First measurement of $\Xi_{\rm c}^0$ production in pp collisions at $\mathbf{\sqrt{s}}$ = 7 TeV
Shreyasi Acharya,G. Biro, Monika Varga-kofarago,R. Majka,S. G. Weber, Marco Bregant,Gvozden Neskovic,M. Marchisone,Pierre Vande Vyvre,K. L. Graham,P. Gasik,M. Planinic,V. Pozdniakov,E. Bartsch,Mario Fusco Girard,F. Soramel, A. Shangaraev,T. Alt, R. Raniwala,F. Meddi,C. Schiaua, Katherin Shtejer Diaz,Xiaoming Zhang,C. Kuhn,C. Kouzinopoulos,G. Paić,R. Preghenella,Christian Holm Christensen,E. G. Ferreiro,Pascal Dupieux,Mikolaj Krzewicki,C. Deplano,J. Wilkinson,A. Caliva,Matteo Lupi, Lennart Vincent Van Doremalen,Ketil Roeed,L. Aphecetche, Sandun Pahula Hewage,E. F. Gauger,Chiara Oppedisano, Konstantin Munning, S. Gotovac,S. Kushpil,P. W. Stankus,P. Malzacher,Zaida Conesa Del Valle,V. Kovalenko,Rafael Peretti Pezzi,Yosuke Watanabe,Yasser Corrales Morales,Ernst Hellbar, F. Cindolo,Dipanjan Nag, J. Oleniacz,G. Simatovic, Marco Van Leeuwen,Zabulon Vilakazi, A. Vodopyanov,Victor Jose Gaston Feuillard, Sergio Arturo Iga Buitron,M. Nicassio, D. Budnikov, Lucas Altenkamper,Pietro Antonioli,Ernesto Calvo Villar,N. Mohammadi,M. Malaev,Sidharth Kumar Prasad,W. Riegler,S. Trogolo,Ulrich Michael Frankenfeld,R. Arnaldi,D. Silvermyr,J. Bhom, A. Herghelegiu,P. Luettig, F. Lehas, Roman Lavicka,R. Ilkaev,Astrid Morreale, Nicole Bastid, S. Bagnasco,P. Dhankher, K. Ullaland,Yury Sibiryak, Antonio Carlos Oliveira Da Silva,A. Pop,Rinaldo Rui, Erwann Masson,Z. Ahammed, Dong Jo Kim,M. Puccio,T. W. Snellman,J. Pan,Daniel Berenyi,N. Hussain,S. Kiselev,Zhang Chunhui, Manuel Guittiere,Rihan Haque,D. Hutter,S. De, Jin Hee Yoon, Se Yong Kim, Malgorzata Anna Janik, Rachid Guernane,Kunal Garg,Xinye Peng, Sergio Vergara Limon,P. Sarma,K. Redlich, Yong Wook Baek,S. Sambyal, J. Putschke,Leticia Cunqueiro Mendez, A. Toia,C. Petta,S. Gorbunov, V. Barret,M. Song, Kosei Yamakawa,A. S. Gonzalez, L. Olah,M. Colocci,R. Langoy, R. Keidel,A. Grigoryan,M. Suljic,Ø. Djuvsland, Trine Spedstad Tveter, Jonatan Adolfsson,P. Sett,B. Batyunya, R. Grosso, Luis Alberto Perez Moreno,A. Chauvin,A. M. Kubera, A. M. Barbano, Mario Sitta, L. Musa, Sandeep Dudi, J. Mareš,B. Hippolyte,G. Batigne,S. Kar, Florian Herrmann,Michael Annan Lisa, Jorge Mercado-perez, A. Reshetin, Federico Antinori, R. Haake,P. Lévai, Adam Wegrzynek, Benedetto Di Ruzza,L. Ducroux,Mona Sharma, Horst Sebastian Scheid,K. Terasaki,Jiyoung Kim, Jasper Van Der Maarel, C. Ristea, Edith Zinhle Buthelezi,R. Sultanov,S. Moretto, Audrey Francisco, Alwina Liu, E. Scapparone,M. Bombara, C. Cheshkov,K. Schweda,V. Yurchenko, Gergely Gabor Barnafoldi,Youngil Kwon,Jinsook Kim,A. Mastroserio,K. Shigaki,V. Vislavicius,Gianluca Aglieri Rinella, J. Alme, Akihide Nobuhiro,J. Niedziela,Hyeonjoong Kim,O. Pinazza,A. Deloff,T. Peitzmann,A. Mischke,R. H. Munzer,Supriya Das, Barthelemy Von Haller, Irais Bautista Guzman, Gianluca Usai, Dimitra Andreou,A. Furs, Jacobus Willem Van Hoorne,Claude Andre Pruneau,J. Musinsky,Petra Loncar, K. Voloshin, Mallick Dukhishyam,P. Reichelt, M. Krivda,Hideki Hamagaki,Jaroslav Bielcik, C. Blume,M. G. Tarzila,J. Rak, M. Meres, A. Collu, Bernhard Hohlweger,M. Slupecki,P. Pareek,M. D. Azmi, C. Zampolli,J. Jadlovsky, L. Leardini, E. Rogochaya, Soren Pontoppidan Sorensen,J. F. Grosse-Oetringhaus,M. Kowalski, Corrado Cicalo,G. Trombetta,B. Teyssier,N. Bianchi,C. Mayer,Jianhui Zhu,M. Borri, Hermann Franz Degenhardt, D. Finogeev, Sergey Shirinkin, P. Chochula,C. Bianchin, Julien Faivre, Omar Vazquez Rueda, Bernhard Skaali, Ritsuya Hosokawa, Paola La Rocca, V. Anguelov, J. Vrláková,I. Sputowska,B. Schaefer, Darius Laurens Keijdener,A. Maevskaya,S. Evdokimov, Hikari Murakami, Arvind Khuntia,Sumit Basu, A. Deisting,B. V. Jacak,S. Vigolo,E. Meninno,M. Suleymanov,Sanjay Kumar Ghosh,P. Sahoo,C. Andrei,A. Kuryakin,B. Wagner, A. Festanti, F. Reidt,S. Rajput, Y. F. Ryabov, R. Bailhache, Peter Graham Jones, Fedor Guber,Y. Pestov,S. Senyukov,E. Kondratyuk,T. Sinha,S. Filchagin,F. Barile,Auro Prasad Mohanty,S. A. 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PHYSICS LETTERS B（2018）
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摘要
The production of the charm-strange baryon Xi(0)(c) is measured for the first time at the LHC via its semileptonic decay into e(+) Xi(-) nu(e) in ppcollisions at root s = 7 TeV with the ALICE detector. The transverse momentum ( p(T)) differential cross section multiplied by the branching ratio is presented in the interval 1 < p(T)< 8 GeV/c at mid-rapidity, vertical bar y vertical bar < 0.5. The transverse momentum dependence of the Xi(0)(c) baryon production relative to the D-0 meson production is compared to predictions of event generators with various tunes of the hadronisation mechanism, which are found to underestimate the measured cross-section ratio. (C) 2018 The Author(s). Published by Elsevier B.V.
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