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Measuring K0SK± interactions using pp collisions at √s=7 TeV

A. Harton,H. Hassan,D. Hatzifotiadou,P. Hauer,S. Hayashi,S. T. Heckel,E. Hellbär,H. Helstrup,A. Herghelegiu,E. G. Hernandez,G. Herrera Corral,F. Herrmann,K. F. Hetland,T. E. Hilden,H. Hillemanns,C. Hills,B. Hippolyte,B. Hohlweger,D. Horak,S. Hornung,R. Hosokawa,J. Hota,P. Hristov,C. Huang,C. Hughes,P. Huhn,T. J. Humanic,H. Hushnud,N. Hussain,T. Hussain,D. Hutter,D. S. Hwang,J. P. Iddon,R. Ilkaev,M. Inaba,M. Ippolitov,M. S. Islam,M. Ivanov,V. Ivanov,V. Izucheev,B. Jacak,N. Jacazio,P. M. Jacobs,M. B. Jadhav,S. Jadlovska,J. Jadlovsky,S. Jaelani,C. Jahnke,M. J. Jakubowska,M. A. Janik,C. Jena,M. Jercic,O. Jevons,R. T. Jimenez Bustamante,M. Jin,P. G. Jones,A. Jusko,P. Kalinak,A. Kalweit,J. H. Kang,V. Kaplin,S. Kar,A. Karasu Uysal,O. Karavichev,T. Karavicheva,P. Karczmarczyk,E. Karpechev,U. Kebschull,R. Keidel,D. L. D. Keijdener,M. Keil,B. Ketzer,Z. Khabanova,A. M. Khan,S. Khan,S. A. Khan,A. Khanzadeev,Y. Kharlov,A. Khatun,A. Khuntia,M. M. Kielbowicz,B. Kileng,B. Kim,D. Kim, D. J. Kim, E. J. Kim,H. Kim,J. S. Kim,J. Kim, M. Kim,S. Kim,T. Kim,K. Kindra,S. Kirsch,I. Kisel,S. Kiselev,A. Kisiel,J. L. Klay,C. Klein,J. Klein,C. Klein-Bösing,S. Klewin,A. Kluge,M. L. Knichel,A. G. Knospe,C. Kobdaj,M. Kofarago, M. K. Köhler,T. Kollegger,N. Kondratyeva,E. Kondratyuk,A. Konevskikh,P. J. Konopka,M. Konyushikhin,L. Koska,O. Kovalenko,V. Kovalenko,M. Kowalski,I. Králik,A. Kravčáková,L. Kreis,M. Krivda,F. Krizek,M. Krüger,E. Kryshen,M. Krzewicki,A. M. Kubera,V. Kučera,C. Kuhn,P. G. Kuijer,J. Kumar,L. Kumar,S. Kumar,S. Kundu,P. Kurashvili,A. Kurepin,A. B. Kurepin,S. Kushpil,J. Kvapil, M. J. Kweon, Y. Kwon,S. L. La Pointe,P. La Rocca,Y. S. Lai,I. Lakomov,R. Langoy,K. Lapidus,A. Lardeux,P. Larionov,E. Laudi,R. Lavicka,R. Lea,L. Leardini,S. Lee,F. Lehas,S. Lehner,J. Lehrbach,R. C. Lemmon,I. León Monzón,P. Lévai,X. Li,X. L. Li,J. Lien, R. Lietava,B. Lim,S. Lindal,V. Lindenstruth,S. W. Lindsay,C. Lippmann,M. A. Lisa,V. Litichevskyi,A. Liu,H. M. Ljunggren,W. J. Llope,D. F. Lodato,V. Loginov,C. Loizides,P. Loncar,X. Lopez,E. López Torres,P. Luettig,J. R. Luhder,M. Lunardon,G. Luparello,M. Lupi,A. Maevskaya,M. Mager,S. M. Mahmood,A. Maire,R. D. Majka,M. Malaev,Q. W. Malik,L. Malinina,D. Mal’Kevich,P. Malzacher,A. Mamonov,V. Manko,F. Manso,V. Manzari,Y. Mao,M. Marchisone,J. Mareš,G. V. Margagliotti,A. Margotti,J. Margutti,A. Marín,C. Markert,M. Marquard,N. A. Martin,P. Martinengo,J. L. Martinez,M. I. Martínez,G. Martínez García,M. Martinez