Observation of the doubly strange b baryon Omegab-.

  title={Observation of the doubly strange b baryon Omegab-.},
  author={Victor Mukhamedovich Abazov and B. Abbott and Maris Abolins and Bannanje Sripath Acharya and Mark Raymond Adams and T. Adams and Ernest Aguil{\'o} and Mahsana Ahsan and Gennady Alexeev and Georgy Alkhazov and Andrew Alton and George Alverson and G. A. Alves and M. Anastasoaie and Lucian Stefan Ancu and Timothy R. Andeen and Bastien Andrieu and Meghan Anzelc and Masato Aoki and Yannick Arnoud and Mikhail Arov and M L Arthaud and Andrew Warren Askew and Barbro {\AA}sman and A C S Assis Jesus and Oleksiy Vladimirovich Atramentov and C. Avila and Fr{\'e}d{\'e}rique Badaud and L. Bagby and B. Yu. Baldin and Dmitry Vladimirovich Bandurin and Piyali Banerjee and S. Banerjee and Emanuela Barberis and A. F. Barfuss and Pedrame Bargassa and P. Baringer and J. L. Barreto and Joel F. Bartlett and Ursula Bassler and Daniel A. Bauer and S. Beale and A. Bean and Marcia Begalli and Michael Begel and Camille B{\'e}langer-Champagne and Leo Bellantoni and Angela Maria Bellavance and J. A. Benitez and Suman Bala Beri and Gregorio Bernardi and Ralf Patrick Bernhard and Iain Alexander Bertram and Marc Besançon and R. Beuselinck and V. A. Bezzubov and Pushpalatha C. Bhat and Vipin Bhatnagar and Catherine Biscarat and Gerald Charles Blazey and F. Blekman and Susan K. Blessing and Kenneth Bloom and Amber Boehnlein and Daniel Boline and T. Bolton and E. Boos and Guennadi Borissov and Tulika Bose and Andrew Brandt and Raymond Brock and Gustaaf Brooijmans and Alan Bross and D. A. Brown and Xuebing Bu and Norman Buchanan and D. Bruce Buchholz and Marc Buehler and Volker Buescher and Viacheslav Yevgenyevich Bunichev and Sergey Burdin and T. H. Burnett and Claus Peter Buszello and John M. Butler and Philippe Calfayan and S. Calvet and Jochen Cammin and E. Carrera and W. Carvalho and Brendan Cameron Kieran Casey and Heriberto Castilla-Valdez and Sayan K. Chakrabarti and Dhiman Chakraborty and K. M. Chan and A. Chandra and Elliott Cheu and Fr{\'e}d{\'e}ric Chevallier and David Cho and S. Choi and B. C. Choudhary and Leonard Steven Christofek and T. Christoudias and Selcuk Cihangir and Daniel Claes and Justace Clutter and Mark S. Cooke and William Edward Cooper and Marjorie D. Corcoran and F. Couderc and M. C. Cousinou and Sabine Cr{\'e}p{\'e}-Renaudin and Vesna Cuplov and David Cutts and Mikołaj {\'C}wiok and H. da Motta and A. Das and Gavin John Davies and Kaushik De and S. J. de Jong and E. De La Cruz-Burelo and Caroline Alves de Oliveira Martins and K. Devaughan and James D. Degenhardt and Frederic Deliot and Marcel Demarteau and Regina Demina and Dmitri Denisov and Sergei P. Denisov and Satish V. Desai and H. Thomas Diehl and M. Diesburg and A. Dominguez and H. Dong and Tyler Dorland and Anand Kumar Dubey and Lev Dudko and Laurent Duflot and Shashikant R. Dugad and Daniel Duggan and Arnaud Duperrin and J. Dyer and Alexander Dyshkant and Michael Eads and Daniel Edmunds and John Anthony Ellison and V. D. Elvira and Yuji Enari and Sarah Catherine Eno and P. F. Ermolov and Hal Evans and Alexey Evdokimov and Valeri N Evdokimov and Alexey V. Ferapontov and Thomas Ferbel and Frank Fiedler and Frank Filthaut and William H. Fisher and H. Eugene Fisk and Michael R. Fortner and Harald Fox and Shaohua Fu and Stuart Fuess and Thomas Gadfort and C. F. Galea and C. Garc{\'i}a and Ar{\'a}n Garc{\'i}a-Bellido and Vladimir Gavrilov and Pascal Gay and Walter M. Geist and Weigang Geng and C. E. Gerber and Yuri Gershtein and Dag Gillberg and George Ginther and N. P. Gollub and Bernardo J. A Gomez and A. G. Goussiou and Paul D. Grannis and Herbert Greenlee and Zeno Dixon Greenwood and E. M. Gregores and G{\'e}rald Grenier and Philippe Gris and J.