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Observation of the decayB0→ρ+ρ−and measurement of the branching fraction and polarization
- Author(s): Aubert, B
- Barate, R
- Boutigny, D
- Couderc, F
- Gaillard, J-M
- Hicheur, A
- Karyotakis, Y
- Lees, JP
- Tisserand, V
- Zghiche, A
- Palano, A
- Pompili, A
- Chen, JC
- Qi, ND
- Rong, G
- Wang, P
- Zhu, YS
- Eigen, G
- Ofte, I
- Stugu, B
- Abrams, GS
- Borgland, AW
- Breon, AB
- Brown, DN
- Button-Shafer, J
- Cahn, RN
- Charles, E
- Day, CT
- Gill, MS
- Gritsan, AV
- Groysman, Y
- Jacobsen, RG
- Kadel, RW
- Kadyk, J
- Kerth, LT
- Kolomensky, Yu G
- Kukartsev, G
- LeClerc, C
- Levi, ME
- Lynch, G
- Mir, LM
- Oddone, PJ
- Orimoto, TJ
- Pripstein, M
- Roe, NA
- Ronan, MT
- Shelkov, VG
- Telnov, AV
- Wenzel, WA
- Ford, K
- Harrison, TJ
- Hawkes, CM
- Morgan, SE
- Watson, AT
- Watson, NK
- Fritsch, M
- Goetzen, K
- Held, T
- Koch, H
- Lewandowski, B
- Pelizaeus, M
- Peters, K
- Schmuecker, H
- Steinke, M
- Boyd, JT
- Chevalier, N
- Cottingham, WN
- Kelly, MP
- Latham, TE
- Mackay, C
- Wilson, FF
- Abe, K
- Cuhadar-Donszelmann, T
- Hearty, C
- Mattison, TS
- McKenna, JA
- Thiessen, D
- Kyberd, P
- McKemey, AK
- Teodorescu, L
- Blinov, VE
- Bukin, AD
- Golubev, VB
- Ivanchenko, VN
- Kravchenko, EA
- Onuchin, AP
- Serednyakov, SI
- Skovpen, Yu I
- Solodov, EP
- Yushkov, AN
- Best, D
- Bruinsma, M
- Chao, M
- Eschrich, I
- Kirkby, D
- Lankford, AJ
- Mandelkern, M
- Mommsen, RK
- Roethel, W
- Stoker, DP
- Buchanan, C
- Hartfiel, BL
- Gary, JW
- Layter, J
- Shen, BC
- Wang, K
- del Re, D
- Hadavand, HK
- Hill, EJ
- MacFarlane, DB
- Paar, HP
- Rahatlou, Sh
- Sharma, V
- Berryhill, JW
- Campagnari, C
- Dahmes, B
- Levy, SL
- Long, O
- Lu, A
- Mazur, MA
- Richman, JD
- Verkerke, W
- Beck, TW
- Beringer, J
- Eisner, AM
- Heusch, CA
- Lockman, WS
- Schalk, T
- Schmitz, RE
- Schumm, BA
- Seiden, A
- Spradlin, P
- Walkowiak, W
- Williams, DC
- Wilson, MG
- Albert, J
- Chen, E
- Dubois-Felsmann, GP
- Dvoretskii, A
- Erwin, RJ
- Hitlin, DG
- Narsky, I
- Piatenko, T
- Porter, FC
- Ryd, A
- Samuel, A
- Yang, S
- Jayatilleke, S
- Mancinelli, G
- Meadows, BT
- Sokoloff, MD
- Abe, T
- Blanc, F
- Bloom, P
- Chen, S
- Clark, PJ
- Ford, WT
- Nauenberg, U
- Olivas, A
- Rankin, P
- Roy, J
- Smith, JG
- van Hoek, WC
- Zhang, L
- Harton, JL
- Hu, T
- Soffer, A
- Toki, WH
- Wilson, RJ
- Zhang, J
- Altenburg, D
- Brandt, T
- Brose, J
- Colberg, T
- Dickopp, M
- Feltresi, E
- Hauke, A
- Lacker, HM
- Maly, E
- Müller-Pfefferkorn, R
- Nogowski, R
- Otto, S
- Schubert, J
- Schubert, KR
- Schwierz, R
- Spaan, B
- Bernard, D
- Bonneaud, GR
- Brochard, F
- Grenier, P
- Thiebaux, Ch
- Vasileiadis, G
- Verderi, M
- Bard, DJ
- Khan, A
- Lavin, D
- Muheim, F
- Playfer, S
- Andreotti, M
- Azzolini, V
- Bettoni, D
- Bozzi, C
- Calabrese, R
- Cibinetto, G
- Luppi, E
- Negrini, M
- Piemontese, L
- Sarti, A
- Treadwell, E
- Baldini-Ferroli, R
- Calcaterra, A
- de Sangro, R
- Finocchiaro, G
- Patteri, P
- Piccolo, M
- Zallo, A
- Buzzo, A
- Capra, R
- Contri, R
- Crosetti, G
- Lo Vetere, M
- Macri, M
- Monge, MR
- Passaggio, S
- Patrignani, C
- Robutti, E
- Santroni, A
- Tosi, S
- Bailey, S
- Morii, M
- Won, E
- Dubitzky, RS
- Langenegger, U
- Bhimji, W
- Bowerman, DA
- Dauncey, PD
- Egede, U
- Gaillard, JR
- Morton, GW
- Nash, JA
- Taylor, GP
- Grenier, GJ
- Lee, S-J
- Mallik, U
- Cochran, J
- Crawley, HB
- Lamsa, J
- Meyer, WT
- Prell, S
- Rosenberg, EI
- Yi, J
- Davier, M
- Grosdidier, G
- Höcker, A
- Laplace, S
- Le Diberder, F
- Lepeltier, V
- Lutz, AM
- Petersen, TC
- Plaszczynski, S
- Schune, MH
- Tantot, L
- Wormser, G
- Brigljević, V
- Cheng, CH
- Lange, DJ
- Simani, MC
- Wright, DM
- Bevan, AJ
- Coleman, JP
- Fry, JR
- Gabathuler, E
- Gamet, R
- Kay, M
- Parry, RJ
- Payne, DJ
- Sloane, RJ
