Observation of the Doubly Charmed Baryon Ξ_{cc}
2017
- Roel Aaij
- Bernardo Adeva
- M. Adinolfi
- Ziad Ajaltouni
- Simon Akar
- J. Albrecht
- Federico Alessio
- M. Alexander
- A Albero Alfonso
- Suvayu Ali
- Georgy Alkhazov
- P Cartelle Alvarez
- Antonio Augusto Alves Jr
- Sandra Amato
- S. Amerio
- Yasmine Amhis
- L. An
- L Anderlini
- Guido Andreassi
- M. Andreotti
- J.E. Andrews
- R. B. Appleby
- F. Archilli
- P. d' Argent
- J Romeu Arnau
- A Artamonov
- Marina Artuso
- E. Aslanides
- G. Auriemma
- Marouen Baalouch
- Igor Babuschkin
- Sebastian Bachmann
- J. J. Back
- Alexey Badalov
- Clarissa Baesso
- Stephen Baker
- V Balagura
- W Baldini
- Alexander Baranov
- Rj Barlow
- Colin Barschel
- Sergey Barsuk
- William Barter
- F. Baryshnikov
- V. Batozskaya
- Vincenzo Battista
- A. Bay
- Leo Beaucourt
- John Beddow
- F. Bedeschi
- Ignacio Bediaga
- Andrew Beiter
- Lennaert Bel
- Nikita Beliy
- Violaine Bellee
- Nicoletta Belloli
- Konstantin Belous
- I. Belyaev
- E. Ben-Haim
- Giovanni Bencivenni
- Sean Benson
- Sarah Beranek
- A Berezhnoy
- Roland Bernet
- D. Berninghoff
- Emilie Bertholet
- A. Bertolin
- C Betancourt
- F. Betti
- M.-O. Bettler
- M Beuzekom van
- Iaroslava Bezshyiko
- Simone Bifani
- P. Billoir
- A. Birnkraut
- Alexandre Bitadze
- A Bizzeti
- M. B. Bjoern
- Thomas Blake
- Frederic Blanc
- Johan Blouw
- Steven Blusk
- V. Bocci
- Thomas Boettcher
- A. Bondar
- N. Bondar
- W. Bonivento
- Igor Bordyuzhin
- Alessio Borgheresi
- Silvia Borghi
- M. Borisyak
- Martino Borsato
- Maryna Borysova
- Francesco Bossu
- Meriem Boubdir
- T. J. V. Bowcock
- Espen Eie Bowen
- C Bozzi
- S. Braun
- Thomas Britton
- Jolanta Brodzicka
- Davide Brundu
- E. Buchanan
- C. Burr
- A Bursche
- Jan Buytaert
- Wiktor Byczynski
- Sandro Cadeddu
- Huacheng Cai
- R. Calabrese
- Ryan Calladine
- Marta Calvi
- M Gomez Calvo
- Alessandro Camboni
- P. Campana
- Dh Perez Campora
- Lorenzo Capriotti
- A Carboné
- G. Carboni
- R. Cardinale
- A. Cardini
- P Carniti
- L. Carson
- K Akiba Carvalho
- Gianluigi Casse
- Lorenzo Cassina
- L. García-Castillo
- Marco Cattaneo
- Giovanni Cavallero
- R. Cenci
- D. Chamont
- M.J. Charles
- Philippe Charpentier
- Georgios Chatzikonstantinidis
- M. Chefdeville
- Shanzhen Chen
- Shu-Faye Cheung
- Stefan-Gabriel Chitic
- Veronika Chobanova
- M. Chrząszcz
- Alexsei Chubykin
- P. Ciambrone
- X Vidal Cid
- G. Ciezarek
- P. E. L. Clarke
- Marco Clemencic
- H. V. Cliff
- J. Closier
- Julien Cogan
- Eric Cogneras
- Violetta Cogoni
- Lucian Cojocariu
- P. Collins
- Tommaso Colombo
