Hitlin, D., Narsky, I., Piatenko, T., C. Porter, F., Ryd, A., Samuel, A., Andreassen, R., Jayatilleke, S., Mancinelli, G., T. Meadows, B., D. Sokoloff, M., Blanc, F., Bloom, P., Chen, Si, T. Ford, W., F. Hirschauer, J., Kreisel, A., Nauenberg, U., Olivas, A., Rankin, P., O. Ruddick, W., G. Smith, J., A. Ulmer, K., R. Wagner, S., Zhang, J., Chen, A., A. Eckhart, E., L. Harton, J., Soffer, A., H. Toki, W., J. Wilson, R., Zeng, Q., Altenburg, D., Feltresi, E., Hauke, A., Spaan, B., Brandt, T., Brose, J., Dickopp, M., Klose, V., M. Lacker, H., Nogowski, R., Otto, S., Petzold, A., Schott, G., Schubert, J., R. Schubert, K., Schwierz, R., E. Sundermann, J., Bernard, D., Bonneaud, G.R., Grenier, P., Latour, E., Thiebaux, C., Verderi, M., J. Bard, D., J. Clark, P., Gradl, W., Muheim, F., Playfer, S., Xie, Y., Andreotti, M., Azzolini, V., 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., M. Peruzzi, I., Piccolo, M., Zallo, A., Buzzo, A., Capra, R., Contri, R., Lo Vetere, M., Macri, M., R. Monge, M., Passaggio, S., Patrignani, C., Robutti, E., Santroni, A., Tosi, S., Brandenburg, G., S. Chaisanguanthum, K., Morii, M., Won, E., Wu, J., S. Dubitzky, R., Langenegger, U., Marks, J., Schenk, S., Uwer, U., Bhimji, W., Bowerman, D.A., D. Dauncey, P., Egede, U., L. Flack, R., R. Gaillard, J., W. Morton, G., A. Nash, J., B. Nikolich, M., P. Taylor, G., P. Vazquez, W., J. Charles, M., F. Mader, W., Mallik, U., K. Mohapatra, A., Cochran, J., B. Crawley, H., Eyges, V., T. Meyer, W., Prell, S., I. Rosenberg, E., E. Rubin, A., Yi, J., Arnaud, N., Davier, M., Grosdidier, G., Hocker, A., Le Diberder, F., Lepeltier, V., Lutz, A.M., Oyanguren, A., Pruvot, S., Rodier, S., Roudeau, P., Schune, M.H., Stocchi, A., Wang, W.F., Wormser, G., H. Cheng, C., J. Lange, D., C. Simani, M., M. Wright, D., J. Bevan, A., Chavez, C.A., J. Forster, I., R. Fry, J., Gabathuler, E., Gamet, R., A. George, K., E. Hutchcroft, D., J. Parry, R., J. Payne, D., C. Schofield, K., Touramanis, C., M. Cormack, C., Di Lodovico, F., Menges, W., Sacco, R., L. Brown, C., Cowan, G., U. Flaecher, H., G. Green, M., Hopkins, D.A., S. Jackson, P., R. Mcmahon, T., Ricciardi, S., Salvatore, F., Brown, D., L. Davis, C., Allison, J., R. Barlow, N., J. Barlow, R., L. Edgar, C., C. Hodgkinson, M., P. Kelly, M., D. Lafferty, G., T. Naisbit, M., C. Williams, J., Chen, C., D. Hulsbergen, W., Jawahery, A., Kovalskyi, D., K. Lae, C., Roberts, D.A., Simi, G., Blaylock, G., Dallapiccola, C., Hertzbach, S.S., Kofler, R., B. Koptchev, V., Li, Xiaojian, B. Moore, T., Saremi, S., Staengle, H., Willocq, S., Cowan, R., Koeneke, K., Sciolla, G., J. Sekula, S., Spitznagel, M., Taylor, F., K. Yamamoto, R., Kim, H., M. Patel, P., H. Robertson, S., Lazzaro, A., Lombardo, V., Palombo, F., M. Bauer, J., Cremaldi, L., Eschenburg, V., Godang, R., Kroeger, R., Reidy, J., Sanders, D.A., J. Summers, D., W. Zhao, H., Brunet, S., Cote, D., Taras, P., Viaud, B., Nicholson, H., Cavallo, N., de