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Search for a common baryon source in high-multiplicity pp collisions at the LHC
Authors
S. Acharya Adamová, D. Adler, A. Adolfsson, J. Aggarwal, M.M. Aglieri Rinella, G. Agnello, M. Agrawal, N. Ahammed, Z. Ahmad, S. Ahn, S.U. Akbar, Z. Akindinov, A. Al-Turany, M. Alam, S.N. Albuquerque, D.S.D. Aleksandrov, D. Alessandro, B. Alfanda, H.M. Alfaro Molina, R. Ali, B. Ali, Y. Alici, A. Alkin, A. Alme, J. Alt, T. Altenkamper, L. Altsybeev, I. Anaam, M.N. Andrei, C. Andreou, D. Andrews, H.A. Andronic, A. Angeletti, M. Anguelov, V. Anson, C. Antičić, T. Antinori, F. Antonioli, P. Apadula, N. Aphecetche, L. Appelshäuser, H. Arcelli, S. Arnaldi, R. Arratia, M. Arsene, I.C. Arslandok, M. Augustinus, A. Averbeck, R. Aziz, S. Azmi, M.D. Badalà, A. Baek, Y.W. Bagnasco, S. Bai, X. Bailhache, R. Bala, R. Balbino, A. Baldisseri, A. Ball, M. Balouza, S. Banerjee, D. Barbera, R. Barioglio, L. Barnaföldi, G.G. Barnby, L.S. Barret, V. Bartalini, P. Barth, K. Bartsch, E. Baruffaldi, F. Bastid, N. Basu, S. Batigne, G. Batyunya, B. Bauri, D. Bazo Alba, J.L. Bearden, I.G. Beattie, C. Bedda, C. Behera, N.K. Belikov, I. Bell Hechavarria, A.D.C. Bellini, F. Bellwied, R. Belyaev, V. Bencedi, G. Beole, S. Bercuci, A. Berdnikov, Y. Berenyi, D. Bertens, R.A. Berzano, D. Besoiu, M.G. Betev, L. Bhasin, A. Bhat, I.R. Bhat, M.A. Bhatt, H. Bhattacharjee, B. Bianchi, A. Bianchi, L. Bianchi, N. Bielčík, J. Bielčíková, J. Bilandzic, A. Biro, G. Biswas, R. Biswas, S. Blair, J.T. Blau, D. Blume, C. Boca, G. Bock, F. Bogdanov, A. Boi, S. Bok, J. Boldizsár, L. Bolozdynya, A. Bombara, M. Bonomi, G. Borel, H. Borissov, A. Bossi, H. Botta, E. Bratrud, L. Braun-Munzinger, P. Bregant, M. Broz, M. Bruna, E. Bruno, G.E. Buckland, M.D. Budnikov, D. Buesching, H. Bufalino, S. Bugnon, O. Buhler, P. Buncic, P. Buthelezi, Z. Butt, J.B. Bysiak, S.A. Caffarri, D. Caliva, A. Calvo Villar, E. Camacho, R.S. Camerini, P. Capon, A.A. Carnesecchi, F. Caron, R. Castillo Castellanos, J. Castro, A.J. Casula, E.A.R. Catalano, F. Ceballos Sanchez, C. Chakraborty, P. Chandra, S. Chang, W. Chapeland, S. Chartier, M. Chattopadhyay, S. Chauvin, A. Cheshkov, C. Cheynis, B. Chibante Barroso, V. Chinellato, D.D. Cho, S. Chochula, P. Chowdhury, T. Christakoglou, P. Christensen, C.H. Christiansen, P. Chujo, T. Cicalo, C. Cifarelli, L. Cindolo, F. Clai, G. Cleymans, J. Colamaria, F. Colella, D. Collu, A. Colocci, M. Concas, M. Conesa Balbastre, G. Conesa del Valle, Z. Contin, G. Contreras, J.G. Cormier, T.M. Corrales Morales, Y. Cortese, P. Cosentino, M.R. Costa, F. Costanza, S. Crochet, P. Cuautle, E. Cui, P. Cunqueiro, L. Dabrowski, D. Dahms, T. Dainese, A. Damas, F.P.A. Danisch, M.C. Danu, A. Das, D. Das, I. Das, P. Das, S. Dash, A. Dash, S. De, S. De