Details

Autor(en) / Beteiligte

• Abelev, B.
• Adam, J.
• Adamová, D.
• Aggarwal, M.M.
• Agnello, M.
• Agostinelli, A.
• Agrawal, N.
• Ahammed, Z.
• Ahmad, N.
• Ahmed, I.
• Ahn, S.U.
• Ahn, S.A.
• Aimo, I.
• Aiola, S.
• Ajaz, M.
• Akindinov, A.
• Alam, S.N.
• Aleksandrov, D.
• Alessandro, B.
• Alexandre, D.
• Alici, A.
• Alkin, A.
• Alme, J.
• Alt, T.
• Altinpinar, S.
• Altsybeev, I.
• Alves Garcia Prado, C.
• Andrei, C.
• Andronic, A.
• Anguelov, V.
• Anielski, J.
• Anticic, T.
• Antinori, F.
• Antonioli, P.
• Aphecetche, Laurent
• Appelshäuser, H.
• Arbor, N.
• Arcelli, S.
• Armesto, N.
• Arnaldi, R.
• Aronsson, T.
• Arsene, I.C.
• Arslandok, M.
• Augustinus, A.
• Averbeck, R.
• Awes, T.C.
• Azmi, M.D.
• Bach, M.
• Badalà, A.
• Baek, Y.W.
• Bagnasco, S.
• Bailhache, R.
• Bala, R.
• Baldisseri, A.
• Baltasar dos Santos Pedrosa, F.
• Baral, R.C.
• Barbera, R.
• Barile, F.
• Barnaföldi, G.G.
• Barnby, L.S.
• Barret, V.
• Bartke, J.
• Basile, M.
• Bastid, N.
• Basu, S.
• Bathen, B.
• Batigne, Guillaume
• Batyunya, B.
• Batzing, P.C.
• Baumann, Cédric
• Bearden, I.G.
• Beck, H.
• Bedda, C.
• Behera, N.K.
• Belikov, I.
• Bellini, F.
• Bellwied, R.
• Belmont-Moreno, E.
• Belmont Iii, R.
• Belyaev, V.
• Bencedi, G.
• Beole, S.
• Berceanu, I.
• Bercuci, A.
• Berdnikov, Y.
• Berenyi, D.
• Berger, M.E.
• Bertens, R.A.
• Berzano, D.
• Betev, L.
• Bhasin, A.
• Bhat, I.R.
• Bhati, A.K.
• Bhattacharjee, B.
• Bhom, J.
• Bianchi, L.
• Bianchi, N.
• Bianchin, C.
• Bielcík, J.
• Bielcíková, J.

Titel

Freeze-out radii extracted from three-pion cumulantsin pp, p–Pb andPb–Pb collisions at the LHC

Ist Teil von

• Physics letters. B, 2014, Vol.739, p.139-151

Ort / Verlag

Elsevier

Erscheinungsjahr

2014

Quelle

ScienceDirect

Beschreibungen/Notizen

• In high-energy collisions, the spatio-temporal size of the particle production region can be measured using the Bose–Einstein correlations of identical bosons at low relative momentum. The source radii are typically extracted using two-pion correlations, and characterize the system at the last stage of interaction, called kinetic freeze-out. In low-multiplicity collisions, unlike in high-multiplicity collisions, two-pion correlations are substantially altered by background correlations, e.g. mini-jets. Such correlations can be suppressed using three-pion cumulant correlations. We present the first measurements of the size of the system at freeze-out extracted from three-pion cumulant correlations in pp, p–Pb and Pb–Pb collisions at the LHC with ALICE. At similar multiplicity, the invariant radii extracted in p–Pb collisions are found to be 5–15% larger than those in pp, while those in Pb–Pb are 35–55% larger than those in p–Pb. Our measurements disfavor models which incorporate substantially stronger collective expansion in p–Pb as compared to pp collisions at similar multiplicity.