LHcb CollaborationAaij, R.Adeva, B.Adinolfi, M.Ajaltouni, Z.Akar, S.Albrecht, J.Alessio, F.Alexander, M.Ali, S.Alkhazov, G.Cartelle, P. AlvarezAmato, S.Amerio, S.Amhis, Y.An, L.Anderlini, L.Andreassi, G.Andreotti, M.Andrews, J. E.Appleby, R. B.Gutierrez, O. AquinesArchilli, F.D'Argent, P.Romeu, J. ArnauArtamonov, A.Artuso, M.Aslanides, E.Auriemma, G.Baalouch, M.Babuschkin, I.Bachmann, S.Back, J. J.Badalov, A.Baesso, C.Baldini, W.Barlow, R. J.Barschel, C.Barsuk, S.Barter, W.Batozskaya, V.Batsukh, B.Battista, V.Bay, A.Beaucourt, L.Beddow, J.Bedeschi, F.Bediaga, I.Bel, L. J.Bellee, V.Belloli, N.Belous, K.Belyaev, I.Ben-Haim, E.Bencivenni, G.Benson, S.Benton, J.Berezhnoy, A.Bernet, R.Bertolin, A.Betti, F.Bettler, M. -O.Van Beuzekom, M.Bifani, S.Billoir, P.Bird, T.Birnkraut, A.Bitadze, A.Bizzeti, A.Blake, T.Blanc, F.Blouw, J.Blusk, S.Bocci, V.Boettcher, T.Bondar, A.Bondar, N.Bonivento, W.Borgheresi, A.Borghi, S.Borisyak, M.Borsato, M.Bossu, F.Boubdir, M.Bowcock, T. J. V.Bowen, E.Bozzi, C.Braun, S.Britsch, M.Britton, T.Brodzicka, J.Buchanan, E.Burr, C.Bursche, A.Buytaert, J.Cadeddu, S.Calabrese, R.Calvi, M.Calvo Gomez, M.Campana, P.Perez, D. CamporaCapriotti, L.Carbone, A.Carboni, G.Cardinale, R.Cardini, A.Carniti, P.Carson, L.Carvalho Akiba, K.Casse, G.Cassina, L.Garcia, L. CastilloCattaneo, M.Cauet, Ch.Cavallero, G.Cenci, R.Charles, M.Charpentier, Ph.Chatzikonstantinidis, G.Chefdeville, M.Chen, S.Cheung, S. -F.Chobanova, V.Chrzaszcz, M.Cid Vidal, X.Ciezarek, G.Clarke, P. E. L.Clemencic, M.Cliff, H. V.Closier, J.Coco, V.Cogan, J.Cogneras, E.Cogoni, V.Cojocariu, L.Collazuol, G.Collins, P.Comerma-Montells, A.Contu, A.Cook, A.Coquereau, S.Corti, G.Corvo, M.Sobral, C. M. CostaCouturier, B.Cowan, G. A.Craik, D. C.Crocombe, A.Cruz Torres, M.Cunliffe, S.Currie, R.D'Ambrosio, C.Dall'Occo, E.Dalseno, J.David, P. N. Y.Davis, A.De Aguiar Francisco, O.De Bruyn, K.De Capua, S.De Cian, M.De Miranda, J. M.De Paula, L.De Serio, M.De Simone, P.Dean, C. -T.Decamp, D.Deckenhoff, M.Del Buono, L.Demmer, M.Derkach, D.Deschamps, O.Dettori, F.Dey, B.Di Canto, A.Dijkstra, H.Dordei, F.Dorigo, M.Dosil Suarez, A.Dovbnya, A.Dreimanis, K.Dufour, L.Dujany, G.Dungs, K.Durante, P.Dzhelyadin, R.Dziurda, A.Dzyuba, A.Deleage, N.Easo, S.Egede, U.Egorychev, V.Eidelman, S.Eisenhardt, S.Eitschberger, U.Ekelhof, R.Eklund, L.Elsasser, Ch.Ely, S.Esen, S.Evans, H. M.Evans, T.Falabella, A.Farley, N.Farry, S.Fay, R.Fazzini, D.Ferguson, D.Fernandez