Charged-particle multiplicity density at midrapidity in central Pb-Pb collisions at sqrt[S(NN)] = 2.76 TeV.

@article{Aamodt2010ChargedparticleMD,
  title={Charged-particle multiplicity density at midrapidity in central Pb-Pb collisions at sqrt[S(NN)] = 2.76 TeV.},
  author={K. Aamodt and Betty I. Bezverkhny Abelev and Arian Abrahantes Quintana and D. Adamova and A. M. Adare and M. M. Aggarwal and Gianluca Aglieri Rinella and A. G. Agocs and S Aguilar Salazar and Zubayer Ahammed and A Ahmad Masoodi and Naseem Ahmad and Sumin Ahn and A. Akindinov and Dobrin Aleksandrov and Bruno Alessandro and Rafael A. Molina and Ali Alici and A. Alkin and E. Almar{\'a}z Avi{\~n}a and Thomas Alt and V. Altini and S. Altinpinar and I. G. Altsybeev and C. Andrei and Anton Andronic and V. Anguelov and C. D. Anson and T. Anti{\vc}i{\'c} and F R Antinori and Pietro Antonioli and L. Aphecetche and Harald Appelsh{\"a}user and Nicolas Arbor and S. Arcelli and A. Arend and N Estor Armesto and Roberta Arnaldi and Thomas Aronsson and I. C. Arsene and A. B. Asryan and A. Augustinus and Ralf Averbeck and Terry C. Awes and Juha Ayst{\"o} and Mohamed D Azmi and Morten Bach and A. Badal{\`a} and Youngwon Baek and Stefano Bagnasco and R. Bailhache and Renu Bala and Rinaldo Baldini Ferroli and A. Baldisseri and Adrien Baldit and F. Baltasar Dos Santos Pedrosa and J. C. Ban and Ram{\'o}n Barber{\'a} and Francesco Barile and Gergely G{\'a}bor Barnaf{\"o}ldi and Lee Barnby and V. Barret and J. Bartke and M. Basile and N. Bastid and B. Bathen and G. Batigne and B. V. Batyunya and Christoph Baumann and Ian G. Bearden and Hillary Beck and Iouri Belikov and Fabio Bellini and Rene Bellwied and E. Belmont-Moreno and S. Beol{\`e} and I. Berceanu and Alexandru Bercuci and El{\`e}ni Berdermann and Yury Berdnikov and Christoph Bergmann and Latchezar Betev and Abhilasha Bhasin and Ashok Kumar Bhati and Livio Bianchi and Nicola Bianchi and Cristiana Bianchin and Jaroslav Bielcik and Jana Bielcikova and Ante Bilandzic and Emanuele Biolcati and Aurelian Blanc and Francisco Blanco and David Blau and Claas Blume and Marco Boccioli and Nicolas Bock and Anita Bogdanov and Henrik B\oggild and M. Yu. Bogolyubsky and L. Boldizs{\'a}r and Marek Bombara and C. Bombonati and Joe Book and H. Borel and Alexei Borissov and C. Bortolin and Subhonmesh Bose and Frederic Bossu and M. Botje and Stefan Boettger and B. Boyer and Peter Braun-Munzinger and Larissa V. Bravina and M. Bregant and T. Breitner and Miroslav Broz̆ and Raymond Brun and Elena Bruna and Giuseppe Bruno and Dmitry Budnikov and H. Georg Buesching and K Bugaiev and Oliver Busch and Z. Buthelezi and D. Caffarri and X Cai and Helen Caines and Edwin C. Villar and Piergiorgio Camerini and V. Canoa Roman and Gianfranco Romeo and Franco Carena and Wisla Carena and Federico Carminati and A Casanova D{\'i}az and Michele Caselle and J. Castillo Castellanos and V. Cătănescu and Costanza Cavicchioli and J. Cepila and Piergiorgio Cerello and Baorong Chang and Sylvain Chapeland and J. L. Charvet and Subhasis Chattopadhyay and Marianne Cherney and C. V. Cheshkov and B. Cheynis and Elisa Chiavassa and Vasco Chibante Barroso and David D. Chinellato and P. Chochula and Mikolaj Chojnacki and Panos Christakoglou and Claus H Christensen and Pernille Christiansen and Tatsuya Chujo and Corrado Cicalo and Luisa Cifarelli and F. Cindolo and J. Cleymans and Fabrizio Coccetti and J-P Coffin and Stefano Coli and G. Conesa Balbastre and