The τ-→ηπ-π+π-ντ decay with the η→γγ mode is studied using 384fb-1 of data collected by the BABAR detector. The branching fraction is measured to be (1.60±0. 05±0.11)×10-4. It is found that τ-→f1(1285)π- ντ→ηπ-π+π-ντ is the dominant decay mode with a branching fraction of (1.11±0.06±0.05)×10-4. The first error on the branching fractions is statistical and the second systematic. Note that no particle identification algorithm is applied to the charged tracks to distinguish pions from kaons. In addition, a 90% confidence level upper limit on the branching fraction of the τ-→η′(958)π-ντ decay is measured to be 7.2×10-6. This last decay proceeds through a second-class current and is expected to be forbidden in the limit of isospin symmetry.

Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2008). Measurement of the τ-→ηπ-π+π-ντ branching fraction and a search for a second-class current in the τ- →η′(958)π-ντ decay. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 77(11) [10.1103/PhysRevD.77.112002].

Measurement of the τ-→ηπ-π+π-ντ branching fraction and a search for a second-class current in the τ- →η′(958)π-ντ decay

CARPINELLI, Massimo;
2008

Abstract

The τ-→ηπ-π+π-ντ decay with the η→γγ mode is studied using 384fb-1 of data collected by the BABAR detector. The branching fraction is measured to be (1.60±0. 05±0.11)×10-4. It is found that τ-→f1(1285)π- ντ→ηπ-π+π-ντ is the dominant decay mode with a branching fraction of (1.11±0.06±0.05)×10-4. The first error on the branching fractions is statistical and the second systematic. Note that no particle identification algorithm is applied to the charged tracks to distinguish pions from kaons. In addition, a 90% confidence level upper limit on the branching fraction of the τ-→η′(958)π-ντ decay is measured to be 7.2×10-6. This last decay proceeds through a second-class current and is expected to be forbidden in the limit of isospin symmetry.
Articolo in rivista - Articolo scientifico
BABAR detector
English
B. Aubert et al. (BABAR Collaboration)
Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2008). Measurement of the τ-→ηπ-π+π-ντ branching fraction and a search for a second-class current in the τ- →η′(958)π-ντ decay. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 77(11) [10.1103/PhysRevD.77.112002].
Aubert, B; Bona, M; Boutigny, D; Karyotakis, Y; Lees, J; Poireau, V; Prudent, X; Tisserand, V; Zghiche, A; Tico, J; Grauges, E; Lopez, L; Palano, A; Pappagallo, M; Eigen, G; Stugu, B; Sun, L; Abrams, G; Battaglia, M; Brown, D; Button Shafer, J; Cahn, R; Groysman, Y; Jacobsen, R; Kadyk, J; Kerth, L; Kolomensky, Y; Kukartsev, G; Pegna, D; Lynch, G; Mir, L; Orimoto, T; Osipenkov, I; Ronan, M; Tackmann, K; Tanabe, T; Wenzel, W; Sanchez, P; Hawkes, C; Watson, A; Koch, H; Schroeder, T; Walker, D; Asgeirsson, D; Cuhadar