-F. Grivaz and A. Grohsjean and S. Gr{\"u}nendahl and M. W. Gr{\"u}newald and F. Guo and J. Guo and G. Reales Guti{\'e}rrez and Phillip Gutierrez and Andy Haas and Nicholas John Hadley and Petra Haefner and S. Hagopian and Joseph Haley and I. Hall and R. E. Hall and L. Han and K. Harder and A. Harel and John Michael Hauptman and Jonathan Michael Hays and T. Hebbeker and David R. Hedin and J. Hegeman and A. P. Heinson and Ulrich Heintz and Carsten Hensel and Ken Herner and Gavin Hesketh and Michael D. Hildreth and R. Hirosky and John Hobbs and Bruce Hoeneisen and Hendrik Hoeth and Marc Hohlfeld and Shahadat Hossain and Peter Houben and Y. L. Hu and Zdenek Hubacek and Vladim{\'i}r Hynek and I. Iashvili and Robert Illingworth and Amando S. Ito and Shabnam Jabeen and Michel Jaffr{\'e} and S Jain and Karl Jakobs and Chad Jarvis and Richard L. Jesik and Kenneth Johns and C. A. Johnson and M. E. Johnson and D. Johnston and Alan M. Jonckheere and Patrik Jonsson and Aurelio Juste and Eric Kajfasz and J. M. Kalk and Dmitrii Karmanov and Penelope A. Kasper and Ioannis Katsanos and Daekwang Kau and Venkatesh S. Kaushik and R. Kehoe and S. Kermiche and Norik Khalatyan and Alexander Khanov and A. I. Kharchilava and Y. M. Kharzheev and David Khatidze and T. J. Kim and M. Kirby and Matthias E. W. Kirsch and B. Klima and Jatinder Mohan Kohli and E. V. Komissarov and Jens Peter Konrath and Alexander Kozelov and J. K. Kraus and Thorsten Kuhl and A. Kumar and Alexander Kupco and Tibor Kurca and Vadim Kuzmin and Jiř{\'i} Kvita and F Lacroix and D. Lam and Sabine Lammers and Greg Landsberg and Ph. Lebrun and W. M. Lee and Alexander Leflat and J{\'e}r{\'e}mie Lellouch and J. Li and Lei Li and Q. Z. Li and S. M. Lietti and J. K. Lim and J. G. Rochade Lima and D. Lincoln and J. T. Linnemann and V. V. Lipaev and Richard Lipton and Yichen Liu and Z. Liu and A. A. Lobodenko and Milos Lokajicek and Peter Love and Henry Lubatti and R. Luna and Adam Lyon and A. K. A. Maciel and Dennis S. Mackin and Ronald J. Madaras and Peter M{\"a}ttig and Carsten Magass and Alan Magerkurth and Prolay Kumar Mal and H. Brandao Malbouisson and S. Malik and Vladimir Malyshev and Y. Maravin and Brian Thomas Martin and R. L. Mccarthy and Alex Melnitchouk and L. Mendoza and P G Mercadante and Yu.P. Merekov and Mikhail M Merkin and K. W. Merritt and Andreas Bernhard Meyer and J. P. Meyer and Jovan Mitrevski and Rk K. Mommsen and Naba Kumar Mondal and R. W. Moore and Tania Moulik and G. S. Muanza and Michael Mulhearn and Olav Mundal and L. Mundim and Elemer Nagy and M. Naimuddin and Meenakshi Narain and N. A. Naumann and H. A. Neal and Juan Pablo Negret and P. V. Neustroev and H. Nilsen and Helio Nogima and Sergio Ferraz Novaes and Thomas Nunnemann and Vivian O’dell and Dugan O'Neil and G. Z. Obrant and Christophe Ochando and Dmitry Onoprienko and Jes{\'u}s Orduna and Nobuaki Oshima and Nicolas Osman and Jyotsna Osta and Roman Otec and G. Otero y Garzon and Mark Owen and Paul Padley and Monica Pangilinan and Neeti Parashar and S.