Z. Conesa del Valle and Peter Constantin and Giacomo Contin and Jes{\'u}s Guillermo Contreras and T. M. Cormier and Y. Corrales Morales and I. Cort{\'e}s Maldonado and Pietro Cortese and Mauro R. Cosentino and Filippo Costa and Maria Cotallo and E. Crescio and Pierre-andr{\'e} Crochet and Eleazar Cuautle and Leticia Cunqueiro and G. D. Erasmo and Andrea Dainese and Helle Dalsgaard and Alexandra Danu and Diganta Das and Indrajit Das and Kalidas Das and Ayusman Dash and Shiba Prasad Dash and Soma de and A De Azevedo Moregula and G. O. V. de Barros and Alain De Caro and G. de Cataldo and J. de Cuveland and Anna De Falco and D. De Gruttola and Nora De Marco and Sandra De Pasquale and R De Remigis and R. de Rooij and Pawel R. Debski and Esther. Sanchez and H. Delagrange and Ydalia Delgado Mercado and Giulio Dellacasa and A. Deloff and V. A. Demanov and Ervin Denes and A. Deppman and D. Di Bari and C. Di Giglio and S. Di Liberto and Antonino Di Mauro and P. Di Nezza and Thomas Dietel and Roberto Divia and \O. Djuvsland and Andrei Dobrin and Tadeusz Dobrowolski and Inma Dom{\'i}nguez and Benjamin D{\"o}nigus and O. Dordic and O. Driga and Archi Dubey and J Dubuisson and L. Ducroux and P. Dupieux and A. K. Dutta Majumdar and Mayukh Majumdar and Davide Elia and Dr. Peter Emschermann and Heiko Engel and Haydar Erdal and B. Espagnon and Magali Estienne and Shigeyuki Esumi and Davy Evans and S. Evrard and G Kh Eyyubova and Christian W. Fabjan and Daniela Fabris and J. Faivre and Davide Falchieri and Adolfo Fantoni and Michael Fasel and Roger Fearick and A. G. Fedunov and D. Fehlker and Veronika Fekete and D. Felea and G. A. Feofilov and A. Fern{\'a}ndez T{\'e}llez and Andrea Ferretti and Ralph Ferretti and Jan Figiel and M. A. S. Figueredo and S V Filchagin and Riccardo Fini and D. Finogeev and F. M. Fionda and Eddie Fiore and Micol Floris and Silvia F{\"o}rtsch and Peli Foka and S. L. Fokin and enrico. fragiacomo and M. Fragkiadakis and U. Frankenfeld and Ulrich Fuchs and F. Furano and C. Furget and Murielle F Girard and J. J. Gaardh\oje and S. Gadrat and Mario Gagliardi and A. Gago and Miguel Gallio and D. R. Gangadharan and P. Ganoti and Murthy Ganti and Chilo Garabatos and E. J. Garcia-Solis and Irakli Garishvili and R. Gemme and Jochen Gerhard and Marc Germain and C. Geuna and Andrei Gheata and Mihaela Gheata and B. Ghidini and P. Ghosh and Paola Gianotti and M. R. Girard and Giuseppe Giraudo and Paolo Giubellino and E. Gladysz-Dziadus and P. Gl{\"a}ssel and R. Gomez and E. Ferreiro and H. Gonz{\'a}lez Santos and L. H. Gonz{\'a}lez-Trueba and P. Gonz{\'a}lez-Zamora and Sergey Gorbunov and Sven Gotovac and Varlen Grabski and R. Grajcarek and A. Grelli and Anca Grigoras and Costin Grigoras and Vlaimir V Grigoriev and Anna Grigoryan and Svetlana Grigoryan and B. Grinyov and Natalia Grion and Patrick. Gros and Jan Fiete Grosse-Oetringhaus and J. Y. Grossiord and R. Grosso and F. F. Guber and R. Guernane and Carlos G. Guti{\'e}rrez and Barbara Guerzoni and K E Gulbrandsen and Tomohiko Gunji and Asha Gupta and Rockey Gupta and H. Gutbrod and \Oystein A Haaland and Cynthia Hadjidakis and M. Haiduc and Hideki Hamagaki and Gergő Hamar and Jack W. Harris and Mareke Hartig and Delia Hasch and D. Haşegan and D. Hatzifotiadou and Anush Hayrapetyan and M. Heide and Manfred Heinz and H. Helstrup and Anna Marie Herghelegiu and Claribel Hern{\'a}ndez and Gerardo Herrera Corral and Norbert Herrmann and Kristin Fanebust Hetland and Brett