Multiplicity dependence of ϒ production at forward rapidity in pp collisions at $\sqrt{s}$ = 13 TeV
Shreyasi Acharya, Dagmar Adamova, A. Akindinov, Jana Bielcikova, Grzegorz Andrzej Wilk, Jeremy John Wilkinson, Guido Alexander Willems, Bernd Stefan Windelband, M. Winn, Josephina Rae Wright, Wenya Wu, Y. Wu, Ran Xu, A. Yadav, Jacek Bogumil Biernat, Arun Kumar Yadav, Serpil Yalcin Kuzu, Yorito Yamaguchi, Kosei Yamakawa, Shiming Yang, Satoshi Yano, Zhongbao Yin, I.-K. Yoo, Jin Hee Yoon, Shiming Yuan, Alexandre Patrick Bigot, Alperen Yuncu, V. Zaccolo, Chiara Zampolli, Henrique Jose Correia Zanoli, F. Zanone, Nima Zardoshti, Andrey Zarochentsev, Petr Zavada, Nikolay Zavyalov, Mikhail Zhalov, Ante Bilandzic, Biao Zhang, Song Zhang, Xiaoming Zhang, Yifei Zhang, Zhen Zhang, Mingrui Zhao, Vladimir Zherebchevskii, Zhi Yu, Natalia Zhigareva, Daicui Zhou, Gabor Biro, Y. Zhou, Jianhui Zhu, Ya Zhu, Gennady Zinovjev, Stefan Cristi Zugravel, Nicola Zurlo, ALICE Collaboration, Saikat Biswas, Nicolas Luc Bize, Justin Thomas Blair, Dmitry Blau, Mihail Bogdan Blidaru, Mohammad Al-turany, Nora Bluhme, Christoph Blume, Gianluigi Boca, Friederike Bock, Tea Bodova, Alexey Bogdanov, S. Boi, Jeongsu Bok, Laszlo Boldizsar, A. Bolozdynya, Dmitry Aleksandrov, M. Bombara, P. M. Bond, Germano Bonomi, Herve Borel, Alexander Borissov, Andres Gerardo Borquez Carcamo, Hannah Bossi, Elena Botta, Youssef El Mard Bouziani, Lars Bratrud, Bruno Alessandro, Peter Braun-munzinger, Marco Bregant, Michal Broz, G. Bruno, M. D. Buckland, Dmitry Budnikov, Henner Buesching, Stefania Bufalino, Ophélie Bugnon, Paul Alois Buhler, Haidar Masud Alfanda, Edith Zinhle Buthelezi, Jamila Bashir Butt, Sebastian Adam Bysiak, Mengke Cai, Helen Louise Caines, Alberto Caliva, Ernesto Calvo Villar, Juan Manuel Mejia Camacho, Paolo Camerini, Fabio De Moraes Canedo, Jose Ruben Alfaro Molina, Sierra Lisa Weyhmiller, Mihai Carabaș, Aitor Amatriain Carballo, F. Carnesecchi, R. Caron, Javier Ernesto Castillo Castellanos, Fabio Catalano, Cesar Ceballos Sanchez, Irakli Chakaberia, Pritam Chakraborty, Bushra Ali, Sinjini Chandra, Sylvain Chapeland, M. Chartier, Subhasis Chattopadhyay, Sukalyan Chattopadhyay, T. Cheng, Cvetan Valeriev Cheshkov, Brigitte Cheynis, Vasco Miguel Chibante Barroso, David Dobrigkeit Chinellato, Yasir Ali, E. S. Chizzali, J. Cho, Soyeon Cho, P. Chochula, Panagiotis Christakoglou, C. H. Christensen, Peter Harald Lindenov Christiansen, T. Chujo, Mario Ciacco, Corrado Cicalo, A. Alici, L. Cifarelli, Federico Cindolo, Michael Rudolf Ciupek, Giulia Clai, Fabio Filippo Colamaria, J. S. Colburn, Domenico Colella, Manuel Colocci, Matteo Concas, Gustavo Conesa Balbastre, Negin Alizadehvandchali, Zaida Conesa del Valle, Giacomo Contin, Jesus Guillermo Contreras Nuno, Maurice Coquet, Thomas Michael Cormier, Pietro Cortese, M. R. Cosentino, Filippo Costa, S. Costanza, J. Crkovská, Alexander Adler, A. Alkin, Philippe Crochet, Reynier Cruz