Nardo, G., Fabozzi, F., Gatto, C., Lista, L., Monorchio, D., Paolucci, P., Piccolo, D., Sciacca, C., Baak, M., Bulten, H., Raven, G., L. Snoek, H., Wilden, L., P. Jessop, C., M. Losecco, J., Allmendinger, T., Benelli, G., K. Gan, K., Honscheid, K., Hufnagel, D., D. Jackson, P., Kagan, H., Kass, R., Pulliam, T., M. Rahimi, A., Ter-Antonyan, R., K. Wong, Q., Brau, J., Frey, R., Igonkina, O., Lu, M., T. Potter, C., B. Sinev, N., Strom, D., Strube, J., Torrence, E., Galeazzi, F., Margoni, M., Morandin, M., Posocco, M., Rotondo, M., Simonetto, F., Stroili, R., Voci, C., Benayoun, M., Chauveau, J., David, P., del Buono, L., de La Vaissiere, C., Hamon, O., Hartfiel, B.L., John, M.J.J., Malcles, J., Ocariz, J., Roos, L., Therin, G., K. Behera, P., Gladney, L., H. Guo, Q., 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., A. Giorgi, M., Lusiani, A., Marchiori, G., Morganti, M., Neri, N., Paoloni, E., Rama, M., Rizzo, G., Walsh, J., Haire, M., Judd, D., E. Wagoner, D., Biesiada, J., Danielson, N., Elmer, P., P. Lau, Y., Lu, C., Olsen, J., J. S. Smith, A., V. Telnov, A., Bellini, F., Cavoto, G., d'Orazio, A., Di Marco, E., Faccini, R., Ferrarotto, F., Ferroni, F., Gaspero, M., Li Gioi, L., A. Mazzoni, M., Morganti, S., Piredda, G., Polci, F., Safai Tehrani, F., Voena, C., Schroder, H., Wagner, G., Waldi, R., Adye, T., de Groot, N., Franek, B., P. Gopal, G., O. Olaiya, E., F. Wilson, F., Aleksan, R., Emery, S., Gaidot, A., F. Ganzhur, S., Hamel de Monchenault, G., Kozanecki, W., Legendre, M., Vasseur, G., Yeche, C., Zito, M., V. Purohit, M., W. Weidemann, A., R. Wilson, J., X. Yumiceva, F., Abe, T., T. Allen, M., Aston, D., van Bakel, N., Bartoldus, R., Berger, N., M. Boyarski, A., L. Buchmueller, O., Claus, R., P. Coleman, J., R. Convery, M., Cristinziani, M., C. Dingfelder, J., Dong, D., Dorfan, J., Dujmic, D., Dunwoodie, W., Fan, S., C. Field, R., Glanzman, T., J. Gowdy, S., Hadig, T., Halyo, V., Hast, C., Hrynova, T., R. Innes, W., H. Kelsey, M., Kim, P., L. Kocian, M., W. G. S. Leith, D., Libby, J., Luitz, S., Luth, V., L. Lynch, H., Marsiske, H., Messner, R., R. Muller, D., P. O'Grady, C., E. Ozcan, V., Perazzo, A., Perl, M., N. Ratcliff, B., Roodman, A., A. Salnikov, A., H. Schindler, R., Schwiening, J., Snyder, A., Stelzer, J., Su, D., K. Sullivan, M., Suzuki, K., Swain, S., M. Thompson, J., Va'Vra, J., Weaver, M., J. Wisniewski, W., Wittgen, M., H. Wright, D., K. Yarritu, A., Yi, K., C. Young, C., R. Burchat, P., J. Edwards, A., Majewski, S.A., A. Petersen, B., Roat, C., Ahmed, M., Ahmed, Mohamed-Salem, S. Alam, M., A. Ernst, J., A. Saeed, M., R. Wappler, F., B. Zain, S., Bugg, W., Krishnamurthy, M., M. Spanier, S., Eckmann, R., L. Ritchie, J., Satpathy, A., F. Schwitters, R., M. Izen, J., Kitayama, I., C. Lou, X., 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., Martinez-Vidal, F., S. Panvini, R., Banerjee, Sw., Bhuyan, B., M. Brown, C., Fortin, D., Hamano, K., Kowalewski, R., M. Roney, J., J. Sobie, R., Back, J.J., F. Harrison, P., E. Latham, T., B. Mohanty, G., R. Band, H., Chen, X., Cheng, B., Dasu, S., Datta, M., M. Eichenbaum, A., T. Flood, K., Graham, M., Hollar, J.J., R. Johnson, J., E. Kutter, P., Li, H., Liu, R., Mellado, B., Mihalyi, A., Pan, Y., Prepost, R., Tan, P., H. von Wimmersperg-Toeller, J., L. Wu, S., Yu, Z., Neal, H.
