A study of the decay width difference in the B-s(0)-(B)over-bar(s)(0) system using phi phi correlations

Barate, R; Decamp, D; Ghez, P; Goy, C; Lees, Jp; Merle, E; Minard, Mn; Pietrzyk, B; Alemany, R; Bravo, S; Casado, Mp; Chmeissani, M; Crespo, Jm; Fernandez, E; Fernandez Bosman, M; Garrido, L; Grauges, E; Martinez, M; Merino, G; Miquel, R; Mir, Lm; Pacheco, A; Ruiz, H; Colaleo, A; Creanza, D; de Palma, M; Iaselli, G; Maggi, G; Maggi, M; Nuzzo, S; Ranieri, A; Raso, G; Ruggieri, F; Selvaggi, G; Silvestris, L; Tempesta, P; Tricomi, A; Zito, G; Huang, X; Lin, J; Ouyang, Q; Wang, T; Xie, Y; Xu, R; Xue, S; Zhang, J; Zhang, L; Zhao, W; Abbaneo, D; Boix, G; Buchmuller, O; Cattaneo, M; Cerutti, F; Dissertori, G; Drevermann, H; Forty, Rw; Frank, M; Greening, Tc; Halley, Aw; Hansen, Jb; Harvey, J; Janot, P; Jost, B; Lehraus, I; Mato, P; Minten, A; Moutoussi, A; Ranjard, F; Rolandi, Luigi; Schlatter, D; Schmitt, M; Schneider, O; Spagnolo, P; Tejessy, W; Teubert, F; Tournefier, E; Wright, Ae; Ajaltouni, Z; Badaud, F; Chazelle, G; Deschamps, O; Favard, A; Gay, P; Guicheney, C; Henrard, P; Jousset, J; Michel, B; Monteil, S; Montret, Jc; Pallin, D; Perret, P; Podlyski, F; Hansen, Jd; Hansen, Jr; Hansen, Ph; Nilsson, Bs; Waananen, A; Daskalakis, G; Kyriakis, A; Markou, C; Simopoulou, E; Vayaki, A; Blondel, A; Bonneaud, G; Brient, Jc; Rouge, A; Rumpf, M; Swynghedauw, M; Verderi, M; Videau, H; Focardi, E; Parrini, G; Zachariadou, K; Antonelli, A; Bencivenni, G; Bologna, G; Bossi, F; Campana, P; Capon, G; Chiarella, V; Laurelli, P; Mannocchi, G; Murtas, F; Murtas, Gp; Passalacqua, L; Pepe Altarelli, M; Lynch, Jg; Negus, P; O'Shea, V; Raine, C; Teixeira Dias, P; Thompson, As; Cavanaugh, R; Dhamotharan, S; Geweniger, C; Hanke, P; Hansper, G; Hepp, V; Kluge, Ee; Putzer, A; Sommer, J; Tittel, K; Werner, S; Wunsch, M; Beuselinck, R; Binnie, Dm; Cameron, W; Dornan, Pj; Girone, M; Marinelli, N; Sedgbeer, Jk; Thompson, Jc; Thomson, E; Ghete, Vm; Girtler, P; Kneringer, E; Kuhn, D; Rudolph, G; Bowdery, Ck; Buck, Pg; Finch, Aj; Foster, F; Hughes, G; Jones, Rwl; Robertson, Na; Giehl, I; Jakobs, K; Kleinknecht, K; Quast, G; Renk, B; Rohne, E; Sander, Hg; Wachsmuth, H; Zeitnitz, C; Bonissent, A; Carr, J; Coyle, P; Leroy, O; Payre, P; Rousseau, D; Talby, M; Aleppo, M; Antonelli, M; Ragusa, F; Dietl, H; Ganis, C; Huttmann, K; Lutjens, G; Mannert, C; Manner, W; Moser, Hg; Schael, S; Settles, R; Stenzel, H; Wiedenmann, W; Wolf, G; Azzurri, P; Boucrot, J; Callot, O; Chen, S; Cordier, A; Davier, M; Duflot, L; Grivaz, Jf; Heusse, P; Jacholkowska, A; Le Diberder, F; Lefrancois, J; Lutz, Am; Schune, Mh; Veillet, Jj; Videau, I; Zerwas, D; Bagliesi, G; Boccali, T; Calderini, G; Ciulli, V; Foa, L; Giassi, A; Ligabue, Franco; Messineo, A; Palla, F; Rizzo, G; Sanguinetti, G; Sciaba, A; Sguazzoni, G; Tenchini, R; Venturi, A; Verdini, Pg; Blair, Ga; Cowan, G; Green, Mg; Medcalf, T; Strong, Ja; Clifft, Rw; Edgecock, Tr; Norton, Pr; Tomalin, Ir; Bloch Devaux, B; Colas, P; Emery, S; Kozanecki, W; Lancon, E; Lemaire, Mc; Locci, E; Perez, P; Rander, J; Renardy, Jf; Roussarie, A; Schuller, Jp; Schwindling, J; Trabelsi, A; Vallage, B; Black, Sn; Dann, Jh; Johnson, Rp; Kim, Hy; Konstantinidis, N; Litke, Am; Mcneil, Ma; Taylor, G; Booth, Cn; Cartwright, S; Combley, F; Lehto, M; Thompson, Lf; Affholderbach, K; Bohrer, A; Brandt, S; Grupen, C; Misiejuk, A; Prange, G; Sieler, U; Giannini, G; Gobbo, B; Rothberg, J; Wasserbaech, S; Armstrong, Sr; Elmer, P; Ferguson, Dps; Cao, Y; Gonzalez, S; Hayes, Oj; Hu, H; Jin, S; Kile, J; Mcnamara, Pa; Nielsen, J; Orejudos, W; Pan, Yb; Saadi, Y; Scott, Ij; Walsh, J; von Wimmersperg Toeller JH,; Wu, Sl; Wu, X; Zobernig, G; RI ANTONELLI ANTONELLA/C 6238 2011 Jones Roger/H 5578 2011 Passalacqua Luca/F 5127 2011 Murtas Fabrizio/B 5729 2012 O'Shea Val/G 1279 2010,

