Evidence for a B_{s}^{0}π^{±} State.

@article{Abazov2016EvidenceFA,
  title={Evidence for a B\_\{s\}^\{0\}$\pi$^\{±\} State.},
  author={Victor Mukhamedovich Abazov and B. Abbott and Bobby Samir Acharya and Mark Raymond Adams and Todd Adams and James P Agnew and G. D. Alexeev and Georgy Alkhazov and Andrew Alton and Andrew Askew and Scott Atkins and Kamil Augsten and Volodymyr Aushev and Yegor Aushev and Carlos Avila and Fr{\'e}d{\'e}rique Badaud and L. Bagby and B. Yu. Baldin and Dmitry Vladimirovich Bandurin and S. Banerjee and Emanuela Barberis and Philip Baringer and Joel F. Bartlett and Ursula Bassler and Victor E. Bazterra and Alice Bean and Marcia Begalli and Leo Bellantoni and Suman Bala Beri and Gregorio Bernardi and Ralf Patrick Bernhard and Iain Alexander Bertram and Marc Besançon and R. Beuselinck and Pushpalatha C. Bhat and Sudeep Bhatia and Vipin Bhatnagar and Gerald Charles Blazey and Susan K. Blessing and Kenneth Bloom and Amber Boehnlein and Daniel Boline and Edward E. Boos and Guennadi Borissov and Maryna Borysova and Andrew Brandt and Oleg Brandt and Michelle B. Brochmann and Raymond Brock and Alan D. Bross and D. R. Brown and Xuebing Bu and Marc Buehler and Volker Buescher and Viacheslav Yevgenyevich Bunichev and Sergey Burdin and Claus Peter Buszello and Enrique Camacho-P{\'e}rez and B. C. K. Casey and Heriberto Castilla-Valdez and Seth Caughron and Sayan K. Chakrabarti and K. M. Chan and A. Chandra and Emilien Chapon and G Chen and S. W. Cho and S. Choi and Brajesh C. Choudhary and Selcuk Cihangir and Daniel Claes and Justace Clutter and Mark S. Cooke and William Edward Cooper and Marjorie D. Corcoran and Fabrice Couderc and M. C. Cousinou and Jakub C{\'u}th and David Cutts and A. Das and Gavin Davies and S. J. de Jong and Eduard De La Cruz-Burelo and Frederic Deliot and Regina Demina and Dmitri Denisov and Sergei P. Denisov and Satish V. Desai and Cecile Deterre and K. Devaughan and H. Thomas Diehl and M. Diesburg and P. F. Ding and A. Dominguez and Alexey Drutskoy and Abhinav Dubey and Lev Dudko and Arnaud Duperrin and Suneel Dutt and Michael Eads and Daniel Edmunds and John Anthony Ellison and Victor Daniel Elvira and Yuji Enari and Hal Evans and Alexey Evdokimov and Valeri N Evdokimov and A. Faure and Lei Feng and Thomas Ferbel and Frank Fiedler and Frank Filthaut and Wade Cameron Fisher and H. Eugene Fisk and Michael R. Fortner and Harald Fox and Jiř{\'i} Franc and Stuart Fuess and Peter H. Garbincius and Aran Garcia-Bellido and J. A. Garc{\'i}a-Gonz{\'a}lez and Vladimir Gavrilov and Weigang Geng and Cecilia Elena Gerber and Yuri Gershtein and George Ginther and Olga Gogota and Georgy Golovanov and Paul D. Grannis and Sebastien Greder and Herbert Greenlee and G{\'e}rald Grenier and Ph. Gris and J.-F. Grivaz and Alexander Grohsjean and Stefan Gr{\"u}nendahl and M. W. Gr{\"u}newald and Thibault Guillemin and G. Reales Guti{\'e}rrez and Phillip Gutierrez and Joseph Haley and L. Han and K. Harder and A. Harel and John Michael Hauptman and Jonathan Michael Hays and Timothy Daniel Head and Thomas Hebbeker and David R. Hedin and Hisham E. Hegab and A. P. Heinson and Ulrich Heintz and Carsten Hensel and I. Heredia-De La Cruz and Ken Herner and Gavin Hesketh and Michael D. Hildreth and Robert Hirosky and T. Hoang and John Hobbs and Bruce Hoeneisen and Julie Managan Hogan and Marc Hohlfeld and Jenny Holzbauer and Ian James Howley and Zdenek Hubacek and Vladim{\'i}r Hynek and Ia Iashvili and Yuriy Ilchenko and Robert Illingworth and Albert Shunji Ito and Shabnam Jabeen and Michel Jaffr{\'e} and Ayesh Jayasinghe and Min Soo Jeong and Richard L. Jesik and P. Jiang and Kenneth Johns and E. Johnson and M. E. Johnson and Alan M. Jonckheere and Patrik Jonsson and Jyoti Joshi and Andreas Werner Jung and A. Juste and Eric Kajfasz and Dmitrii Karmanov and Ioannis Katsanos and Manjit Kaur and Robert Kehoe and S. Kermiche and Norik Khalatyan and Alexander Khanov and A. I. Kharchilava and Yuri N Kharzheev and Ivan Lvovich Kiselevich and Jatinder Mohan Kohli and Alexander Kozelov and J. K. Kraus