Přispěvatelé:	Aubert, B, Barate, R, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, Jp, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Chen, Jc, Qi, Nd, Rong, G, Wang, P, Zhu, Y, Eigen, G, Ofte, I, Stugu, B, Abrams, G, Battaglia, M, Brown, Dn, BUTTON-SHAFER, J, Cahn, Rn, Charles, E, Gill, M, Groysman, Y, Jacobsen, Rg, Kadyk, Ja, Kerth, Lt, Kolomensky, Yg, Kukartsev, G, Lynch, G, Mir, Lm, Oddone, Pj, Orimoto, Tj, Pripstein, M, Roe, Na, Ronan, Mt, Wenzel, Wa, Barrett, M, Ford, Ke, Harrison, Tj, Hart, Aj, Hawkes, Cm, Morgan, Se, Watson, At, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, Jt, Burke, Jp, Cottingham, Wn, Walker, D, CUHADAR-DONSZELMANN, T, Fulsom, Bg, Hearty, C, Knecht, N, Mattison, T, Mckenna, Ja, Khan, A, Kyberd, P, Saleem, M, Teodorescu, L, Blinov, Ve, Bukin, Ad, Druzhinin, Vp, Golubev, Vb, Onuchin, Ap, Serednyakov, Si, Skovpen, Yi, Solodov, Ep, Todyshev, Ky, Best, D, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, Aj, Lund, P, Mandelkern, M, Mommsen, Rk, Roethel, W, Stoker, Dp, Abachi, S, Buchanan, C, Foulkes, Sd, Gary, Jw, Long, O, Shen, Bc, Wang, K, Zhang, L, Hadavand, Hk, Hill, Ej, Paar, Hp, Rahatlou, S, Sharma, V, Berryhill, Jw, Campagnari, C, Cunha, A, Dahmes, B, Hong, Tm, Kovalskyi, D, Richman, Jd, Beck, Tw, Eisner, Am, Flacco, Cj, Heusch, Ca, Kroseberg, J, Lockman, W, Nesom, G, Schalk, T, Schumm, Ba, Seiden, A, Spradlin, P, Williams, Dc, Wilson, Mg, Albert, J, Chen, E, Dvoretskii, A, Hitlin, Dg, Narsky, I, Piatenko, T, Porter, Fc, Ryd, A, Samuel, A, Andreassen, R, Mancinelli, G, Meadows, Bt, Sokoloff, Md, Blanc, F, Bloom, Pc, Chen, S, Ford, Wt, Hirschauer, Jf, Kreisel, A, Nauenberg, U, Olivas, A, Ruddick, Wo, Smith, Jg, Ulmer, Ka, Wagner, Sr, Zhang, J, Chen, A, Eckhart, Ea, Soffer, A, Toki, Wh, Wilson, Rj, Winklmeier, F, Zeng, Q, Altenburg, Dd, Feltresi, E, Hauke, A, Jasper, H, Spaan, B, Brandt, T, Klose, V, Lacker, Hm, Mader, Wf, Nogowski, R, Petzold, A, Schubert, J, Schubert, Kr, Schwierz, R, Sundermann, Je, Volk, A, Bernard, D, Bonneaud, Gr, Grenier, P, Latour, E, Thiebaux, C, Verderi, M, Bard, Dj, Clark, Pj, Gradl, W, Muheim, F, Playfer, S, Robertson, Ai, Xie, Y, Andreotti, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Luppi, E, Negrini, M, Petrella, A, Piemontese, L, Prencipe, E, Anulli, F, BALDINI-FERROLI, R, Calcaterra, A, DE SANGRO, R, Finocchiaro, G, Pacetti, S, Patteri, P, Peruzzi, Im, Piccolo, M, Rama, M, Zallo, A, Buzzo, A, Capra, R, Contri, R, LO VETERE, M, Macri, Mm, Monge, Mr, Passaggio, S, Patrignani, C, Robutti, E, Santroni, A, Tosi, S, Brandenburg, G, Chaisanguanthum, K, Morii, M, Wu, J, Dubitzky, R, Marks, J, Schenk, S, Uwer, U, Bhimji, W, Bowerman, Da, Dauncey, Pd, Egede, U, Flack, Rl, Gaillard, Jr, Nash, Ja, Nikolich, Mb, Vazquez, Wp, Chai, X, Charles, Mj, Mallik, U, Meyer, Nt, Ziegler, V, Cochran, J, Crawley, Hb, Dong, L, Eyges, V, Meyer, Wt, Prell, S, Rosenberg, Ei, Rubin, Ae, Gritsan, Av, Fritsch, M, Schott, G, Arnaud, N, Davier, M, Grosdidier, G, Hocker, A, LE