Albor, V.Ferrari, F.Ferreira Rodrigues, F.Ferro-Luzzi, M.Filippov, S.Fini, R. A.Fiore, M.Fiorini, M.Firlej, M.Fitzpatrick, C.Fiutowski, T.Fleuret, F.Fohl, K.Fontana, M.Fontanelli, F.Forshaw, D. C.Forty, R.Lima, V. FrancoFrank, M.Frei, C.Fu, J.Furfaro, E.Farber, C.Gallas Torreira, A.Galli, D.Gallorini, S.Gambetta, S.Gandelman, M.Gandini, P.Gao, Y.Garcia Pardinas, J.Tico, J. GarraGarrido, L.Garsed, P. J.Gascon, D.Gaspar, C.Gavardi, L.Gazzoni, G.Gerick, D.Gersabeck, E.Gersabeck, M.Gershon, T.Ghez, Ph.Giani, S.Gibson, V.Gillies, E.Girard, O. G.Giubega, L.Gizdov, K.Gligorov, V. V.Golubkov, D.Golutvin, A.Gomes, A.Gorelov, I. V.Gotti, C.Gandara, M. GrabalosaGraciani Diaz, R.Cardoso, L. A. GranadoGrauges, E.Graverini, E.Graziani, G.Grecu, A.Griffith, P.Grillo, L.Cazon, B. R. GrubergGruenberg, O.Gushchin, E.Guz, Yu.Gys, T.Gobel, C.Hadavizadeh, T.Hadjivasiliou, C.Haefeli, G.Haen, C.Haines, S. C.Hall, S.Hamilton, B.Han, X.Hansmann-Menzemer, S.Harnew, N.Harnew, S. T.Harrison, J.Hatch, M.He, J.Head, T.Heister, A.Hennessy, K.Henrard, P.Henry, L.Hernando Morata, J. A.Van Herwijnen, E.Hess, M.Hicheur, A.Hill, D.Hombach, C.Hulsbergen, W.Humair, T.Hushchyn, M.Hussain, N.Hutchcroft, D.Idzik, M.Ilten, P.Jacobsson, R.Jaeger, A.Jalocha, J.Jans, E.Jawahery, A.John, M.Johnson, D.Jones, C. R.Joram, C.Jost, B.Jurik, N.Kandybei, S.Kanso, W.Karacson, M.Kariuki, J. M.Karodia, S.Kecke, M.Kelsey, M.Kenyon, I. R.Kenzie, M.Ketel, T.Khairullin, E.Khanji, B.Khurewathanakul, C.Kirn, T.Klaver, S.Klimaszewski, K.Koliiev, S.Kolpin, M.Komarov, I.Koopman, R. F.Koppenburg, P.Kozachuk, A.Kozeiha, M.Kravchuk, L.Kreplin, K.Kreps, M.Krokovny, P.Kruse, F.Krzemien, W.Kucewicz, W.Kucharczyk, M.Kudryavtsev, V.Kuonen, A. K.Kurek, K.Kvaratskheliya, T.Lacarrere, D.Lafferty, G.Lai, A.Lambert, D.Lanfranchi, G.Langenbruch, C.Langhans, B.Latham, T.Lazzeroni, C.Le Gac, R.Van Leerdam, J.Lees, J. -P.Leflat, A.Lefrancois, J.Lefevre, R.Lemaitre, F.Lemos Cid, E.Leroy, O.Lesiak, T.Leverington, B.Li, Y.Likhomanenko, T.Lindner, R.Linn, C.Lionetto, F.Liu, B.Liu, X.Loh, D.Longstaff, I.Lopes, J. H.Lucchesi, D.Lucio Martinez, M.Luo, H.Lupato, A.Luppi, E.Lupton, O.Lusiani, A.Lyu, X.Machefert, F.Maciuc, F.Maev, O.Maguire, K.Malde, S.Malinin, A.Maltsev, T.Manca, G.Mancinelli, G.Manning, P.Maratas, J.Marchand, J. F.Marconi, U.Marin Benito, C.Marino, P.Marks, J.Martellotti, G.Martin, M.Martinelli, M.Martinez Santos, D.Martinez