We present the first measurement of Upsilon(4S) decays to pi(+)pi(-)Upsilon(1S) and pi(+)pi(-)Upsilon(2S) based on a sample of 230x10(6)Upsilon(4S) mesons collected with the BABAR detector. We measure the product branching fractions B(Upsilon(4S)->pi(+)pi(-)Upsilon(1S))xB(Upsilon(1S)->mu(+)mu(-))=(2.23 +/- 0.25(stat)+/- 0.27(syst))x10(-6) and B(Upsilon(4S)->pi(+)pi(-)Upsilon(2S))xB(Upsilon(2S)->mu(+)mu(-))=(1.69 +/- 0.26(stat)+/- 0.20(syst))x10(-6), from which we derive the partial widths Gamma(Upsilon(4S)->pi(+)pi(-)Upsilon(1S))=(1.8 +/- 0.4) keV and Gamma(Upsilon(4S)->pi(+)pi(-)Upsilon(2S))=(2.7 +/- 0.8) keV.
Observation of Upsilon(4S) decays to pi(+)pi(-)Upsilon(1S) and pi(+)pi(-)Upsilon(2S) / 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, Ys; Eigen, G; Ofte, I; Stugu, B; Abrams, Gs; Battaglia, M; Brown, Dn; BUTTON SHAFER, J; Cahn, Rn; Charles, E; Gill, Ms; 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, Ns; Mattison, Ts; Mckenna, Ja; Khan, A; Kyberd, P; Saleem, M; Teodorescu, L; Blinov, Ve; Bukin, Ad; Druzhinin, Vp; Golubev, Vb; Onuchin, Ap; Serednyakov, Si; Skovpen, Yi; 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[10.1103/physrevlett.96.232001]
Observation of Upsilon(4S) decays to pi(+)pi(-)Upsilon(1S) and pi(+)pi(-)Upsilon(2S)
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 YS; EIGEN G; OFTE I; STUGU B; ABRAMS GS; BATTAGLIA M; BROWN DN; BUTTON SHAFER J; CAHN RN; CHARLES E; GILL MS; 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 NS; MATTISON TS; 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 DS; 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, SHAHRAM ;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 WS; 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; 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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 DWGS; 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 MS; 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.
2006
Abstract
We present the first measurement of Upsilon(4S) decays to pi(+)pi(-)Upsilon(1S) and pi(+)pi(-)Upsilon(2S) based on a sample of 230x10(6)Upsilon(4S) mesons collected with the BABAR detector. We measure the product branching fractions B(Upsilon(4S)->pi(+)pi(-)Upsilon(1S))xB(Upsilon(1S)->mu(+)mu(-))=(2.23 +/- 0.25(stat)+/- 0.27(syst))x10(-6) and B(Upsilon(4S)->pi(+)pi(-)Upsilon(2S))xB(Upsilon(2S)->mu(+)mu(-))=(1.69 +/- 0.26(stat)+/- 0.20(syst))x10(-6), from which we derive the partial widths Gamma(Upsilon(4S)->pi(+)pi(-)Upsilon(1S))=(1.8 +/- 0.4) keV and Gamma(Upsilon(4S)->pi(+)pi(-)Upsilon(2S))=(2.7 +/- 0.8) keV.
Citazione
Observation of Upsilon(4S) decays to pi(+)pi(-)Upsilon(1S) and pi(+)pi(-)Upsilon(2S) / 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, Ys; Eigen, G; Ofte, I; Stugu, B; Abrams, Gs; Battaglia, M; Brown, Dn; BUTTON SHAFER, J; Cahn, Rn; Charles, E; Gill, Ms; 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, Ns; Mattison, Ts; Mckenna, Ja; Khan, A; Kyberd, P; Saleem, M; Teodorescu, L; Blinov, Ve; Bukin, Ad; Druzhinin, Vp; Golubev, Vb; Onuchin, Ap; Serednyakov, Si; Skovpen, Yi; 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Il report seguente simula gli indicatori relativi alla propria produzione scientifica in relazione alle soglie ASN 2023-2025 del proprio SC/SSD. Si ricorda che il superamento dei valori soglia (almeno 2 su 3) è requisito necessario ma non sufficiente al conseguimento dell'abilitazione.