DIBERDER, F, Lepeltier, V, Lutz, Am, Oyanguren, A, Pruvot, S, Rodier, S, Roudeau, P, Schune, Mh, Stocchi, A, Wang, Wf, Wormser, G, Cheng, Ch, Lange, Dj, Wright, Dm, Chavez, Ca, Forster, Ij, Fry, Jr, Gabathuler, E, Gamet, R, George, Ka, Hutchcroft, De, Payne, Dj, Schofield, Kc, Touramanis, C, Bevan, Aj, DI LODOVICO, F, Menges, W, Sacco, R, Brown, Cl, Cowan, G, Flaecher, Hu, Hopkins, Da, Jackson, P, Mcmahon, Tr, Ricciardi, S, Salvatore, F, Davis, Cl, Allison, J, Barlow, Nr, Barlow, Rj, Chia, Ym, Edgar, Cl, Kelly, Mp, Lafferty, Gd, Naisbit, Mt, Williams, Jc, Yi, Ji, Chen, C, Hulsbergen, Wd, Jawahery, A, Lae, Ck, Roberts, Da, Simi, G, Blaylock, G, Dallapiccola, C, Hertzbach, S, Li, X, Moore, Tb, Saremi, S, Staengle, H, Willocq, Sy, Cowan, R, Koeneke, K, Sciolla, G, Sekula, Sj, Spitznagel, M, Taylor, F, Yamamoto, Rk, Kim, H, Patel, Pm, Robertson, Sh, Lazzaro, A, Lombardo, V, Palombo, F, Bauer, Jm, Cremaldi, L, Eschenburg, V, Godang, R, Kroeger, R, Reidy, J, Sanders, Da, Summers, Dj, Zhao, Hw, Brunet, S, Cote, D, Taras, P, Viaud, Fb, Nicholson, H, Cavallo, N, DE NARDO, G, DEL RE, D, Fabozzi, F, Gatto, C, Lista, L, Monorchio, D, Paolucci, P, Piccolo, D, Sciacca, C, Baak, M, Bulten, H, Raven, G, Snoek, Hl, Jessop, Cp, Losecco, Jm, Allmendinger, T, Benelli, G, Gan, Kk, Honscheid, K, Hufnagel, D, Jackson, Pd, Kagan, H, Kass, R, Pulliam, T, Rahimi, Am, TER-ANTONYAN, R, Wong, Qk, Blount, Nl, Brau, J, Frey, R, Igonkina, O, Lu, M, Potter, Ct, Rahmat, R, Sinev, Nb, Strom, D, Strube, J, Torrence, E, Galeazzi, F, Gaz, A, Margoni, M, Morandin, M, Pompili, A, Posocco, M, Rotondo, M, Simonetto, F, Stroili, R, Voci, C, Benayoun, M, Chauveau, J, David, P, DEL BUONO, L, DE LA VAISSIERE, C, Hamon, O, Hartfiel, Bl, John, Mjj, Malcles, J, Ocariz, J, Roos, L, Therin, G, Behera, Pk, Gladney, L, Panetta, J, Biasini, M, Covarelli, R, Pioppi, M, Angelini, C, Batignani, G, Bettarini, S, Bucci, F, Calderini, G, Carpinelli, M, Cenci, R, Forti, F, Giorgi, Ma, Lusiani, A, Marchiori, G, Mazur, Ma, Morganti, M, Neri, N, Rizzo, G, Walsh, J, Haire, M, Judd, D, Wagoner, De, Biesiada, J, Danielson, N, Elmer, P, Lau, Yp, Lu, C, Olsen, J, Smith, Aj, Telnov, Av, Bellini, F, Cavoto, G, D'Orazio, A, DI MARCO, E, Faccini, R, Ferrarotto, F, Ferroni, F, Gaspero, M, LI GIOI, L, Mazzoni, Ma, Morganti, S, Piredda, G, Polci, F, Tehrani, F, Voena, C, Ebert, M, Schroder, H, Waldi, R, Adye, T, DE GROOT, N, Franek, B, Olaiya, Eo, Wilson, Ff, Emery, S, Gaidot, A, Ganzhur, Sf, DE MONCHENAULT, Gh, Kozanecki, W, Legendre, M, Vasseur, G, Yeche, C, Zito, M, Park, W, Purohit, Mv, Wilson, Jr, Allen, Mt, Aston, D, Bartoldus, R, Bechtle, P, Berger, N, Boyarski, Am, Claus, R, Coleman, Jp, Convery, Mr, Cristinziani, M, Dingfelder, Jc, Dong, D, Dorfan, J, DUBOIS-FELSMANN, Gp, Dujmic, D, Dunwoodie, W, Field, Rc, Glanzman, T, Gowdy, Sj, Graham, Mt, Halyo, V, Hast, C, Hryn'Ova, T, Innes, Wr, Kelsey, Mh, Kim, P, Kocian, Ml, Leith, Dwg, Li, S, Libby, J, Luitz, S, Luth, V, Lynch, Hl, Macfarlane, Db, Marsiske, H, Messner, R, Muller, Dr, O'Grady, Cp, Ozcan, Ve, Perl, M, Perazzo, A, Ratcliff, Bn, Roodman, A, Salnikov, Aa, Schindler, Rh, Schwiening, J, Snyder, A, Stelzer, J, Su, D, Sullivan, Mk, Suzuki, K, Swain, Sk, Thompson, Jm, Va'Vra, J, VAN