Vidal, F.Martins Tostes, D.Massacrier, L. M.Massafferri, A.Matev, R.Mathad, A.Mathe, Z.Matteuzzi, C.Mauri, A.Maurin, B.Mazurov, A.Mccann, M.Mccarthy, J.Mcnab, A.Mcnulty, R.Meadows, B.Meier, F.Meissner, M.Melnychuk, D.Merk, M.Merli, A.Michielin, E.Milanes, D. A.Minard, M. -N.Mitzel, D. S.Molina Rodriguez, J.Monroy, I. A.Monteil, S.Morandin, M.Morawski, P.Morda, A.Morello, M. J.Moron, J.Morris, A. B.Mountain, R.Muheim, F.Mulder, M.Mussini, M.Muller, D.Mueller, J.Muller, K.Mueller, V.Naik, P.Nakada, T.Nandakumar, R.Nandi, A.Nasteva, I.Needham, M.Neri, N.Neubert, S.Neufeld, N.Neuner, M.Nguyen, A. D.Nguyen-Mau, C.Nieswand, S.Niet, R.Nikitin, N.Nikodem, T.Novoselov, A.O'Hanlon, D. P.Oblakowska-Mucha, A.Obraztsov, V.Ogilvy, S.Oldeman, R.Onderwater, C. J. G.Otalora Goicochea, J. M.Otto, A.Owen, P.Oyanguren, A.Pais, P. R.Palano, A.Palombo, F.Palutan, M.Panman, J.Papanestis, A.Pappagallo, M.Pappalardo, L. L.Pappenheimer, C.Parker, W.Parkes, C.Passaleva, G.Pastore, A.Patel, G. D.Patel, M.Patrignani, C.Pearce, A.Pellegrino, A.Penso, G.Altarelli, M. PepePerazzini, S.Perret, P.Pescatore, L.Petridis, K.Petrolini, A.Petrov, A.Petruzzo, M.Picatoste Olloqui, E.Pietrzyk, B.Pikies, M.Pinci, D.Pistone, A.Piucci, A.Playfer, S.Plocasasus, M.Poikela, T.Polci, F.Poluektov, A.Polyakov, I.Polycarpo, E.Pomery, G. J.Popov, A.Popov, D.Popovici, B.Potterat, C.Price, E.Price, J. D.Prisciandaro, J.Pritchard, A.Prouve, C.Pugatch, V.Navarro, A. PuigPunzi, G.Qian, W.Quagliani, R.Rachwal, B.Rademacker, J. H.Rama, M.Ramos Pernas, M.Rangel, M. S.Raniuk, I.Raven, G.Redi, F.Reichert, S.Dos Reis, A. C.Remon Alepuz, C.Renaudin, V.Ricciardi, S.Richards, S.Rihl, M.Rinnert, K.Rives Molina, V.Robbe, P.Rodrigues, A. B.Rodrigues, E.Rodriguez Lopez, J. A.Perez, P. RodriguezRogozhnikov, A.Roiser, S.Romanovskiy, V.Romero Vidal, A.Ronayne, J. W.Rotondo, M.Rudolph, M. S.Ruf, T.Ruiz Valls, P.Saborido Silva, J. J.Sadykhov, E.Sagidova, N.Saitta, B.Salustino Guimaraes, V.Sanchez Mayordomo, C.Sanmartin Sedes, B.Santacesaria, R.Santamarina Rios, C.Santimaria, M.Santovetti, E.Sarti, A.Satriano, C.Satta, A.Saunders, D. M.Savrina, D.Schael, S.Schellenberg, M.Schiller, M.Schindler, H.Schlupp, M.Schmelling, M.Schmelzer, T.Schmidt, B.Schneider, O.Schopper, A.Schubert, K.Schubiger, M.Schune, M. -H.Schwemmer, R.Sciascia, B.Sciubba, A.Semennikov, A.Sergi, A.Serra, N.Serrano, J.Sestini, L.Seyfert, P.Shapkin, M.Shapoval, I.Shcheglov, Y.Shears, T.Shekhtman, L.Shevchenko, V.Shires, A.Siddi, B. G.Coutinho, R. SilvaSilva