Pedreira,S. Masciocchi,M. Masera,A. Masoni,L. Massacrier,E. Masson, A. Mastroserio,A. M. Mathis,P. F. T. Matuoka,A. Matyja,C. Mayer,M. Mazzilli,M. A. Mazzoni,F. Meddi,Y. Melikyan,A. Menchaca-Rocha,E. Meninno,M. Meres,S. Mhlanga,Y. Miake,L. Micheletti,M. M. Mieskolainen,D. L. Mihaylov,K. Mikhaylov,A. Mischke,A. N. Mishra,D. Miśkowiec,J. Mitra,C. M. Mitu,N. Mohammadi,A. P. Mohanty,B. Mohanty,M. Mohisin Khan,D. A. Moreira De Godoy,L. A. P. Moreno,S. Moretto,A. Morreale,A. Morsch,T. Mrnjavac,V. Muccifora,E. Mudnic,D. Mühlheim,S. Muhuri,M. Mukherjee,J. D. Mulligan,M. G. Munhoz,K. Münning,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,A. Narayan,M. U. Naru,A. F. Nassirpour,C. Nattrass,S. R. Navarro,K. Nayak,R. Nayak,T. K. Nayak,S. Nazarenko,R. A. Negrao De Oliveira,L. Nellen,S. V. Nesbo,G. Neskovic,F. Ng,M. Nicassio,J. Niedziela,B. S. Nielsen,S. Nikolaev,S. Nikulin,V. Nikulin,F. Noferini,P. Nomokonov,G. Nooren,J. C. C. Noris,J. Norman,A. Nyanin, J. Nystrand,M. Ogino,H. Oh,A. Ohlson,J. Oleniacz,A. C. Oliveira Da Silva,M. H. Oliver,J. Onderwaater,C. Oppedisano,R. Orava,M. Oravec,A. Ortiz Velasquez, A. Oskarsson,J. Otwinowski,K. Oyama,Y. Pachmayer,V. Pacik,D. Pagano,G. Paić,P. Palni,J. Pan,A. K. Pandey,S. Panebianco,V. Papikyan,P. Pareek,J. Park,J. E. Parkkila,S. Parmar,A. Passfeld,S. P. Pathak,R. N. Patra,B. Paul,H. Pei,T. Peitzmann,X. Peng,L. G. Pereira,H. Pereira Da Costa,D. Peresunko,E. Perez Lezama,V. Peskov,Y. Pestov,V. Petráček

semanticscholar(2019)

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摘要
Article history: Received 27 September 2018 Received in revised form 28 November 2018 Accepted 13 December 2018 Available online 18 December 2018 Editor: L. Rolandi We present the first measurements of femtoscopic correlations between the KS and K± particles in pp collisions at √ s = 7 TeV measured by the ALICE experiment. The observed femtoscopic correlations are consistent with final-state interactions proceeding solely via the a0(980) resonance. The extracted kaon source radius and correlation strength parameters for KS K− are found to be equal within the experimental uncertainties to those for KSK+. Results of the present study are compared with those from identical-kaon femtoscopic studies also performed with pp collisions at √ s = 7 TeV by ALICE and with a KSK± measurement in Pb–Pb collisions at √ sNN = 2.76 TeV. Combined with the Pb–Pb results, our pp analysis is found to be compatible with the interpretation of the a0(980) having a tetraquark structure instead of that of a diquark. © 2018 Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.
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