Measuring K$^0_{\rm S}$K$^{\rm \pm}$ interactions using Pb-Pb collisions at ${\sqrt{s_{\rm NN}}=2.76}$ TeV

• Published in: Physics letters. B 2017-04, Vol.774, p.64-77
• Main Authors: Acharya, Shreyasi, Adamova, Dagmar, Adolfsson, Jonatan, Aggarwal, Madan Mohan, Aglieri Rinella, Gianluca, Agnello, Michelangelo, Agrawal, Neelima, Ahammed, Zubayer, Ahmad, Nazeer, Ahn, Sang Un, Aiola, Salvatore, Akindinov, Alexander, Alam, Sk Noor, Bazo Alba, Jose Luis, Silva de Albuquerque, Danilo, Aleksandrov, Dmitry, Alessandro, Bruno, Alfaro Molina, Jose Ruben, Alici, Andrea, Alkin, Anton, Alme, Johan, Alt, Torsten, Altenkamper, Lucas, Altsybeev, Igor, Alves Garcia Prado, Caio, An, Mangmang, Andrei, Cristian, Andreou, Dimitra, Andrews, Harry Arthur, Andronic, Anton, Anguelov, Venelin, Anson, Christopher Daniel, Anticic, Tome, Antinori, Federico, Antonioli, Pietro, Anwar, Rafay, Aphecetche, Laurent Bernard, Appelshaeuser, Harald, Arcelli, Silvia, Arnaldi, Roberta, Arnold, Oliver Werner, Arsene, Ionut Cristian, Arslandok, Mesut, Audurier, Benjamin, Augustinus, Andre, Averbeck, Ralf Peter, Azmi, Mohd Danish, Badala, Angela, Baek, Yong Wook, Bagnasco, Stefano, Bailhache, Raphaelle Marie, Bala, Renu, Baldisseri, Alberto, Ball, Markus, Baral, Rama Chandra, Barbano, Anastasia Maria, Barbera, Roberto, Barile, Francesco, Barioglio, Luca, Barnafoldi, Gergely Gabor, Barnby, Lee Stuart, Ramillien Barret, Valerie, Bartalini, Paolo, Barth, Klaus, Bartke, Jerzy Gustaw, Bartsch, Esther, Basile, Maurizio, Bastid, Nicole, Basu, Sumit, Bathen, Bastian, Batigne, Guillaume, Batista Camejo, Arianna, Batyunya, Boris, Batzing, Paul Christoph, Bearden, Ian Gardner, Beck, Hans, Bedda, Cristina, Behera, Nirbhay Kumar, Belikov, Iouri, Bellini, Francesca, Bello Martinez, Hector, Bellwied, Rene, Espinoza Beltran, Lucina Gabriela, Belyaev, Vladimir, Bencedi, Gyula, Beole, Stefania, Bercuci, Alexandru, Berdnikov, Yaroslav, Berenyi, Daniel, Bertens, Redmer Alexander, Berzano, Dario, Betev, Latchezar, Bhasin, Anju, Bhat, Inayat Rasool, Bhati, Ashok Kumar, Bhattacharjee, Buddhadeb, Bhom, Jihyun, Bianchi, Livio, Bianchi, Nicola, Bianchin, Chiara
• Format: Article
• Language: English
• Subjects: High Energy Physics - Experiment; Nuclear Experiment; Physics
• ISSN: 0370-2693
• DOI: 10.1016/j.physletb.2017.09.009

We present the first ever measurements of femtoscopic correlations between the KS0 and K ± particles. The analysis was performed on the data from Pb–Pb collisions at sNN=2.76 TeV measured by the ALICE experiment. The observed femtoscopic correlations are consistent with final-state interactions proceeding via the a0(980) resonance. The extracted kaon source radius and correlation strength parameters for KS0K− are found to be equal within the experimental uncertainties to those for KS0K+ . Comparing the results of the present study with those from published identical-kaon femtoscopic studies by ALICE, mass and coupling parameters for the a0 resonance are tested. Our results are also compatible with the interpretation of the a0 having a tetraquark structure instead of that of a diquark.