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First Study of the Two-Body Scattering Involving Charm Hadrons

S. Acharya,D. Adamova,A. Adler,J. Adolfsson, M. M. Aggarwal,G. Aglieri Rinella,M. Agnello,N. Agrawal,Z. Ahammed, S. Ahmad,S. U. Ahn,A. Akindinov,M. Al-Turany,S. N. Alam,D. S. D. Albuquerque,D. Aleksandrov,B. Alessandro,H. M. Alfanda,R. Alfaro Molina,B. Ali,Y. Ali,A. Alici,A. Alkin,J. Alme,T. Alt,L. Altenkamper,I. Altsybeev,M. N. Anaam,C. Andrei,D. Andreou,H. A. Andrews,A. Andronic,M. Angeletti,V. Anguelov,C. Anson,T. Anticic,F. Antinori,P. Antonioli,R. Anwar,N. Apadula,L. Aphecetche,H. Appelshaeuser, S. Arcelli,R. Arnaldi,M. Arratia,I. C. Arsene,M. Arslandok,A. Augustinus,R. Averbeck,S. Aziz,M. D. Azmi,A. Badala,Y. W. Baek,S. Bagnasco,X. Bai,R. Bailhache,R. Bala,A. Baldisseri,M. Ball,S. Balouza,R. Barbera,L. Barioglio,G. G. Barnafoldi,L. S. Barnby,V. Barret,P. Bartalini,K. Barth,E. Bartsch,F. Baruffaldi,N. Bastid,S. Basu,G. Batigne,B. Batyunya,D. Bauri,J. L. Bazo Alba,I. G. Bearden,C. Bedda,N. K. Behera,I. Belikov,A. D. C. Bell Hechavarria,F. Bellini,R. Bellwied,V. Belyaev,G. 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Christakoglou,C. H. Christensen,P. Christiansen,T. Chujo, C. Cicalo, L. Cifarelli,F. Cindolo,J. Cleymans,F. Colamaria,D. Colella,A. Collu,M. Colocci,M. Concas,G. Conesa Balbastre,Z. Conesa del Valle,G. Contin,J. G. Contreras,T. M. Cormier,Y. Corrales Morales,P. Cortese,M. R. Cosentino,F. Costa,S. Costanza,P. Crochet,E. Cuautle,P. Cui,L. Cunqueiro,D. Dabrowski,T. Dahms, A. Dainese,F. P. A. Damas,M. C. Danisch,A. Danu,D. Das,I. Das, P. Das,S. Das,A. Dash,S. Dash,S. De,A. De Caro,G. de Cataldo,J. de Cuveland,A. De Falco,D. De Gruttola,N. De Marco,S. De Pasquale,S. Deb,B. Debjani,H. F. Degenhardt,K. R. Deja,A. Deloff,S. Delsanto,D. Devetak,P. Dhankher,D. Di Bari, A. Di Mauro,R. A. Diaz,T. Dietel,P. Dillenseger,Y. Ding,R. Divia,D. U. Dixit,O. Djuvsland,U. Dmitrieva,A. Dobrin,B. Doenigus,O. Dordic,A. K. Dubey,A. Dubla,S. Dudi,M. Dukhishyam,P. Dupieux,R. J. Ehlers,V. N. Eikeland,D. Elia,H. Engel,E. Epple,B. Erazmus,F. Erhardt,A. Erokhin,M. R. Ersdal, B. Espagnon,G. Eulisse,D. Evans,S. 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Habib,C. Hadjidakis,H. Hamagaki,G. Hamar,M. Hamid,R. Hannigan,M. R. Haque,A. Harlenderova,J. W. Harris, A. Harton,J. A. Hasenbichler,H. Hassan,D. Hatzifotiadou,P. Hauer,S. Hayashi,S. T. Heckel,E. Hellbaer,H. Helstrup, A. Herghelegiu,T. Herman,E. G. Hernandez,G. Herrera Corral,F. Herrmann,K. F. Hetland,T. E. Hilden,H. Hillemanns,C. Hills, B. Hippolyte,B. Hohlweger,D. Horak,A. Hornung,S. Hornung,R. Hosokawa,P. Hristov,C. Huang,C. Hughes,P. Huhn,T. J. Humanic,H. Hushnud,L. A. Husova,N. Hussain,S. A. Hussain,D. Hutter,J. P. Iddon,R. Ilkaev,M. Inaba,G. M. Innocenti,M. Ippolitov,A. Isakov,M. S. Islam,M. Ivanov,V. Ivanov,V. Izucheev,B. Jacak,N. Jacazio,P. M. Jacobs,S. Jadlovska,J. Jadlovsky,S. Jaelani,C. Jahnke,M. J. Jakubowska,M. A. Janik,T. Janson,M. Jercic,O. Jevons,M. Jin,F. Jonas,P. G. Jones,J. Jung,M. Jung, A. Jusko,P. Kalinak,A. Kalweit,V. Kaplin,S. Kar,A. Karasu Uysal,O. Karavichev, T. Karavicheva,P. Karczmarczyk, E. Karpechev,A. Kazantsev,U. Kebschull,R. Keidel,M. Keil,B. Ketzer,Z. Khabanova, A. M. Khan,S. Khan,S. A. Khan,A. Khanzadeev,Y. Kharlov,A. Khatun,A. Khuntia,B. Kileng,B. Kim,D. Kim,D. J. Kim,E. J. Kim,H. Kim,J. Kim,J. S. Kim,M. Kim, S. Kim,T. Kim,S. Kirsch,I. Kisel,S. Kiselev,A. Kisiel,J. L. Klay,C. Klein,J. Klein,S. Klein, C. Klein-Boesing,M. Kleiner,A. Kluge,M. L. Knichel,A. G. Knospe,C. Kobdaj,M. K. Koehler,T. Kollegger,A. Kondratyev,N. Kondratyeva,E. Kondratyuk,J. Konig,P. J. Konopka,L. Koska,O. Kovalenko,V. Kovalenko,M. Kowalski,I. Kralik,A. Kravcakova,L. Kreis,M. Krivda,F. Krizek,K. Krizkova