- A. Comerma Montells
- A. Contu
- A Cook
- G. Coombs
- S. Coquereau
- Gloria Corti
- Marco Corvo
- Cm Sobral Costa
- Benjamin Couturier
- G.A. Cowan
- D. C. Craik
- A. Crocombe
- M Torres Cruz
- R. Currie
- Carmelo DAmbrosio
- F Cunha Marinho Da
- Elena Dall'Occo
- Jeremy Dalseno
- Adam Davis
- O Aguiar Francisco De
- S Capua De
- M Cian De
- Jm Miranda De
- L Paula De
- M Serio De
- P Simone De
- C. T. Dean
- D. DeCamp
- L Buono Del
- H P Dembinski
- M. Demmer
- Adam Dendek
- D. Derkach
- O. Deschamps
- Francesco Dettori
- B. Dey
- A Canto Di
- P Nezza Di
- Hans Dijkstra
- F Dordei
- Marco Dorigo
- A Suárez Dosil
- Lauren Douglas
- Anatoliy Dovbnya
- K. Dreimanis
- Laurent Dufour
- G. Dujany
- P. Durante
- Rustem Dzhelyadin
- Michal Dziewiecki
- A. Dziurda
- Alexey Dzyuba
- S Easo
- M. Ebert
- U. Egede
- Victor Egorychev
- S. Eidelman
- S. Eisenhardt
- Ulrich Eitschberger
- Robert Ekelhof
- Lars Eklund
- S. Ely
- Sevda Esen
- H. M. Evans
- Tom P. Evans
- Antonio Falabella
- Nathanael Farley
- Stephen Farry
- Robert Fay
- Davide Fazzini
- Luca Federici
- Dianne Ferguson
- Gérard Fernandez
- P Declara Fernandez
- A. Prieto Fernández
- F. Ferrari
- F Rodrigues Ferreira
- M Ferro-Luzzi
- Sergey Filippov
- Rosa Anna Fini
- Marco Fiore
- M. Fiorini
- M. Firlej
- Conor Fitzpatrick
- T. Fiutowski
- F. Fleuret
- Klaus Föhl
- M Fontana
- F. Fontanelli
- Dean Charles Forshaw
- Roger Forty
- V Lima Franco
- M. J. Frank
- Christoph Frei
- Jinlin Fu
- W. Funk
- Emiliano Furfaro
- C. Farber
- Emmy Gabriel
- A Torreira Gallas
- D. Galli
- S. Gallorini
- S. Gambetta
- M Gandelman
- P. Gandini
- Y. Gao
- Lm Martin Garcia
- J Pardiñas García
- J Tico Garra
- L. Garrido
- Philip John Garsed
- D. Gascon
- C. Gaspar
- Laura Gavardi
- Giulio Gazzoni
- David Gerick
- Evelina Gersabeck
- Marco Gersabeck
- T.J. Gershon
- P. Ghez
- Simone Giani
- V. Gibson
- O. G. Girard
- Lavinia-Helena Giubega
- Konstantin Gizdov
- V.V. Gligorov
- D. Golubkov
- A. Golutvin
- A. Gomes
- I.V. Gorelov
- C. Gotti
- Ekaterina Govorkova
- Jascha Peter Grabowski
- R Diaz Graciani
- La Cardoso Granado
- E Graugés
- E. Graverini
- G Graziani
- Alexandru Grecu
- Roman Greim
- Peter Griffith
- Lucia Grillo
- L. Gruber
- Br Cazon Gruberg
- O. Grünberg
- E. Gushchin
- Yury Guz
- Thierry Gys
- Carla Gobel
- T Hadavizadeh
- C. Hadjivasiliou
- G. Haefeli
- Christophe Haen
- Susan Haines
- B Hamilton
- X Han
- Thomas Henry Hancock
- Stephanie Hansmann-Menzemer
- Neville Harnew
- S. T. Harnew
- J. Harrison
- Christoph Hasse
- Mark Hatch
- J. He.
