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Precision measurement of the ratio of the $Λ^0_b$ to $\overline{B}^0$ lifetimes
Authors :
collaboration, L Aaij, R Adeva, B Adinolfi, M Affolder, A Ajaltouni, Z Albrecht, J Alessio, F Alexander, M Ali, S Alkhazov, G Cartelle, PA Jr, AAA Amato, S Amerio, S Amhis, Y Anderlini, L Anderson, J Andreassen, R Andreotti, M Andrews, JE Appleby, RB Gutierrez, OA Archilli, F Artamonov, A Artuso, M Aslanides, E Auriemma, G Baalouch, M Bachmann, S Back, JJ Badalov, A Balagura, V Baldini, W Barlow, RJ Barschel, C Barsuk, S Barter, W Batozskaya, V Bauer, T Bay, A Beddow, J Bedeschi, F Bediaga, I Belogurov, S Belous, K Belyaev, I Ben-Haim, E Bencivenni, G Benson, S Benton, J Berezhnoy, A Bernet, R Bettler, M-O Beuzekom, MV Bien, A Bifani, S Bird, T Bizzeti, A ornstad, PMB Blake, T Blanc, F Blouw, J Blusk, S Bocci, V Bondar, A Bondar, N Bonivento, W Borghi, S Borgia, A Borsato, M Bowcock, TJV Bowen, E Bozzi, C Brambach, T Brand, JVD Bressieux, J Brett, D Britsch, M Britton, T Brook, NH Brown, H Bursche, A Busetto, G Buytaert, J Cadeddu, S Calabrese, R Callot, O Calvi, M Gomez, MC Camboni, A Campana, P Perez, DC Caponio, F Carbone, A Carboni, G Cardinale, R Cardini, A Carranza-Mejia, H Carson, L Akiba, KC Casse, G Cassina, L Garcia, LC Cattaneo, M Cauet, C Cenci, R Charles, M Charpentier, P Cheung, S-F Chiapolini, N Chrzaszcz, M Ciba, K Vidal, XC Ciezarek, G Clarke, PEL Clemencic, M Cliff, HV Closier, J Coca, C Coco, V Cogan, J Cogneras, E Collins, P Comerma-Montells, A Contu, A Cook, A Coombes, M Coquereau, S Corti, G Counts, I Couturier, B Cowan, GA Craik, DC Torres, MC Cunliffe, S Currie, R D'Ambrosio, C Dalseno, J David, P David, PNY Davis, A Bonis, ID Bruyn, KD Capua, SD Cian, MD Miranda, JMD Paula, LD Silva, WD Simone, PD Decamp, D Deckenhoff, M Buono, LD Déléage, N Derkach, D Deschamps, O Dettori, F Canto, AD Dijkstra, H Donleavy, S Dordei, F Dorigo, M Dorosz, P Suárez, AD Dossett, D Dovbnya, A Dupertuis, F Durante, P Dzhelyadin, R Dziurda, A Dzyuba, A Easo, S Egede, U Egorychev, V Eidelman, S Eisenhardt, S Eitschberger, U Ekelhof, R Eklund, L Rifai, IE Elsasser, C Esen, S Falabella, A Färber, C Farinelli, C Farry, S Ferguson, D Albor, VF Rodrigues, FF Ferro-Luzzi, M Filippov, S Fiore, M Fiorini, M Fitzpatrick, C Fontana, M Fontanelli, F Forty, R Francisco, O Frank, M Frei, C Frosini, M Fu, J Furfaro, E Torreira, AG Galli, D Gambetta, S Gandelman, M Gandini, P Gao, Y Garofoli, J Tico, JG Garrido, L Gaspar, C Gauld, R Gavardi, L Gersabeck, E Gersabeck, M Gershon, T Ghez, P Gianelle, A Giani', S Gibson, V Giubega, L Gligorov, VV Göbel, C Golubkov, D Golutvin, A Gomes, A Gordon, H Gándara, MG Diaz, RG Cardoso, LAG Graugés, E Graziani, G Grecu, A Greening, E Gregson, S Griffith, P Grillo, L Grünberg, O Gui, B Gushchin, E Guz, Y Gys, T Hadjivasiliou, C Haefeli, G Haen, C Hafkenscheid, TW Haines, SC Hall, S Hamilton, B Hampson, T Hansmann-Menzemer, S Harnew, N Harnew, ST Harrison, J