- Touramanis, C
- Back, JJ
- Harrison, PF
- Mohanty, GB
- Brown, CL
- Cowan, G
- Flack, RL
- Flaecher, HU
- George, S
- Green, MG
- Kurup, A
- Marker, CE
- McMahon, TR
- Ricciardi, S
- Salvatore, F
- Vaitsas, G
- Winter, MA
- Brown, D
- Davis, CL
- Allison, J
- Barlow, NR
- Barlow, RJ
- Hart, PA
- Hodgkinson, MC
- Lafferty, GD
- Lyon, AJ
- Williams, JC
- Farbin, A
- Hulsbergen, WD
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- Kovalskyi, D
- Lae, CK
- Lillard, V
- Roberts, DA
- Blaylock, G
- Dallapiccola, C
- Flood, KT
- Hertzbach, SS
- Kofler, R
- Koptchev, VB
- Moore, TB
- Saremi, S
- Staengle, H
- Willocq, S
- Cowan, R
- Sciolla, G
- Taylor, F
- Yamamoto, RK
- Mangeol, DJJ
- Patel, PM
- Robertson, SH
- Lazzaro, A
- Palombo, F
- Bauer, JM
- Cremaldi, L
- Eschenburg, V
- Godang, R
- Kroeger, R
- Reidy, J
- Sanders, DA
- Summers, DJ
- Zhao, HW
- Brunet, S
- Cote-Ahern, D
- Taras, P
- Nicholson, H
- Cartaro, C
- Cavallo, N
- De Nardo, G
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- Piccolo, D
- Sciacca, C
- Baak, MA
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- Brau, B
- Gan, KK
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- Ter-Antonyan, R
- Wong, QK
- Brau, J
- Frey, R
- Igonkina, O
- Potter, CT
- Sinev, NB
- Strom, D
- Torrence, E
- Colecchia, F
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- Galeazzi, F
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- Rotondo, M
- Simonetto, F
- Stroili, R
- Tiozzo, G
- Voci, C
- Benayoun, M
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- Chauveau, J
- David, P
- de la Vaissière, Ch
- Del Buono, L
- Hamon, O
- John, MJJ
- Leruste, Ph
- Ocariz, J
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- Roos, L
- T’Jampens, S
- Therin, G
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- Re, V
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- Bucci, F
- Calderini, G
- Carpinelli, M
- Del Gamba, V
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- Giorgi, MA
- Lusiani, A
- Marchiori, G
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- Haire, M
- Judd, D
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- Lu, C
- Miftakov, V
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- Kelsey, MH
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- Wagner, SR
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- Weinstein, AJR
- Wisniewski, WJ
- Wright, DH
- Young, CC
- Burchat, PR
- Edwards, AJ
- Meyer, TI
- Petersen, BA
- Roat, C
- Ahmed, M
- Ahmed, S
- Alam, MS
- Ernst, JA
- Saeed, MA
- Saleem, M
- Wappler, FR
- Bugg, W
- Krishnamurthy, M
- Spanier, SM
- Eckmann, R
- Kim, H
- Ritchie, JL
- Satpathy, A
- Schwitters, RF
- Izen, JM
- Kitayama, I
- Lou, XC
- Ye, S
- Bianchi, F
- Bona, M
- Gallo, F
- Gamba, D
- Borean, C
- Bosisio, L
- Cossutti, F
- Della Ricca, G
- Dittongo, S
- Grancagnolo, S
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- Poropat, P
- Vitale, L
- Vuagnin, G
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- Banerjee, Sw
- Brown, CM
- Fortin, D
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- Datta, M
- Eichenbaum, AM
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- von Wimmersperg-Toeller, JH
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- Yu, Z
- Neal, H
- et al.
Abstract
We have observed the rare decay B0 → ρ+ ρ- in a sample of 89 million BB̄ pairs recorded with the BABAR detector. The number of observed events is 88-21+23±9 with a significance of 5.1 standard deviations with systematic uncertainties included. The branching fraction and the longitudinal polarization are measured to be β(B0 → ρ+ ρ-) = (25-6-6+7+5× 10-6 and ΓLΓ = 0.98-0.08+0.02±0. 03, respectively. © 2004 The American Physical Society.
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