De Oliveira, L.Simi, G.Simone, S.Sirendi, M.Skidmore, N.Skwarnicki, T.Smith, E.Smith, I. T.Smith, J.Smith, M.Snoek, H.Sokoloff, M. D.Soler, F. J. P.Souza, D.Souza De Paula, B.Spaan, B.Spradlin, P.Sridharan, S.Stagni, F.Stahl, M.Stahl, S.Stefko, P.Stefkova, S.Steinkamp, O.Stenyakin, O.Stevenson, S.Stoica, S.Stone, S.Storaci, B.Stracka, S.Straticiuc, M.Straumann, U.Sun, L.Sutcliffe, W.Swientek, K.Syropoulos, V.Szczekowski, M.Szumlak, T.T'Jampens, S.Tayduganov, A.Tekampe, T.Tellarini, G.Teubert, F.Thomas, C.Thomas, E.Van Tilburg, J.Tisserand, V.Tobin, M.Tolk, S.Tomassetti, L.Tonelli, D.Topp-Joergensen, S.Toriello, F.Tournefier, E.Tourneur, S.Trabelsi, K.Traill, M.Tran, M. T.Tresch, M.Trisovic, A.Tsaregorodtsev, A.Tsopelas, P.Tully, A.Tuning, N.Ukleja, A.Ustyuzhanin, A.Uwer, U.Vacca, C.Vagnoni, V.Valat, S.Valenti, G.Vallier, A.Gomez, R. VazquezVazquez Regueiro, P.Vecchi, S.Van Veghel, M.Velthuis, J. J.Veltri, M.Veneziano, G.Venkateswaran, A.Vernet, M.Vesterinen, M.Viaud, B.Vieira, D.Vieites Diaz, M.Vilasis-Cardona, X.Volkov, V.Vollhardt, A.Voneki, B.Voong, D.Vorobyev, A.Vorobyev, V.Voss, C.De Vries, J. A.Vazquez Sierra, C.Waldi, R.Wallace, C.Wallace, R.Walsh, J.Wang, J.Ward, D. R.Wark, H. M.Watson, N. K.Websdale, D.Weiden, A.Whitehead, M.Wicht, J.Wilkinson, G.Wilkinson, M.Williams, M.Williams, M. P.Williams, M.Williams, T.Wilson, F. F.Wimberley, J.Wishahi, J.Wislicki, W.Witek, M.Wormser, G.Wotton, S. A.Wraight, K.Wright, S.Wyllie, K.Xie, Y.Xing, Z.Xu, Z.Yang, Z.Yin, H.Yu, J.Yuan, X.Yushchenko, O.Zangoli, M.Zarebski, K. A.Zavertyaev, M.Zhang, L.Zhang, Y.Zhang, Y.Zhelezov, A.Zheng, Y.Zhokhov, A.Zhukov, V.Zucchelli, S.2017-03-272017-03-272017-03-27201610.1016/j.physletb.2016.10.006https://infoscience.epfl.ch/handle/20.500.14299/136019WOS:000388473700067Using a data set corresponding to an integrated luminosity of 3fb(-1), collected by the LHCb experiment in ppcollisions at centre-of-mass energies of 7 and 8TeV, the effective lifetime in the B-s(0) -> J/Psi eta decay mode, teff, is measured to be tau(eff) = 1.479 +/- 0.034 (stat)+/- 0.011 (syst) ps. Assuming CP conservation, tau(eff) corresponds to the lifetime of the light B-s(0) mass eigenstate. This is the first measurement of the effective lifetime in this decay mode. (C) 2016 The Author. Published by Elsevier B.V.text::journal::journal article::research article