Hartmann, T He, J Head, T Heijne, V Hennessy, K Henrard, P Henry, L Morata, JAH Herwijnen, EV Heß, M Hicheur, A Hill, D Hoballah, M Hombach, C Hulsbergen, W Hunt, P Hussain, N Hutchcroft, D Hynds, D Idzik, M Ilten, P Jacobsson, R Jaeger, A Jans, E Jaton, P Jawahery, A Jing, F John, M Johnson, D Jones, CR Joram, C Jost, B Jurik, N Kaballo, M Kandybei, S Kanso, W Karacson, M Karbach, TM Kelsey, M Kenyon, IR Ketel, T Khanji, B Khurewathanakul, C Klaver, S Kochebina, O Komarov, I Koopman, RF Koppenburg, P Korolev, M Kozlinskiy, A Kravchuk, L Kreplin, K Kreps, M Krocker, G Krokovny, P Kruse, F Kucharczyk, M Kudryavtsev, V Kurek, K Kvaratskheliya, T Thi, VNL Lacarrere, D Lafferty, G Lai, A Lambert, D Lambert, RW Lanciotti, E Lanfranchi, G Langenbruch, C Langhans, B Latham, T Lazzeroni, C Gac, RL Leerdam, JV Lees, J-P Lefèvre, R Leflat, A Lefrançois, J Leo, S Leroy, O Lesiak, T Leverington, B Li, Y Liles, M Lindner, R Linn, C Lionetto, F Liu, B Liu, G Lohn, S Longstaff, I Lopes, JH Lopez-March, N Lowdon, P Lu, H Lucchesi, D Luo, H Luppi, E Lupton, O Machefert, F Machikhiliyan, IV Maciuc, F Maev, O Malde, S Manca, G Mancinelli, G Manzali, M Maratas, J Marconi, U Benito, CM Marino, P Märki, R Marks, J Martellotti, G Martens, A Sánchez, AM Martinelli, M Santos, DM Vidal, FM Tostes, DM Massafferri, A Matev, R Mathe, Z Matteuzzi, C Mazurov, A McCann, M McCarthy, J McNab, A McNulty, R McSkelly, B Meadows, B Meier, F Meissner, M Merk, M Milanes, DA Minard, M-N Rodriguez, JM Monteil, S Moran, D Morandin, M Morawski, P Mordà, A Morello, MJ Mountain, R Muheim, F Müller, K Muresan, R Muryn, B Muster, B Naik, P Nakada, T Nandakumar, R Nasteva, I Needham, M Neri, N Neubert, S Neufeld, N Nguyen, AD Nguyen, TD Nguyen-Mau, C Nicol, M Niess, V Niet, R Nikitin, N Nikodem, T Novoselov, A Oblakowska-Mucha, A Obraztsov, V Oggero, S Ogilvy, S Okhrimenko, O Oldeman, R Onderwater, G Orlandea, M Goicochea, JMO Owen, P Oyanguren, A Pal, BK Palano, A Palombo, F Palutan, M Panman, J Papanestis, A Pappagallo, M Pappalardo, L Parkes, C Parkinson, CJ Passaleva, G Patel, GD Patel, M Patrignani, C Pavel-Nicorescu, C Alvarez, AP Pearce, A Pellegrino, A Altarelli, MP Perazzini, S Trigo, EP Perret, P Perrin-Terrin, M Pescatore, L Pesen, E Pessina, G Petridis, K Petrolini, A Olloqui, EP Pietrzyk, B Pilař, T Pinci, D Pistone, A Playfer, S Casasus, MP Polci, F Poluektov, A Polycarpo, E Popov, A Popov, D Popovici, B Potterat, C Powell, A Prisciandaro, J Pritchard, A Prouve, C Pugatch, V Navarro, AP Punzi, G Qian, W Rachwal, B Rademacker, JH Rakotomiaramanana, B Rama, M Rangel, MS Raniuk, I Rauschmayr, N Raven, G Reichert, S Reid, MM Reis, ACD Ricciardi, S Richards, A Rinnert, K Molina, VR Romero, DAR Robbe, P Roberts, DA Rodrigues, AB Rodrigues, E Perez, PR Roiser, S Romanovsky, V Vidal, AR Rotondo, M Rouvinet, J Ruf, T Ruffini, F Ruiz, H Valls, PR Sabatino, G Silva, JJS Sagidova, N Sail, P Saitta, B Guimaraes, VS Sedes, BS Santacesaria, R Rios, CS Santovetti, E