- Malte Hecker
- Kevin Heinicke
- Arno Heister
- Karol Hennessy
- Pierre Henrard
- L. Henry
- E Herwijnen van
- M. Heß
- Adlene Hicheur
- Donal Hill
- Christoph Hombach
- P. H. Hopchev
- Z. C. Huard
- W.D. Hulsbergen
- T. Humair
- M Hushchyn
- D E Hutchcroft
- Philipp Ibis
- Marek Idzik
- Philip Ilten
- R. Jacobsson
- J. Jalocha
- Eddy Jans
- A. Jawahery
- F. Jiang
- M. J. J. John
- D.R. Johnson
- C. R. Jones
- Christian Joram
- Beat Jost
- N. Jurik
- Sergii Kandybei
- Matthias Karacson
- James Mwangi Kariuki
- S. Karodia
- Nikita Kazeev
- M. Kecke
- M. H. Kelsey
- Matthew Kenzie
- T. Ketel
- Egor Khairullin
- B. Khanji
- C. Khurewathanakul
- Thomas Kirn
- Suzanne Klaver
- Konrad Klimaszewski
- Tatsiana Klimkovich
- Serhii Koliiev
- Michael Kolpin
- Ilya Komarov
- Renata Kopečná
- P Koppenburg
- Alena Kosmyntseva
- Sofia Kotriakhova
- Mohamad Kozeiha
- Michal Kreps
- P. Krokovny
- Florian Kruse
- W. Krzemień
- W. Kucewicz
- Marcin Kucharczyk
- Vasily Kudryavtsev
- A. K. Kuonen
- Krzysztof Kurek
- Tengiz Kvaratskheliya
- Daniel Lacarrère
- G. D. Lafferty
- A. Lai
- G. Lanfranchi
- C. Langenbruch
- T.E. Latham
- Cristina Lazzeroni
- R Gac Le
- J Leerdam van
- A Leflat
- Jacques Lefrancois
- R. Lefevre
- Florian Lemaitre
- E Cid Lemos
- O. Leroy
- T. Lesiak
- B. Leverington
- P.-R. Li
- Tenglin Li
- Y. Li
- Z. Li
- Tatiana Likhomanenko
- Rolf Lindner
- F. Lionetto
- Vitalii Lisovskyi
- Xia-Ji Liu
- D. Loh
- Angelo Loi
- Iain Longstaff
- J. H. Lopes
- D. Lucchesi
- M. Martinez-Lucio
- Haofei Luo
- A. Lupato
- E. Luppi
- O. Lupton
- A. Lusiani
- X Lyu
- Frederic Machefert
- F Maciuc
- Vladimir Macko
- Patrick Mackowiak
- B Maddock
- Samuel Maddrell-Mander
- O. Maev
- Kevin Maguire
- Dmitrii Maisuzenko
- Maciej Witold Majewski
- Sneha Malde
- A. Malinin
- Timofei Maltsev
- G. Manca
- G. Mancinelli
- P. M. Manning
- Daniele Marangotto
- J Maratas
- J. F. Marchand
- Umberto Marconi
- C Benito Marin
- M. Marinangeli
- P. Mariño
- J. Marks
- G. Martellotti
- Morgan Martin
- Maurizio Martinelli
- D Santos Martinez
- F Vidal Martinez
- D Tostes Martins
- L. M. Massacrier
- Andre Massafferri
- Rosen Matev
- A. Mathad
- Zoltán Máthé
- Clara Matteuzzi
- Andrea Mauri
- E. Maurice
- B. Maurin
- A. Mazurov
- Michael McCann
- A I McNab
- R. McNulty
- James Vincent Mead
- B T Meadows
- C. Meaux
- F. Meier
- N. Meinert
- Dmytro Melnychuk
- Marcel Merk
- A. Merli
- E. Michielin
- D. A. Milanes
- E. Millard
- M.N. Minard
- Luca Minzoni
- D. S. Mitzel
- A. Mogini
- J. Rodríguez-Molina
- Titus Mombächer
- I. A. Monroy
- S. Monteil
- M. Morandin
- M. J. Morello
- Olga Morgunova
- J. Moron
- A.B. Morris
- Raymond Mountain
- F. Muheim
- Mick Mulder
- D R Muller
- Janine Muller
- K. Muller
- V Müller
- P. Naik
- T. Nakada
- Raja Nandakumar
- A. Nandi
- I. Nasteva
- Matthew Needham
- N. Neri
- S. Neubert
- Niko Neufeld
- Max Neuner
- T. D. Nguyen
- C. Nguyen Mau
- S. Nieswand
- Ramon Niet
- N. Nikitin
- Thomas Nikodem
- Alla Nogay
- D. P. Ohanlon
- A. Oblakowska Mucha
- V. Obraztsov
- Stephen Ogilvy
- R. Oldeman
- C.J.G. Onderwater
- Anna Ossowska
- Jm Goicochea Otalora
- P. Owen
- A. Oyanguren
- P.R. Pais
- A. Palano
- Matteo Palutan
- A Papanestis
- M. Pappagallo
- L.L. Pappalardo
- Cheryl Pappenheimer
- W. Parker
- C. Parkes
- Giovanni Passaleva
- Alessandra Pastore
- M. Patel
- C. Patrignani
- A. Pearce
- Antonio Pellegrino
- G. Pensó
- M Altarelli Pepe
- S. Perazzini
- Pascal Perret
- L Pescatore
- K Petridis
- A Petrolini
- Alexey A. Petrov
- Marco Petruzzo
- E Olloqui Picatoste
- B. Pietrzyk
- Małgorzata Pikies
- D Pinci
- Alessandro Pistone
- Alessio Piucci
- Vlad-Mihai Pläcintä
- S. Playfer
- M Casasus Plo
- F Polci
- M Lener Poli
- Anton Poluektov
- I. Polyakov
- Erica Polycarpo
- Gabriela Johanna Pomery
- S Ponce
- A. V. Popov
- D. Popov
- Stanislav Poslavskii
- Cedric Potterat
- E Price
- J Prisciandaro
- Claire Prouve
- Valery Pugatch
- A Navarro Puig
- Hannah Louise Pullen
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- Bartolomiej Rachwal