and A. Kumar and Alexander Kupco and Tibor Kurca and Vadim Kuzmin and Sabine Lammers and Patrice Lebrun and H. S. Lee and S. Lee and W. M. Lee and Xiaowen Lei and J{\'e}r{\'e}mie Lellouch and D. Li and H. Li and L. Li and Q. Z. Li and J. K. Lim and Don Lincoln and J. T. Linnemann and V. V. Lipaev and Ron Lipton and H. Liu and Y. L. Liu and A. A. Lobodenko and Milos Lokajicek and R. Lopes de Sa and Ren{\'e} Luna-Garc{\'i}a and Adam Lyon and A. K. A. Maciel and Romain Madar and R. Maga{\~n}a-Villalba and S. Malik and Vladimir Malyshev and Jason Dhia Mansour and Jorge Mart{\'i}nez-Ortega and R. L. Mccarthy and C. L. McGivern and M. M. Meijer and Alex Melnitchouk and D{\'e}bora P. Menezes and Pedro G. Mercadante and Mikhail M Merkin and Arnd Meyer and J. P. Meyer and Florian Miconi and Naba Kumar Mondal and Michael Mulhearn and Elemer Nagy and Meenakshi Narain and Ruchika Nayyar and H. A. Neal and Juan Pablo Negret and P. V. Neustroev and Hung T. Nguyen and Thomas Nunnemann and Jes{\'u}s Orduna and Nicolas Osman and Arnab Pal and Neeti Parashar and Vivek Singh Parihar and S. K. Park and R. Bruce Partridge and Nirmalya Parua and Abid Patwa and B Penning and Maxim A. Perfilov and Yvonne Peters and Konstantinos Petridis and Gianluca Petrillo and Pierre P{\'e}troff and Marc-Andr{\'e} Pleier and Vladimir Podstavkov and Alexey Vladimirovich Popov and Michelle Prewitt and Darren D Price and N. N. Prokopenko and Jianming Qian and Arnulf Quadt and B. Quinn and Peter Ratoff and I. K. Razumov and Isabelle Ripp-Baudot and Flera Rizatdinova and Mandy Kathleen Rominsky and Anthony Ross and C. Royon and Paul Rubinov and Randy C. Ruchti and G. Sajot and A. Sanchez-Hernandez and Michiel P. Sanders and A. De Souza Santos and Graham Savage and Mykola Savitskyi and Lee Sawyer and Tim Scanlon and R Dean Schamberger and Yu. A. Scheglov and H. Schellman and Matthias Schott and Christian Schwanenberger and Reinhard Schwienhorst and Jadranka Sekaric and Horst Severini and Elizaveta Shabalina and Viatcheslav Shary and Savanna Marie Shaw and A. A. Shchukin and Vladislav {\vS}im{\'a}k and Patrick Skubic and Patrick Slattery and Gregory R. Snow and J. Snow and Scott Snyder and S. S{\"o}ldner-Rembold and Lars Sonnenschein and Karel Soustruznik and Jan Stark and Nazar Stefaniuk and Daniela Stoyanova and Michael Strauss and Larry J. Suter and Peter Svoisky and Maksym Titov and Valeriy Tokmenin and Y. T. Tsai and Dmitri Tsybychev and Boris Tuchming and Christopher Tully and L. N. Uvarov and Sergey Uvarov and S. Uzunyan and R. Van Kooten and Wessel M A van Leeuwen and Nikos Varelas and Erich Varnes and Igor A. Vasilyev and Alexander Yurievich Verkheev and Leonid S Vertogradov and M. Verzocchi and M. Vesterinen and D. Vilanova and Petr Vokac and Horst D. Wahl and M. H.L.S. Wang and Jerzy B. Warchoł and Gordon T. Watts and Mitchell Wayne and Jonas Weichert and L. Welty-Rieger and M. R. J. Williams and Graham Wilson and Markus Wobisch and Darien Wood and Terry Richard Wyatt and Y. H. Xie and Ryuji Yamada and S. Yang and Tomohiro Yasuda and Y. A. Yatsunenko and Wanyu Ye and Z. Ye and Hang Yin and Kin Yip and Sung Won Youn and J. Yu and J. Zennamo and Tianchi Zhao and B. Zhou and J. Zhu and M. Zielinski and Daria Zieminska and Lidija Živkovi{\'c}},
  journal={Physical review letters},
  year={2016},
  volume={117 2},
  pages={
          022003
        }
}
We report evidence for a narrow structure, X(5568), in the decay sequence X(5568)→B_{s}^{0}π^{±}, B_{s}^{0}→J/ψϕ, J/ψ→μ^{+}μ^{-}, ϕ→K^{+}K^{-}. This is evidence for the first instance of a hadronic state with valence quarks of four different flavors. The mass and natural width of this state are measured to be m=5567.8±2.9(stat)_{-1.9}^{+0.9}(syst)  MeV/c^{2} and Γ=21.9±6.4(stat)_{-2.5}^{+5.0}(syst)  MeV/c^{2}. If the decay is X(5568)→B_{s}^{*}π^{±}→B_{s}^{0}γπ^{±} with an unseen γ, m(X(5568… 

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Reference EPFL-ARTICLE-154575doi:10.1103/PhysRevLett.100.142001View record in Web of Science Record created on 2010-11-05, modified on 2017-12-10