Measurement of the Lambda b0 lifetime in Lambda b0-->J/psi Lambda 0 in pp collisions at square root s=1.96 TeV.

  title={Measurement of the Lambda b0 lifetime in Lambda b0-->J/psi Lambda 0 in pp collisions at square root s=1.96 TeV.},
  author={A. Abulencia and J. Adelman and T. Affolder and T. Akimoto and M. Albrow and D. Ambrose and S. Amerio and D. Amidei and A. Anastassov and K. Anikeev and A. Annovi and J. Anto{\vs} and M. Aoki and G. Apollinari and J. Arguin and T. Arisawa and A. Artikov and W. Ashmanskas and A. Attal and F. Azfar and P. Azzi-Bacchetta and P. Azzurri and N. Bacchetta and W. Badgett and A. Barbaro-Galtieri and V. Barnes and B. Barnett and S. Baroiant and V. Bartsch and G. Bauer and F. Bedeschi and S. Behari and S. Belforte and G. Bellettini and J. Bellinger and A. Belloni and D. Benjamin and A. Beretvas and J. Beringer and T. Berry and A. Bhatti and M. Binkley and D. Bisello and R. Blair and C. Blocker and B. Blumenfeld and A. Bocci and A. Bodek and V. Boisvert and G. Bolla and A. Bolshov and Daniela Bortoletto and J. Boudreau and A. Boveia and B. Brau and L. Brigliadori and C. Bromberg and E. Brubaker and J. Budagov and H. Budd and S. Budd and S. Budroni and K. Burkett and G. Busetto and P. Bussey and K. Byrum and S. Cabrera and M. Campanelli and M. Campbell and F. Canelli and A. Canepa and S. Carrillo and D. Carlsmith and R. Carosi and S. Carron and M. Casarsa and A. Castro and P. Catastini and D. Cauz and M. Cavalli-Sforza and A. Cerri and L. Cerrito and S. Chang and Y. Chen and M. Chertok and G. Chiarelli and G. Chlachidze and F. Chlebana and I. Cho and K. Cho and D. Chokheli and J. Chou and G. Choudalakis and S. Chuang and K. Chung and W. Chung and Y. Chung and M. Ciljak and C. Ciobanu and M. Ciocci and A. Clark and D. Clark and M. Coca and G. Compostella and M. Convery and J. Conway and B. Cooper and K. Copic and M. Cordelli and G. Cortiana and F. Crescioli and C. Cuenca Almenar and J. Cuevas and R. Culbertson and J. Cully and D. Cyr and S. Daronco and S. D'Auria and T. Davies and M. D'onofrio and D. Dagenhart and P. de Barbaro and S. De Cecco and A. Deisher and G. De Lentdecker and M. Dell'Orso and F. Delli Paoli and L. Demortier and J. Deng and M. Deninno and D. De Pedis and P. Derwent and G. di Giovanni and C. Dionisi and B. Di Ruzza and J. Dittmann and P. Dituro and C. D{\"o}rr and S. Donati and M. Doneg{\`a} and P. Dong and J. Donini and T. Dorigo and S. Dube and J. Efron and R. Erbacher and D. Errede and S. Errede and R. Eusebi and H. Fang and S. Farrington and I. Fedorko and W. Fedorko and R. Feild and M. Feindt and J. Fernandez and R. Field and G. Flanagan and A. Foland and S. Forrester and G. Foster and M. Franklin and J. Freeman and I. Furic and M. Gallinaro and J. Galyardt and J. Garc{\'i}a and F. Garberson and A. Garfinkel and C. Gay and H. Gerberich and D. Gerdes and S. Giagu and P. Giannetti and A. Gibson and K. Gibson and J. Gimmell and C. Ginsburg and N. Giokaris and M. Giordani and P. Giromini and M. Giunta and G. Giurgiu and V. Glagolev and D. Glenzinski and M. Gold and N. Goldschmidt and J. Goldstein and G. Gomez and G. Gomez-Ceballos and M. Goncharov and O. Gonz{\~a}lez and I. Gorelov and A. Goshaw and K. Goulianos and A. Gresele and M. Griffiths and S. Grinstein and C. Grosso-Pilcher and R. Group and U. Grundler and J. B. Guimar{\~a}es da Costa and Z. Gunay-Unalan and C. Haber and K. Hahn and S. Hahn and E. Halkiadakis and A. Hamilton and B. Han and J. Han and R. Handler and F. Happacher and K. Hara and M. Hare and S. Harper and R. Harr and R. Harris and M. Hartz and K. Hatakeyama and J. Hauser and A. Heijboer and B. Heinemann and J. Heinrich and C. Henderson and M. Herndon and J. Heuser and D. Hidas and C. Hill and D. Hirschbuehl and A. Hocker and A. Holloway and S. Hou and M. Houlden and S. Hsu and B. Huffman and R. Hughes and U. Husemann and J. Huston and J. Incandela and G. Introzzi and M. Iori and Y. Ishizawa and A. Ivanov and B. Iyutin and E. James and D. Jang and B. Jayatilaka and D. Jeans and H. Jensen and E. Jeon and S. Jindariani and M. Jones and K. Joo and S. Y. Jun and J. Jung and T. Junk and