doi:10.1016/S0370-2693(00)00750-4

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In a data sample of about four million hadronic Z decays recorded with the ALEPH detector from 1991 to 1995. the B-s(0) --> (Ds(*)+Ds()*()-) decay is observed, based on tagging the final state with two phi mesons in the same hemisphere. The D-s((*)+) D-s((*)-) final state is mostly CP even and corresponds to the short-lived B-s(0) mass eigenstate. The branching ratio of this decay is measured to be BR(B-s(0)(short) --> D-s((*)+) D-s((*)-)) = (23 +/- 10(-9)(+19))%. A measurement of the lifetime of the B-s(0)(short) gives 1.27 +/- 0.33 +/- 0.08 ps. The lifetime and branching ratio measurements provide two essentially independent methods of estimating the relative decay width difference Delta Gamma/Gamma in the B-s(0)-(B) over bar(s)(0) system, corresponding to an average value Delta Gamma/Gamma = (25+/-(21)(14))%. (C) 2000 Elsevier Science B.V. All rights reserved.

Titolo:	A study of the decay width difference in the B-s(0)-(B)over-bar(s)(0) system using phi phi correlations
Autori:	Barate R Decamp D Ghez P Goy C Lees JP Merle E Minard MN Pietrzyk B Alemany R Bravo S Casado MP Chmeissani M Crespo JM Fernandez E Fernandez Bosman M Garrido L Grauges E Martinez M Merino G Miquel R Mir LM Pacheco A Ruiz H Colaleo A Creanza D de Palma M Iaselli G Maggi G Maggi M Nuzzo S Ranieri A Raso G Ruggieri F Selvaggi G Silvestris L Tempesta P Tricomi A Zito G Huang X Lin J Ouyang Q Wang T Xie Y Xu R Xue S Zhang J Zhang L Zhao W Abbaneo D Boix G Buchmuller O Cattaneo M Cerutti F Dissertori G Drevermann H Forty RW Frank M Greening TC Halley AW Hansen JB Harvey J Janot P Jost B Lehraus I Mato P Minten A Moutoussi A Ranjard F ROLANDI, LUIGI Schlatter D Schmitt M Schneider O Spagnolo P Tejessy W Teubert F Tournefier E Wright AE Ajaltouni Z Badaud F Chazelle G Deschamps O Favard A Gay P Guicheney C Henrard P Jousset J Michel B Monteil S Montret JC Pallin D Perret P Podlyski F Hansen JD Hansen JR Hansen PH Nilsson BS Waananen A Daskalakis G Kyriakis A Markou C Simopoulou E Vayaki A Blondel A Bonneaud G Brient JC Rouge A Rumpf M Swynghedauw M Verderi M Videau H Focardi E Parrini G Zachariadou K Antonelli A Bencivenni G Bologna G Bossi F Campana P Capon G Chiarella V Laurelli P Mannocchi G Murtas F Murtas GP Passalacqua L Pepe Altarelli M Lynch JG Negus P O'Shea V Raine C Teixeira Dias P Thompson AS Cavanaugh R Dhamotharan S Geweniger C Hanke P Hansper G Hepp V Kluge EE Putzer A Sommer J Tittel K Werner S Wunsch M Beuselinck R Binnie DM Cameron W Dornan PJ Girone M Marinelli N Sedgbeer JK Thompson JC Thomson E Ghete VM Girtler P Kneringer E Kuhn D