Gajdosova,M. Krueger,E. Kryshen,M. Krzewicki,A. M. Kubera,V. Kucera,C. Kuhn,P. G. Kuijer,L. Kumar, S. Kumar,S. Kundu,P. Kurashvili,A. Kurepin,A. B. Kurepin,A. Kuryakin,S. Kushpil,J. Kvapil,M. J. Kweon, J. Y. Kwon,Y. Kwon,S. L. La Pointe,P. La Rocca,Y. S. Lai,R. Langoy,K. Lapidus,A. Lardeux,P. Larionov,E. Laudi,R. Lavicka,T. Lazareva,R. Lea,L. Leardini, J. Lee,S. Lee, F. Lehas,S. Lehner,J. Lehrbach,R. C. Lemmon,I. Leon Monzon,E. D. Lesser,M. Lettrich,P. Levai,X. Li,X. L. Li,J. Lien,R. Lietava,B. Lim,V. Lindenstruth,S. W. Lindsay,C. Lippmann, M. A. Lisa,V. Litichevskyi,A. Liu,S. Liu,W. J. Llope,I. M. Lofnes,V. Loginov,C. Loizides,P. Loncar,X. Lopez,E. Lopez Torres,R. Luhder,M. Lunardon,G. Luparello,Y. Ma,A. Maevskaya,M. Mager,S. M. Mahmood,T. Mahmoud,A. Maire,R. D. Majka,M. Malaev,Q. W. Malik,L. Malinina,D. Mal'Kevich,P. Malzacher,G. Mandaglio,V. Manko,F. Manso,V. Manzari,Y. Mao,M. Marchisone,J. Mares,G. V. Margagliotti,A. Margotti,J. Margutti,A. Marin,C. Markert,M. Marquard,N. A. Martin,P. Martinengo,J. L. Martinez,M. I. Martinez,G. Martinez Garcia,M. Martinez Pedreira,S. Masciocchi,M. Masera,A. Masoni,L. Massacrier,E. Masson,A. Mastroserio,A. M. Mathis,O. Matonoha,P. F. T. Matuoka,A. Matyja,C. Mayer,M. Mazzilli,M. A. Mazzoni,A. F. Mechler,F. Meddi,Y. Melikyan, A. Menchaca-Rocha,C. Mengke,E. Meninno,M. Meres,S. Mhlanga,Y. Miake,L. Micheletti,D. L. Mihaylov,K. Mikhaylov,A. Mischke,A. N. Mishra,D. Miskowiec,A. Modak,N. Mohammadi,A. P. Mohanty,B. Mohanty,M. Mohisin Khan,C. Mordasini,D. A. Moreira De Godoy,L. A. P. Moreno,I. Morozov,A. Morsch,T. Mrnjavac,V. Muccifora,E. Mudnic,D. Muehlheim,S. Muhuri,J. D. Mulligan,M. G. Munhoz,R. H. Munzer,H. Murakami,S. Murray, L. Musa,J. Musinsky,C. J. Myers,J. W. Myrcha,B. Naik,R. Nair,B. K. Nandi,R. Nania,E. Nappi,M. U. Naru,A. F. Nassirpour,C. Nattrass,R. Nayak,T. K. Nayak,S. Nazarenko,A. Neagu,R. A. Negrao De Oliveira,L. Nellen,S. V. Nesbo,G. Neskovic,D. Nesterov,L. T. Neumann,B. S. Nielsen,S. Nikolaev, S. Nikulin,V. Nikulin,F. Noferini,P. Nomokonov,J. Norman,N. Novitzky,P. Nowakowski,A. Nyanin,J. Nystrand,M. Ogino,A. Ohlson,J. Oleniacz,A. C. Oliveira Da Silva,M. H. Oliver,C. Oppedisano,R. Orava,A. Ortiz Velasquez,A. Oskarsson,J. Otwinowski,K. Oyama,Y. Pachmayer,V. Pacik,D. Pagano,G. Paic,J. Pan,A. K. Pandey,S. Panebianco,P. Pareek,J. Park,J. E. Parkkila,S. Parmar,S. P. Pathak,R. N. Patra,B. Paul,H. Pei,T. Peitzmann,X. Peng,L. G. Pereira,H. Pereira Da Costa,D. Peresunko,G. M. 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Physical review D/Physical review D(2022)

Cited 9|Views49
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Abstract
This article presents the first measurement of the interaction between charm hadrons and nucleons. The two-particle momentum correlations of $\mathrm{pD^-}$ and $\mathrm{\overline{p}D}^+$ pairs are measured by the ALICE Collaboration in high-multiplicity pp collisions at $\sqrt{s} = 13~\mathrm{TeV}$. The data are compatible with the Coulomb-only interaction hypothesis within (1.1-1.5)$\sigma$. The level of agreement slightly improves if an attractive nucleon(N)$\overline{\mathrm{D}}$ strong interaction is considered, in contrast to most model predictions which suggest an overall repulsive interaction. This measurement allows for the first time an estimation of the 68% confidence level interval for the isospin $\mathrm{I}=0$ inverse scattering length of the $\mathrm{N\overline{D}}$ state ${f_{0,~\mathrm{I}=0}^{-1} \in [-0.4,0.9]~\mathrm{fm^{-1}}}$, assuming negligible interaction for the isospin $\mathrm{I}=1$ channel.
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