Donszelmann, T; Fulsom, B; Hearty, C; Mattison, T; Mckenna, J; Khan, A; Saleem, M; Teodorescu, L; Blinov, V; Bukin, A; Druzhinin, V; Golubev, V; Onuchin, A; Serednyakov, S; Skovpen, Y; Solodov, E; Todyshev, K; Bondioli, M; Curry, S; Eschrich, I; Kirkby, D; Lankford, A; Lund, P; Mandelkern, M; Martin, E; Stoker, D; Abachi, S; Buchanan, C; Gary, J; Liu, F; Long, O; Shen, B; Vitug, G; Zhang, L; Paar, H; Rahatlou, S; Sharma, V; Berryhill, J; Campagnari, C; Cunha, A; Dahmes, B; Hong, T; Kovalskyi, D; Richman, J; Beck, T; Eisner, A; Flacco, C; Heusch, C; Kroseberg, J; Lockman, W; Schalk, T; Schumm, B; Seiden, A; Wilson, M; Winstrom, L; Chen, E; Cheng, C; Fang, F; Hitlin, D; Narsky, I; Piatenko, T; Porter, F; Andreassen, R; Mancinelli, G; Meadows, B; Mishra, K; Sokoloff, M; Blanc, F; Bloom, P; Chen, S; Ford, W; Hirschauer, J; Kreisel, A; Nagel, M; Nauenberg, U; Olivas, A; Smith, J; Ulmer, K; Wagner, S; Zhang, J; Gabareen, A; Soffer, A; Toki, W; Wilson, R; Winklmeier, F; Altenburg, D; Feltresi, E; Hauke, A; Jasper, H; Merkel, J; Petzold, A; Spaan, B; Wacker, K; Klose, V; Kobel, M; Lacker, H; Mader, W; Nogowski, R; Schubert, J; Schubert, K; Schwierz, R; Sundermann, J; Volk, A; Bernard, D; Bonneaud, G; Latour, E; Lombardo, V; Thiebaux, C; Verderi, M; Clark, P; Gradl, W; Muheim, F; Playfer, S; Robertson, A; Watson, J; Xie, Y; Andreotti, M; Bettoni, D; Bozzi, C; Calabrese, R; Cecchi, A; Cibinetto, G; Franchini, P; Luppi, E; Negrini, M; Petrella, A; Piemontese, L; Prencipe, E; Santoro, V; Anulli, F; Baldini Ferroli, R; Calcaterra, A; de Sangro, R; Finocchiaro, G; Pacetti, S; Patteri, P; Peruzzi, I; Piccolo, M; Rama, M; Zallo, A; Buzzo, A; Contri, R; Lo Vetere, M; Macri, M; Monge, M; Passaggio, S; Patrignani, C; Robutti, E; Santroni, A; Tosi, S; Chaisanguanthum, K; Morii, M; Wu, J; Dubitzky, R; Marks, J; Schenk, S; Uwer, U; Bard, D; Dauncey, P; Flack, R; Nash, J; Vazquez, W; Tibbetts, M; Behera, P; Chai, X; Charles, M; Mallik, U; Cochran, J; Crawley, H; Dong, L; Eyges, V; Meyer, W; Prell, S; Rosenberg, E; Rubin, A; Gao, Y; Gritsan, A; Guo, Z; Lae, C; Denig, A; Fritsch, M; Schott, G; Arnaud, N; Bequilleux, J; D'Orazio, A; Davier, M; Grosdidier, G; Hocker, A; Lepeltier, V; Le Diberder, F; Lutz, A; Pruvot, S; Rodier, S; Roudeau, P; Schune, M; Serrano, J; Sordini, V; Stocchi, A; Wang, L; Wang, W; Wormser, G; Lange, D; Wright, D; Bingham, I; Burke, J; Chavez, C; Fry, J; Gabathuler, E; Gamet, R; Hutchcroft, D; Payne, D; Schofield, K; Touramanis, C; Bevan, A; George, K; Di Lodovico, F; Sacco, R; Sigamani, M; Cowan, G; Flaecher, H; Hopkins, D; Paramesvaran, S; Salvatore, F; Wren, A; Brown, D; Davis, C; Allison, J; Barlow, N; Barlow, R; Chia, Y; Edgar, C; Lafferty, G; West, T; Yi, J; Anderson, J; Chen, C; Jawahery, A; Roberts, D; Simi, G; Tuggle, J; Dallapiccola, C; Hertzbach, S; Li, X; Moore, T; Salvati, E; Saremi, S; Cowan, R; Dujmic, D; Fisher, P; Koeneke, K; Sciolla, G; Spitznagel, M; Taylor, F; Yamamoto, R; Zhao, M; Zheng, Y; Mclachlin, S; Patel, P; Robertson, S; Lazzaro, A; Palombo, F; Bauer, J; Cremaldi, L; Eschenburg, V; Godang, R; Kroeger, R; Sanders, D; Summers, D; Zhao, H; Brunet, S; Cote, D; Simard, M; Taras, P; Viaud, F; Nicholson, H; De