Caro, A. de Cataldo, G. de Cuveland, J. De Falco, A. De Gruttola, D. De Marco, N. De Pasquale, S. Deb, S. Degenhardt, H.F. Deja, K.R. Deloff, A. Delsanto, S. Deng, W. Devetak, D. Dhankher, P. Di Bari, D. Di Mauro, A. Diaz, R.A. Dietel, T. Dillenseger, P. Ding, Y. Divià, R. Dixit, D.U. Djuvsland, Ø. Dmitrieva, U. Dobrin, A. Dönigus, B. Dordic, O. Dubey, A.K. Dubla, A. Dudi, S. Dukhishyam, M. Dupieux, P. Ehlers, R.J. Eikeland, V.N. Elia, D. Epple, E. Erazmus, B. Erhardt, F. Erokhin, A. Ersdal, M.R. Espagnon, B. Eulisse, G. Evans, D. Evdokimov, S. Fabbietti, L. Faggin, M. Faivre, J. Fan, F. Fantoni, A. Fasel, M. Fecchio, P. Feliciello, A. Feofilov, G. Fernández Téllez, A. Ferrero, A. Ferretti, A. Festanti, A. Feuillard, V.J.G. Figiel, J. Filchagin, S. Finogeev, D. Fionda, F.M. Fiorenza, G. Flor, F. Flores, A.N. Foertsch, S. Foka, P. Fokin, S. Fragiacomo, E. Frankenfeld, U. Fuchs, U. Furget, C. Furs, A. Fusco Girard, M. Gaardhøje, J.J. Gagliardi, M. Gago, A.M. Gal, A. Galvan, C.D. Ganoti, P. Garabatos, C. Garcia-Solis, E. Garg, K. Gargiulo, C. Garibli, A. Garner, K. Gasik, P. Gauger, E.F. Gay Ducati, M.B. Germain, M. Ghosh, J. Ghosh, P. Ghosh, S.K. Giacalone, M. Gianotti, P. Giubellino, P. Giubilato, P. Glässel, P. Gomez Ramirez, A. Gonzalez, V. González-Trueba, L.H. Gorbunov, S. Görlich, L. Goswami, A. Gotovac, S. Grabski, V. Graczykowski, L.K. Graham, K.L. Greiner, L. Grelli, A. Grigoras, C. Grigoriev, V. Grigoryan, A. Grigoryan, S. Groettvik, O.S. Grosa, F. Grosse-Oetringhaus, J.F. Grosso, R. Guernane, R. Guittiere, M. Gulbrandsen, K. Gunji, T. Gupta, A. Gupta, R. Guzman, I.B. Haake, R. Habib, M.K. Hadjidakis, C. Hamagaki, H. Hamar, G. Hamid, M. Hannigan, R. Haque, M.R. Harlenderova, A. Harris, J.W. Harton, A. Hasenbichler, J.A. Hassan, H. Hatzifotiadou, D. Hauer, P. Havener, L.B. Hayashi, S. Heckel, S.T. Hellbär, E. Helstrup, H. Herghelegiu, A. Herman, T. Hernandez, E.G. Herrera Corral, G. Herrmann, F. Hetland, K.F. Hillemanns, H. Hills, C. Hippolyte, B. Hohlweger, B. Honermann, J. Horak, D. Hornung, A. Hornung, S. Hosokawa, R. Hristov, P. Huang, C. Hughes, C. Huhn, P. Humanic, T.J. Hushnud, H. Husova, L.A. Hussain, N. Hussain, S.A. Hutter, D. Iddon, J.P. Ilkaev, R. Ilyas, H. Inaba, M. Innocenti, G.M. Ippolitov, M. Isakov, A. Islam, M.S. Ivanov, M. Ivanov, V. Izucheev, V. Jacak, B. Jacazio, N. Jacobs, P.M. Jadlovska, S. Jadlovsky, J. Jaelani, S. Jahnke, C. Jakubowska, M.J. Janik, M.A. Janson, T. Jercic, M. Jevons, O. Jin, M. Jonas, F. Jones, P.G. Jung, J. Jung, M. Jusko, A. Kalinak, P. Kalweit, A. Kaplin, V. Kar, S. Karasu