Sapunov, M Sarti, A Satriano, C Satta, A Savrie, M Savrina, D Schiller, M Schindler, H Schlupp, M Schmelling, M Schmidt, B Schneider, O Schopper, A Schune, M-H Schwemmer, R Sciascia, B Sciubba, A Seco, M Semennikov, A Senderowska, K Sepp, I Serra, N Serrano, J Seyfert, P Shapkin, M Shapoval, I Shcheglov, Y Shears, T Shekhtman, L Shevchenko, O Shevchenko, V Shires, A Coutinho, RS Simi, G Sirendi, M Skidmore, N Skwarnicki, T Smith, NA Smith, E Smith, J Smith, M Snoek, H Sokoloff, MD Soler, FJP Soomro, F Souza, D Paula, BSD Spaan, B Sparkes, A Spinella, F Spradlin, P Stagni, F Stahl, S Steinkamp, O Stevenson, S Stoica, S Stone, S Storaci, B Stracka, S Straticiuc, M Straumann, U Stroili, R Subbiah, VK Sun, L Sutcliffe, W Swientek, S Syropoulos, V Szczekowski, M Szczypka, P Szilard, D Szumlak, T T'Jampens, S Teklishyn, M Tellarini, G Teodorescu, E Teubert, F Thomas, C Thomas, E Tilburg, JV Tisserand, V Tobin, M Tolk, S Tomassetti, L Tonelli, D Topp-Joergensen, S Torr, N Tournefier, E Tourneur, S Tran, MT Tresch, M Tsaregorodtsev, A Tsopelas, P Tuning, N Garcia, MU Ukleja, A Ustyuzhanin, A Uwer, U Vagnoni, V Valenti, G Vallier, A Gomez, RV Regueiro, PV Sierra, CV Vecchi, S Velthuis, JJ Veltri, M Veneziano, G Vesterinen, M Viaud, B Vieira, D Vilasis-Cardona, X Vollhardt, A Volyanskyy, D Voong, D Vorobyev, A Vorobyev, V Voß, C Voss, H Vries, JAD Waldi, R Wallace, C Wallace, R Wandernoth, S Wang, J Ward, DR Watson, NK Webber, AD Websdale, D Whitehead, M Wicht, J Wiechczynski, J Wiedner, D Wilkinson, G Williams, MP Williams, M Wilson, FF Wimberley, J Wishahi, J Wislicki, W Witek, M Wormser, G Wotton, SA Wright, S Wu, S Wyllie, K Xie, Y Xing, Z Yang, Z Yuan, X Yushchenko, O Zangoli, M Zavertyaev, M Zhang, F Zhang, L Zhang, WC Zhang, Y Zhelezov, A Zhokhov, A Zhong, L Zvyagin, A
Source :
R. Aaij et. al, (LHCb collaboration), Physics Letters B, 734, (2014) 122 . 734
Publication Year :
2014
Abstract
The LHCb measurement of the lifetime ratio of the $\Lambda^0_b$ to the $\overline{B}^0$ meson is updated using data corresponding to an integrated luminosity of 3.0 fb$^{-1}$ collected using 7 and 8 TeV centre-of-mass energy $pp$ collisions at the LHC. The decay modes used are $\overline{B}^0\to J/\psi p K^-$ and $\overline{B}^0\to J/\psi \pi^+ K^-$, where the $\pi^+K^-$ mass is consistent with that of the $\overline{K}^{*0}(892)$ meson. The lifetime ratio is determined with unprecedented precision to be $0.974\pm0.006\pm0.004$, where the first uncertainty is statistical and the second systematic. This result is in agreement with original theoretical predictions based on the heavy quark expansion. Using the current world average of the $\overline{B}^0$ lifetime, the $\Lambda^0_b$ lifetime is found to be $1.479 \pm 0.009 \pm 0.010$ ps.
Details
ISSN :
03702693
Volume :
734
Database :
OpenAIRE
Journal :
R. Aaij et. al, (LHCb collaboration), Physics Letters B, 734, (2014) 122
Accession number :
edsair.od......1064..3b21f90f1cce9b5d642d334c1eee2b3a