Torres, Eleazar Cuautle Flores, Pengyao Cui, Leticia Cunqueiro Mendez, Andrea Dainese, Meike Charlotte Danisch, Andrea Danu, Prottay Das, Prottoy Das, J. Alme, Supriya Das, A. Dash, Sadhana Dash, Annalisa De Caro, Giacinto De Cataldo, Jan De Cuveland, Alessandro De Falco, D. De Gruttola, Nora De Marco, Chiara De Martin, G. Alocco, Salvatore De Pasquale, Suman Deb, R. J. Debski, Kamil Rafal Deja, R. Del Grande, L. Dello Stritto, W. Deng, Preeti Dhankher, Domenico Di Bari, Antonio Di Mauro, Torsten Alt, Raul Arteche Diaz, Thomas Dietel, Yanchun Ding, Roberto Divia, Dhruv Utpalkumar Dixit, Oeystein Djuvsland, Uliana M. Dmitrieva, Alexandru Florin Dobrin, Benjamin Donigus, Anand Kumar Dubey, Igor Altsybeev, Jan Michal Dubinski, Andrea Dubla, Sandeep Dudi, Pascal Dupieux, Martin Durkac, N. Dzalaiova, Tabea Maria Eder, Ehlers, Raymond James, III, Viljar Nilsen Eikeland, Florian Eisenhut, Jesus Ricardo Alvarado Garcia, Domenico Elia, B. Erazmus, F. Ercolessi, F. Erhardt, Magnus Rentsch Ersdal, Bruno Espagnon, Giulio Eulisse, David Evans, Sergey Evdokimov, Laura Fabbietti, Mustafa Anaam, Mattia Faggin, Julien Faivre, F. Fan, W. Fan, A. Fantoni, Markus Fasel, P. Fecchio, A. Feliciello, Г. Феофилов, Arturo Fernandez Tellez, Cristian Andrei, Marta Bertran Ferrer, A. Ferrero, Chiara Ferrero, Alessandro Ferretti, Victor Jose Gaston Feuillard, Vendulka Filova, Dmitry Finogeev, Fiorella Fionda, Fernando Antonio Flor, Amanda Nicole Flores, Anton Andronic, Siegfried Valentin Foertsch, Ilya Fokin, Sergey Fokin, Enrico Fragiacomo, Eszter Frajna, Ulrich Fuchs, N. Funicello, Christophe Furget, Artur Furs, Takahiro Fusayasu, Venelin Anguelov, Jens Joergen Gaardhoeje, M. 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Le résumé fourni par la source
The measurement of ϒ(1S), ϒ(2S), and ϒ(3S) yields as a function of the charged-particle multiplicity density, dNch/dη, using the ALICE experiment at the LHC, is reported in pp collisions at $\sqrt{s}$ = 13 TeV. The ϒ meson yields are measured at forward rapidity (2.5 < y<4) in the dimuon decay channel, whereas the charged-particle multiplicity is defined at central rapidity (|η|<1). Both quantities are divided by their average value in minimum bias events to compute the self-normalized quantities. The increase of the self-normalized ϒ(1S), ϒ(2S), and ϒ(3S) yields is found to be compatible with a linear scaling with the self-normalized dN$_{ch}$/dη, within the uncertainties. The self-normalized yield ratios of excited-to-ground ϒ states are compatible with unity within uncertainties. Similarly, the measured double ratio of the self-normalized ϒ(1S) to the self-normalized J/ψ yields, both measured at forward rapidity, is compatible with unity for self-normalized charged-particle multiplicities beyond one. The measurements are compared with theoretical predictions incorporating initial or final state effects.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.