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- M Pernas Ramos
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- Iurii Raniuk
- F Ratnikov
- G. Raven
- M Salzgeber Ravonel
- Meril Reboud
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- C Alepuz Remon
- Victor Renaudin
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- Sophie Richards
- Mariana Rihl
- K. Rinnert
- V Molina Rives
- P. Robbe
- Arnaud Robert
- Ana Bárbara Rodrigues
- E Rodrigues
- Ja Lopez Rodriguez
- Perez P. Rodriguez
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- Stefan Roiser
- Alexandra Paige Rollings
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- A Vidal Romero
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- C Rios Santamarina
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- Gediminas Sarpis
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- Darya Savrina
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- T. Schmelzer
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- O Schneider
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- H.F. Schreiner
- K. R. Schubert
- M. Schubiger
- M.-H. Schune
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- I Shapoval
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- R Coutinho-Silva
- L de Oliveira Silva
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- Olaf Steinkamp
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- Oleg Stenyakin
- Margarita Stepanova
- Holger Stevens
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- B. Storaci
- S. Stracka
- M.E. Stramaglia
- Mihai Straticiuc
- Ulrich Straumann
- L. Sun
- William Sutcliffe
- K. Świentek
- Vasileios Syropoulos
- M. Szczekowski
- Tomasz Szumlak
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- E. Thomas
- J Tilburg van
- Matthew James Tilley
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- A. Usachov
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- Alexander Vagner
- V. Vagnoni
- Andrea Valassi
- Sébastien Valat
- G Valenti
- R. Gómez Vázquez
- P Regueiro Vazquez
- S. Vecchi
- M Veghel van
- J. J. Velthuis
- M. Veltri
- Giovanni Veneziano
- Aravindhan Venkateswaran
- Tobias Verlage
- Maxime Vernet
- Mika Vesterinen
- Jv Barbosa Viana
- Benoit Viaud
- D. Vieira
- M Diaz Vieites
- H. Viemann
- Xavier Vilasis Cardona
- Marcela Vitti
- Vladimir Volkov
- A. Vollhardt
- Balazs Voneki
- A. Vorobyev
- Vitaly Vorobyev
- Christian Voß
- Ja Vries de
- C Sierra Vázquez
- R. Waldi
- Charlotte Wallace
- Ronan Wallace
- John Walsh
- J. Wang
- Ward
- Heather Mckenzie Wark
- N K Watson
- David Websdale
- A. Weiden
- Mark Whitehead
- Jean Wicht
- G. Wilkinson
- Michael Wilkinson
- M Williams
- M.P. Williams
- T. Williams
- F. F. Wilson
- Jack Wimberley
- M A Winn
- Julian Wishahi
- Wojciech Wislicki
- Mariusz Witek
- G. Wormser
- S.A. Wotton
- Kenneth Wraight
- Kenneth Wyllie
- Y. H. Xie
- Zhirui Xu
- Z. Yang
- Yuezhe Yao
- Hang Yin
- J. Yu
- Xuhao Yuan
- Oleg Yushchenko
- Kristian Alexander Zarebski
- M Zavertyaev
- Lei Zhang
- Y Zhang
- Alexey Zhelezov
- Y. H. Zheng
- X. L. Zhu
- V. Zhukov
- Jennifer Brigitta Zonneveld
- S. Zucchelli
A highly significant structure is observed in the Λ_{c}^{+}K^{-}π^{+}π^{+} mass spectrum, where the Λ_{c}^{+} baryon is reconstructed in the decay mode pK^{-}π^{+}. The structure is consistent with originating from a weakly decaying particle, identified as the doubly charmed baryon Ξ_{cc}^{++}. The difference between the masses of the Ξ_{cc}^{++} and Λ_{c}^{+} states is measured to be 1334.94±0.72(stat.)±0.27(syst.) MeV/c^{2}, and the Ξ_{cc}^{++} mass is then determined to be 3621.40±0.72(stat.)±0.27(syst.)±0.14(Λ_{c}^{+}) MeV/c^{2}, where the last uncertainty is due to the limited knowledge of the Λ_{c}^{+} mass. The state is observed in a sample of proton-proton collision data collected by the LHCb experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 1.7 fb^{-1}, and confirmed in an additional sample of data collected at 8 TeV.
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