-J. Park and S. K. Park and J. A. Parsons and R. Bruce Partridge and Nirmalya Parua and Abid Patwa and G. Pawloski and B Penning and Maxim A. Perfilov and K. Peters and Yvonne Peters and Pierre P{\'e}troff and Michele Petteni and Ricardo Piegaia and Jeff Piper and Marc-Andr{\'e} Pleier and Pedro L.M. Podesta-Lerma and Vladimir Podstavkov and Yu.A Pogorelov and Maria Elena Pol and P. A. Polozov and Bernard G. Pope and Alexey V. Popov and Christopher Thomas Potter and W.L. Prado Da Silva and Harrison B. Prosper and Serban Protopopescu and J. Qian and Arnulf Quadt and B. Quinn and A. Rakitine and Murilo Santana Rangel and K. Ranjan and Peter Ratoff and Peter Renkel and Phillip Rich and Julia Rieger and Michael Rijssenbeek and Isabelle Ripp-Baudot and Flera Rizatdinova and S. J. Q. Robinson and R. F. Rodrigues and Mandy Kathleen Rominsky and C Royon and A. M. Rozhdestvenski and Paul Rubinov and Randy C. Ruchti and Grigory Safronov and G. Sajot and A. Sanchez-Hernandez and Michiel P. Sanders and Batbold Sanghi and Graham Savage and Lee Sawyer and Tim Scanlon and Dorothee Schaile and R Dean Schamberger and Yu. A. Scheglov and H. Schellman and Thorsten Dirk Schliephake and Sarah Schlobohm and C. Schwanenberger and Ariel Schwartzman and Reinhard Schwienhorst and Jadranka Sekaric and Horst Severini and Elizaveta Shabalina and Mansoora Shamim and Viatcheslav Shary and A. A. Shchukin and Ram Krishen Shivpuri and Vanja Siccardi and Vladislav {\vS}im{\'a}k and V. Sirotenko and Patrick Skubic and Patrick Slattery and Dmitry A. Smirnov and Gregory R. Snow and J. Snow and Scott Snyder and S. S{\"o}ldner-Rembold and Lars Sonnenschein and Andr{\'e} Sopczak and Mark Sosebee and Karel Soustruznik and Barry S. Spurlock and Jan Stark and John T. Steele and Viatcheslav Stolin and Daniela Stoyanova and Jonas Strandberg and Sara Strandberg and Michael Allen Strang and Emanuel Strauss and Michael Strauss and R. Str{\"o}hmer and D Strom and Linda G. Stutte and S. Sumowidagdo and Peter Svoisky and A. Sznajder and P. Tamburello and Andres Jorge Tanasijczuk and Wendy Taylor and B. Tiller and F. Tissandier and M. Titov and Valeriy Tokmenin and Ingo Torchiani and Dmitri Tsybychev and Boris Tuchming and Christopher Tully and P. M. Tuts and Rahmi Unalan and L. N. Uvarov and Sergey Uvarov and S. Uzunyan and Brigitte Vachon and P. J. van den Berg and R. Van Kooten and W. M. van Leeuwen and Nikos Varelas and E. W. Varnes and Igor A. Vasilyev and Patrice Verdier and Leonid S Vertogradov and Yu. L. Vertogradova and M Verzocchi and D. Vilanova and Fr{\'e}d{\'e}ric Villeneuve-S{\'e}guier and P. Vint and Petr Vokac and Mikko Voutilainen and Rl Wagner and Horst D. Wahl and M. H.L.S. Wang and Jerzy B. Warchoł and Gordon T. Watts and Mitchell Wayne and Gustav Weber and M. S. Weber and L. Welty-Rieger and Andreas Wenger and Norbert Wermes and Matthew J. Wetstein and Andrew White and Daniel C Wicke and M. R. J. Williams and Grant W. Wilson and Stephen J. Wimpenny and Markus Wobisch},
  journal={Physical review letters},
  volume={101 23},
We report the observation of the doubly strange b baryon Omegab- in the decay channel Omegab(-)-->J/psiOmega-, with J/psi-->mu+mu(-) and Omega(-)-->LambdaK(-)-->(ppi-)K-, in pp collisions at sqrt[s]=1.96 TeV. Using approximately 1.3 fb(-1) of data collected with the D0 detector at the Fermilab Tevatron Collider, we observe 17.8+/-4.9(stat)+/-0.8(syst) Omegab- signal events at a mass of 6.165+/-0.010(stat)+/-0.013(syst) GeV. The significance of the observed signal is 5.4sigma, corresponding to a… 

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