Rudolph G Bowdery CK Buck PG Finch AJ Foster F Hughes G Jones RWL Robertson NA Giehl I Jakobs K Kleinknecht K Quast G Renk B Rohne E Sander HG Wachsmuth H Zeitnitz C Bonissent A Carr J Coyle P Leroy O Payre P Rousseau D Talby M Aleppo M Antonelli M Ragusa F Dietl H Ganis C Huttmann K Lutjens G Mannert C Manner W Moser HG Schael S Settles R Stenzel H Wiedenmann W Wolf G Azzurri P Boucrot J Callot O Chen S Cordier A Davier M Duflot L Grivaz JF Heusse P Jacholkowska A Le Diberder F Lefrancois J Lutz AM Schune MH Veillet JJ Videau I Zerwas D Bagliesi G Boccali T Calderini G Ciulli V Foa L Giassi A LIGABUE, FRANCO Messineo A Palla F Rizzo G Sanguinetti G Sciaba A Sguazzoni G Tenchini R Venturi A Verdini PG Blair GA Cowan G Green MG Medcalf T Strong JA Clifft RW Edgecock TR Norton PR Tomalin IR Bloch Devaux B Colas P Emery S Kozanecki W Lancon E Lemaire MC Locci E Perez P Rander J Renardy JF Roussarie A Schuller JP Schwindling J Trabelsi A Vallage B Black SN Dann JH Johnson RP Kim HY Konstantinidis N Litke AM McNeil MA Taylor G Booth CN Cartwright S Combley F Lehto M Thompson LF Affholderbach K Bohrer A Brandt S Grupen C Misiejuk A Prange G Sieler U Giannini G Gobbo B Rothberg J Wasserbaech S Armstrong SR Elmer P Ferguson DPS Cao Y Gonzalez S Hayes OJ Hu H Jin S Kile J McNamara PA Nielsen J Orejudos W Pan YB Saadi Y Scott IJ Walsh J von Wimmersperg Toeller JH Wu SL Wu X Zobernig G RI ANTONELLI ANTONELLA/C 6238 2011 Jones Roger/H 5578 2011 Passalacqua Luca/F 5127 2011 Murtas Fabrizio/B 5729 2012 O'Shea Val/G 1279 2010 mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2000
Rivista:	PHYSICS LETTERS. SECTION B
Abstract:	In a data sample of about four million hadronic Z decays recorded with the ALEPH detector from 1991 to 1995. the B-s(0) --> (Ds()+Ds()()-) decay is observed, based on tagging the final state with two phi mesons in the same hemisphere. The D-s(()+) D-s(()-) final state is mostly CP even and corresponds to the short-lived B-s(0) mass eigenstate. The branching ratio of this decay is measured to be BR(B-s(0)(short) --> D-s(()+) D-s(()-)) = (23 +/- 10(-9)(+19))%. A measurement of the lifetime of the B-s(0)(short) gives 1.27 +/- 0.33 +/- 0.08 ps. The lifetime and branching ratio measurements provide two essentially independent methods of estimating the relative decay width difference Delta Gamma/Gamma in the B-s(0)-(B) over bar(s)(0) system, corresponding to an average value Delta Gamma/Gamma = (25+/-(21)(14))%. (C) 2000 Elsevier Science B.V. All rights reserved.
Handle:	http://hdl.handle.net/11384/4573
Appare nelle tipologie:	1.1 Articolo in rivista

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