Nardo, G; Fabozzi, F; Lista, L; Monorchio, D; Sciacca, C; Baak, M; Raven, G; Snoek, H; Jessop, C; Knoepfel, K; Losecco, J; Benelli, G; Corwin, L; Honscheid, K; Kagan, H; Kass, R; Morris, J; Rahimi, A; Regensburger, J; Sekula, S; Wong, Q; Blount, N; Brau, J; Frey, R; Igonkina, O; Kolb, J; Lu, M; Rahmat, R; Sinev, N; Strom, D; Strube, J; Torrence, E; Gagliardi, N; Gaz, A; Margoni, M; Morandin, M; Pompili, A; Posocco, M; Rotondo, M; Simonetto, F; Stroili, R; Voci, C; Ben Haim, E; Briand, H; Calderini, G; Chauveau, J; David, P; Del Buono, L; de la Vaissiere, C; Hamon, O; Leruste, P; Malcles, J; Ocariz, J; Perez, A; Prendki, J; Gladney, L; Biasini, M; Covarelli, R; Manoni, E; Angelini, C; Batignani, G; Bettarini, S; Carpinelli, M; Cenci, R; Cervelli, A; Forti, F; Giorgi, M; Lusiani, A; Marchiori, G; Mazur, M; Morganti, M; Neri, N; Paoloni, E; Rizzo, G; Walsh, J; Biesiada, J; Elmer, P; Lau, Y; Lu, C; Olsen, J; Smith, A; Telnov, A; Baracchini, E; Bellini, F; Cavoto, G; del Re, D; Di Marco, E; Faccini, R; Ferrarotto, F; Ferroni, F; Gaspero, M; Jackson, P; Mazzoni, M; Morganti, S; Piredda, G; Polci, F; Renga, F; Voena, C; Ebert, M; Hartmann, T; Schroder, H; Waldi, R; Adye, T; Castelli, G; Franek, B; Olaiya, E; Roethel, W; Wilson, F; Emery, S; Escalier, M; Gaidot, A; Ganzhur, S; de Monchenault, G; Kozanecki, W; Vasseur, G; Yeche, C; Zito, M; Chen, X; Liu, H; Park, W; Purohit, M; White, R; Wilson, J; Allen, M; Aston, D; Bartoldus, R; Bechtle, P; Claus, R; Coleman, J; Convery, M; Dingfelder, J; Dorfan, J; Dubois Felsmann, G; Dunwoodie, W; Field, R; Glanzman, T; Gowdy, S; Graham, M; Grenier, P; Hast, C; Innes, W; Kaminski, J; Kelsey, M; Kim, H; Kim, P; Kocian, M; Leith, D; Li, S; Luitz, S; Luth, V; Lynch, H; Macfarlane, D; Marsiske, H; Messner, R; Muller, D; Nelson, S; O'Grady, C; Ofte, I; Perazzo, A; Perl, M; Pulliam, T; Ratcliff, B; Roodman, A; Salnikov, A; Schindler, R; Schwiening, J; Snyder, A; Su, D; Sullivan, M; Sun, S; Suzuki, K; Swain, S; Thompson, J; Va'Vra, J; Wagner, A; Weaver, M; Wisniewski, W; Wittgen, M; Wright, D; Yarritu, A; Yi, K; Young, C; Ziegler, V; Burchat, P; Edwards, A; Majewski, S; Miyashita, T; Petersen, B; Wilden, L; Ahmed, S; Alam, M; Bula, R; Ernst, J; Pan, B; Saeed, M; Wappler, F; Zain, S; Spanier, S; Wogsland, B; Eckmann, R; Ritchie, J; Ruland, A; Schilling, C; Schwitters, R; Izen, J; Lou, X; Ye, S; Bianchi, F; Gallo, F; Gamba, D; Pelliccioni, M; Bomben, M; Bosisio, L; Cartaro, C; Cossutti, F; Della Ricca, G; Lanceri, L; Vitale, L; Azzolini, V; Lopez March, N; Martinez Vidal, F; Milanes, D; Oyanguren, A; Albert, J; Banerjee, S; Bhuyan, B; Hamano, K; Kowalewski, R; Lewczuk, M; Nugent, I; Roney, J; Sobie, R; Harrison, P; Ilic, J; Latham, T; Mohanty, G; Band, H; Chen, X; Dasu, S; Flood, K; Hollar, J; Kutter, P; Pan, Y; Pierini, M; Prepost, R; Wu, S; Neal, H
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389604
Citazioni
  • Scopus 36
  • ???jsp.display-item.citation.isi??? 13
Social impact