Hicks and Pascal Van Hille and B. Hippolyte and Takahiro Horaguchi and Yuko Hori and Peter Hristov and I. Hrivnacova and Ming-qiu Huang and Sebastian Huber and Thomas J. Humanic and Dae Sung Hwang and Rapha{\"e}lle Ichou and R. I. Ilkaev and Iryna Ilkiv and Michi-aki Inaba and Elisabetta Incani and Giorgio M. Innocenti and Paola Innocenti and M. S. Ippolitov and Muhammad Irfan and Cristina Ivan and Aleksei Ivanov and Ivan Nedkov Ivanov and Victor A. Ivanov and A. Jachołkowski and Peter M. Jacobs and L. Jan{\vc}urov{\'a} and S. Jangal and Romuald Janik and Soumitri Jena and L. Jirden and George Tripp Jones and Peter Glynne ‐ Jones and Peter Jovanovi{\'c} and Hoill Jung and W. Jung and A. Jusko and Sebastian Kalcher and P. Kaliň{\'a}k and Marina Kalisky and T. Kalliokoski and Anne Kalweit and R. Kamermans and K. Kanaki and E. Kang and J. H. Kang and V. V. Kaplin and O. V. Karavichev and T. L. Karavicheva and E. V. Karpechev and Andrey Kazantsev and Udo Kebschull and Ralf Keidel and M. Mohisin Khan and Soma Khan and A. V. Khanzadeev and Yuri Kharlov and Bjarte Kileng and Diana J. Kim and Dong Soo Kim and D. W. Kim and Hyun Na Kim and Joon Hyun Kim and J. S. Kim and Min Keun Kim and Jinwoo Kim and St{\'e}phane Kirsch and I. V. Kisel and S. G. Kiselev and Anna Kisiel and Jennifer L. Klay and Jacob Klein and Christian Klein-B{\"o}sing and Michael Kliemant and atle. klovning and Alexander Kluge and M. L. Knichel and Katrin Koch and Michael K. Koehler and Rodion Kolevatov and A. Kolojvari and Vlad I Kondratiev and N. V. Kondratyeva and A. Konevskih and E. Kornaś and C. Kottachchi Kankanamge Don and Ranjeet Kour and M. Kowalski and Serge Kox and G. Koyithatta Meethaleveedu and K. Kozlov and J{\'a}n Kr{\'a}l and Igor Kralik and Felix Kramer and Ingo Kraus and Tobias Krawutschke and Mathis Kretz and Marian Krivda and Filip Krizek and D. Krumbhorn and Miroslav Kr̊us and E. L. Kryshen and Mikolaj Krzewicki and Y. Kucheriaev and Christina Kuhn and P. G. Kuijer and Pimen Kurashvili and Alexander Kurepin and A. V. Kuryakin and S. Kushpil and Vasilij Kushpil and M. J. Kweon and Youngshin Kwon and Paola La Rocca and P Ladr{\'o}n de Guevara and Vincent Lafage and Cristian Lara and Aur{\'e}lie Lardeux and D. Larsen and Cristina Lazzeroni and Y. Le Bornec and R Lea and K. S. Lee and S. C. Lee and Fabien Lefevre and Judith Lehnert and Lars Leistam and Mirjana Lenhardt and V. Lenti and Ignacio Monz{\'o}n and H. Le{\'o}n Vargas and P{\'e}ter L{\'e}vai and Xiaofeng Li and J. Lien and Roman Lietava and S. Lindal and Volker Lindenstruth and Christian Lippmann and M. A. Lisa and Lei Liu and P. I. Loenne and V. R. Loggins and Vadim Loginov and Stefan Lohn and Constantin Loizides and K. K. Loo and Xavier L{\'o}pez and Mercedes L{\'o}pez Noriega and Ernesto Lopez Torres and G L L\ovh\oiden},
  journal={Physical review letters},
  year={2010},
  volume={105 25},
  pages={252301}
}
The first measurement of the charged-particle multiplicity density at midrapidity in Pb-Pb collisions at a center-of-mass energy per nucleon pair √ S NN = 2.76 TeV is presented. For an event sample corresponding to the most central 5% of the hadronic cross section, the pseudorapidity density of primary charged particles at midrapidity is 1584 ± 4(stat) ± 76(syst), which corresponds to 8.3 ± 0.4(syst) per participating nucleon pair. This represents an increase of about a factor 1.9 relative to… CONTINUE READING

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