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Measuring KS0K± interactions using pp collisions at √s=7 TeV

  • Author(s): Acharya, S
  • Acosta, FT
  • Adamová, D
  • Adler, A
  • Adolfsson, J
  • Aggarwal, MM
  • Aglieri Rinella, G
  • Agnello, M
  • Agrawal, N
  • Ahammed, Z
  • Ahn, SU
  • Aiola, S
  • Akindinov, A
  • Al-Turany, M
  • Alam, SN
  • Albuquerque, DSD
  • Aleksandrov, D
  • Alessandro, B
  • Alfanda, HM
  • Alfaro Molina, R
  • Ali, Y
  • Alici, A
  • Alkin, A
  • Alme, J
  • Alt, T
  • Altenkamper, L
  • Altsybeev, I
  • Anaam, MN
  • Andrei, C
  • Andreou, D
  • Andrews, HA
  • Andronic, A
  • Angeletti, M
  • Anguelov, V
  • Anson, C
  • Antičić, T
  • Antinori, F
  • Antonioli, P
  • Anwar, R
  • Apadula, N
  • Aphecetche, L
  • Appelshäuser, H
  • Arcelli, S
  • Arnaldi, R
  • Arratia, M
  • Arsene, IC
  • Arslandok, M
  • Augustinus, A
  • Averbeck, R
  • Azmi, MD
  • Badalà, A
  • Baek, YW
  • Bagnasco, S
  • Bailhache, R
  • Bala, R
  • Baldisseri, A
  • Ball, M
  • Baral, RC
  • Barbano, AM
  • Barbera, R
  • Barile, F
  • Barioglio, L
  • Barnaföldi, GG
  • Barnby, LS
  • Barret, V
  • Bartalini, P
  • Barth, K
  • Bartsch, E
  • Bastid, N
  • Basu, S
  • Batigne, G
  • Batyunya, B
  • Batzing, PC
  • Bazo Alba, JL
  • Bearden, IG
  • Beck, H
  • Bedda, C
  • Behera, NK
  • Belikov, I
  • Bellini, F
  • Bello Martinez, H
  • Bellwied, R
  • Beltran, LGE
  • Belyaev, V
  • Bencedi, G
  • Beole, S
  • Bercuci, A
  • Berdnikov, Y
  • Berenyi, D
  • Bertens, RA
  • Berzano, D
  • Betev, L
  • Bhaduri, PP
  • Bhasin, A
  • Bhat, IR
  • Bhatt, H
  • Bhattacharjee, B
  • Bhom, J
  • Bianchi, A
  • Bianchi, L
  • et al.

Published Web Location

http://10.0.3.248/j.physletb.2018.12.033
No data is associated with this publication.
Abstract

We present the first measurements of femtoscopic correlations between the K 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 a (980) resonance. The extracted kaon source radius and correlation strength parameters for K K are found to be equal within the experimental uncertainties to those for K K . 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 K K measurement in Pb–Pb collisions at s =2.76 TeV. Combined with the Pb–Pb results, our pp analysis is found to be compatible with the interpretation of the a (980) having a tetraquark structure instead of that of a diquark. S 0 S S S NN 0 0 ± 0 − 0 + 0 ±

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