T. Kamon and P. Karchin and Y. Kato and Y. Kemp and R. Kephart and U. Kerzel and V. Khotilovich and B. Kilminster and D. H. Kim and H. Kim and J. Kim and M. Kim and S. Kim and Y. Kim and N. Kimura and L. Kirsch and S. Klimenko and M. Klute and B. Knuteson and B. Ko and K. Kondo and D. Kong and J. Konigsberg and A. Korytov and A. Kotwal and A. Kovalev and A. Kraan and J. Kraus and I. Kravchenko and M. Kreps and J. Kroll and N. Krumnack and M. Kruse and V. Krutelyov and T. Kubo and S. Kuhlmann and T. Kuhr and Y. Kusakabe and S. Kwang and A. Laasanen and L. Labarga and S. Lai and S. Lami and S. Lammel and M. Lancaster and R. Lander and K. Lannon and A. Lath and G. Latino and I. Lazzizzera and T. LeCompte and J. Lee and Y. Lee and S. Lee and R. Lef{\`e}vre and N. Leonardo and S. Leone and S. Levy and J. Lewis and C. Lin and M. Lindgren and E. Lipeles and T. Liss and A. Lister and D. Litvintsev and T. Liu and N. Lockyer and A. Loginov and M. Loreti and P. Loverre and R. Lu and D. Lucchesi and P. Lujan and P. Lukens and G. Lungu and L. Lyons and J. Lys and R. Lys{\'a}k and E. Lytken and P. Mack and D. Macqueen and R. Madrak and K. Maeshima and K. Makhoul and T. Maki and P. Maksimovic and S. Malde and G. Manca and F. Margaroli and R. Marginean and C. Marino and A. Martin and M. Martin and V. Martin and M. Mart{\'i}nez and T. Maruyama and P. Mastrandrea and T. Masubuchi and H. Matsunaga and M. Mattson and R. Mazini and P. Mazzanti and K. Mcfarland and P. McIntyre and R. McNulty and A. Mehta and P. Mehtala and S. Menzemer and A. Menzione and P. Merkel and C. Mesropian and A. Messina and T. Miao and N. Miladinovic and J. Miles and R. Miller and C. Mills and M. Milnik and A. Mitra and G. Mitselmakher and A. Miyamoto and S. Moed and N. Moggi and B. Mohr and R. Moore and M. Morello and P. M. Movilla Fern{\'a}ndez and J. M{\"u}lmenst{\"a}dt and A. Mukherjee and T. Muller and R. Mumford and P. Murat and J. Nachtman and A. Nagano and J. Naganoma and S. Nahn and I. Nakano and A. Napier and V. Necula and C. Neu and M. Neubauer and J. Nielsen and T. Nigmanov and L. Nodulman and O. Norniella and E. Nurse and S. Oh and Y. Oh and I. Oksuzian and T. Okusawa and R. Oldeman and R. Orava and K. Osterberg and C. Pagliarone and E. Palencia and V. Papadimitriou and A. Paramonov and B. Parks and S. Pashapour and J. Patrick and G. Pauletta and M. Paulini and C. Paus and D. Pellett and A. Penzo and T. Phillips and G. Piacentino and J. Piedra and L. Pinera and K. Pitts and C. Plager and L. Pondrom and X. Portell and O. Poukhov and N. Pounder and F. Prokoshin and A. Pronko and J. Proudfoot and F. Ptochos and G. Punzi and J. Pursley and J. Rademacker and A. Rahaman and N. Ranjan and S. Rappoccio and B. Reisert and V. Rekovic and P. Renton and M. Rescigno and S. Richter and F. Rimondi and L. Ristori and A. Robson and T. Rodrigo and E. Rogers and S. Rolli and R. Roser and M. Rossi and R. Rossin and A. Ruiz and J. Russ and V. Rusu and H. Saarikko and S. Sabik and A. Safonov and W. Sakumoto and G. Salamanna and O. Salt{\'o} and D. Saltzberg and C. Sanchez and L. Santi and S. Sarkar and L. Sartori and K. Sato and P. Savard and A. Savoy-Navarro and T. Scheidle and P. Schlabach and E. E. Schmidt and M. Schmidt and M. Schmitt and T. Schwarz and L. Scodellaro and A. Scott and A. Scribano and F. Scuri and A. Sedov and S. Seidel and Y. Seiya and A. Semenov and L. Sexton-Kennedy and A. Sfyrla and M. Shapiro and T. Shears and P. Shepard and D. Sherman and M. Shimojima and M. Shochet and Y. Shon and I. Shreyber and A. Sidoti},
  journal={Physical review letters},
  volume={98 12},
We report a measurement of the Lambda b0 lifetime in the exclusive decay Lambda b0-->J/psi Lambda 0 in pp collisions at square root s=1.96 TeV using an integrated luminosity of 1.0 fb-1 of data collected by the CDF II detector at the Fermilab Tevatron. Using fully reconstructed decays, we measure tau(Lambda b0)=1.593(-0.078)(+0.083)(stat)+/-0.033(syst) ps. This is the single most precise measurement of tau(Lambda b0) and is 3.2sigma higher than the current world average. 
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