BAKEL, N, Weaver, M, Weinstein, Ajr, Wisniewski, Wj, Wittgen, M, Wright, Dh, Yarritu, Ak, Yi, K, Young, Cc, Burchat, Pr, Edwards, Aj, Majewski, Sa, Petersen, Ba, Roat, C, Wilden, L, Ahmed, S, Alam, M, Bula, R, Ernst, Ja, Jain, V, Pan, B, Saeed, Ma, Wappler, Fr, Zain, Sb, Bugg, W, Krishnamurthy, M, Spanier, Sm, Eckmann, R, Ritchie, Jl, Satpathy, A, Schilling, Cj, Schwitters, Rf, Izen, Jm, Kitayama, I, Lou, Xc, Ye, S, Bianchi, F, 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, Banerjee, S, Bhuyan, B, Brown, Cm, Fortin, D, Hamano, K, Kowalewski, R, Nugent, Im, Roney, Jm, Sobie, Rj, Back, Jj, Harrison, Pf, Latham, Te, Mohanty, Gb, Pappagallo, M, Band, Hr, Chen, X, Cheng, B, Dasu, S, Datta, M, Eichenbaum, Am, Flood, Kt, Hollar, Jj, Kutter, Pe, Li, H, Liu, R, Mellado, B, Mihalyi, A, Mohapatra, Ak, Pan, Y, Pierini, M, Prepost, R, Tan, P, Wu, Sl, Yu, Z, Neal, H, Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique Corpusculaire - Clermont-Ferrand (LPC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), BABAR, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
Jazyk:	angličtina
Rok vydání:	2006
Předmět:	upsilon(4s) slac Settore FIS/01 - Fisica Sperimentale BaBar [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] PACS: 13.25.Gv 14.40.Gx meson hadronic decay meson leptonic decay Upsilon meson resonances babar HEP High Energy Physics - Experiment
Zdroj:	Physical Review Letters Physical Review Letters, American Physical Society, 2006, 96, pp.232001. ⟨10.1103/PhysRevLett.96.232001⟩ Physical Review Letters, 2006, 96, pp.232001. ⟨10.1103/PhysRevLett.96.232001⟩
ISSN:	0031-9007 1079-7114
Popis:	We present the first measurement of $\Upsilon(4S)$ decays to $\pi^+pi^-\Upsilon(1S)$ and $\pi^+pi^-\Upsilon(2S)$ based on a sample of 230$\times10^6$ $\Upsilon(4S)$ mesons collected with the BABAR detector. We measure the product branching fractions ${\cal B}(\Upsilon(4S)\to \pi^+pi^-\Upsilon(1S))\times{\cal B}(\Upsilon(1S)\to\mu^+\mu^-)=(2.23\pm0.25_{stat} \pm0.27_{sys})\times 10^{-6}$ and ${\cal B}(\Upsilon(4S)\to \pi^+pi^-\Upsilon(2S))\times{\cal B}(\Upsilon(2S)\to\mu^+\mu^-)=(1.69\pm0.26_{stat}\pm0.20_{sys})\times 10^{-6}$, from which we derive the partial widths $\Gamma(\Upsilon(4S)\to \pi^+pi^-\Upsilon(1S))=(1.8\pm0.4)$~keV and $\Gamma(\Upsilon(4S)\to \pi^+pi^-\Upsilon(2S))=(2.7\pm0.8)$~keV. Comment: 7 pages,, 3 figures,submitted to Physical Review Letters
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=pmid_dedup__::4c0f79e3e41ec21f93c021333d01da90 http://hdl.handle.net/11585/534873 Zobrazit plný text záznamu