Uysal, A. Karavichev, O. Karavicheva, T. Karczmarczyk, P. Karpechev, E. Kebschull, U. Keidel, R. Keil, M. Ketzer, B. Khabanova, Z. Khan, A.M. Khan, S. Khan, S.A. Khanzadeev, A. Kharlov, Y. Khatun, A. Khuntia, A. Kileng, B. Kim, B. Kim, D. Kim, D.J. Kim, E.J. Kim, H. Kim, J. Kim, J.S. Kim, M. Kim, S. Kim, T. Kirsch, S. Kisel, I. Kiselev, S. Kisiel, A. Klay, J.L. Klein, C. Klein, J. Klein, S. Klein-Bösing, C. Kleiner, M. Kluge, A. Knichel, M.L. Knospe, A.G. Kobdaj, C. Köhler, M.K. Kollegger, T. Kondratyev, A. Kondratyeva, N. Kondratyuk, E. Konig, J. Konigstorfer, S.A. Konopka, P.J. Kornakov, G. Koska, L. Kovalenko, O. Kovalenko, V. Kowalski, M. Králik, I. Kravčáková, A. Kreis, L. Krivda, M. Krizek, F. Krizkova Gajdosova, K. Krüger, M. Kryshen, E. Krzewicki, M. Kubera, A.M. Kučera, V. Kuhn, C. Kuijer, P.G. Kumar, L. Kundu, S. Kurashvili, P. Kurepin, A. Kurepin, A.B. Kuryakin, A. Kushpil, S. Kvapil, J. Kweon, M.J. Kwon, J.Y. Kwon, Y. La Pointe, S.L. La Rocca, P. Lai, Y.S. Langoy, R. Lapidus, K. Lardeux, A. Larionov, P. Laudi, E. Lavicka, R. Lazareva, T. Lea, R. Leardini, L. Lee, J. Lee, S. Lehas, F. Lehner, S. Lehrbach, J. Lemmon, R.C. León Monzón, I. Lesser, E.D. Lettrich, M. Lévai, P. Li, X. Li, X.L. Lien, J. Lietava, R. Lim, B. Lindenstruth, V. Lindner, A. Lindsay, S.W. Lippmann, C. Lisa, M.A. Liu, A. Liu, J. Liu, S. Llope, W.J. Lofnes, I.M. Loginov, V. Loizides, C. Loncar, P. Lopez, J.A. Lopez, X. López Torres, E. Luhder, J.R. Lunardon, M. Luparello, G. Ma, Y.G. Maevskaya, A. Mager, M. Mahmood, S.M. Mahmoud, T. Maire, A. Majka, R.D. Malaev, M. Malik, Q.W. Malinina, L. Mal&apos
Publication date
1 January 2020
Publisher
Abstract
We report on the measurement of the size of the particle-emitting source from two-baryon correlations with ALICE in high-multiplicity pp collisions at s=13 TeV. The source radius is studied with low relative momentum p–p, p‾–p‾, p–Λ, and p‾–Λ‾ pairs as a function of the pair transverse mass mT considering for the first time in a quantitative way the effect of strong resonance decays. After correcting for this effect, the radii extracted for pairs of different particle species agree. This indicates that protons, antiprotons, Λ s, and Λ‾ s originate from the same source. Within the measured mT range (1.1–2.2) GeV/c2the invariant radius of this common source varies between 1.3 and 0.85 fm. These results provide a precise reference for studies of the strong hadron–hadron interactions and for the investigation of collective properties in small colliding systems. © 2020 CERN for the benefit of the ALICE Collaboratio
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