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K_{S}^{0} and Λ Production in Pb-Pb Collisions at sqrt[s_{NN}]=2.76 TeV.

Abelev, B ; Adam, J ; Adamová, D ; Adare, A M ; Aggarwal, M M ; Aglieri Rinella, G ; Agnello, M ; Agocs, A G ; Agostinelli, A and Ahammed, Z , et al. (2013) In Physical Review Letters 111(22).
Abstract
The ALICE measurement of K_{S}^{0} and Λ production at midrapidity in Pb-Pb collisions at sqrt[s_{NN}]=2.76 TeV is presented. The transverse momentum (p_{T}) spectra are shown for several collision centrality intervals and in the p_{T} range from 0.4 GeV/c (0.6 GeV/c for Λ) to 12 GeV/c. The p_{T} dependence of the Λ/K_{S}^{0} ratios exhibits maxima in the vicinity of 3 GeV/c, and the positions of the maxima shift towards higher p_{T} with increasing collision centrality. The magnitude of these maxima increases by almost a factor of three between most peripheral and most central Pb-Pb collisions. This baryon excess at intermediate p_{T} is not observed in pp interactions at sqrt[s]=0.9 TeV and at sqrt[s]=7 TeV. Qualitatively, the baryon... (More)
The ALICE measurement of K_{S}^{0} and Λ production at midrapidity in Pb-Pb collisions at sqrt[s_{NN}]=2.76 TeV is presented. The transverse momentum (p_{T}) spectra are shown for several collision centrality intervals and in the p_{T} range from 0.4 GeV/c (0.6 GeV/c for Λ) to 12 GeV/c. The p_{T} dependence of the Λ/K_{S}^{0} ratios exhibits maxima in the vicinity of 3 GeV/c, and the positions of the maxima shift towards higher p_{T} with increasing collision centrality. The magnitude of these maxima increases by almost a factor of three between most peripheral and most central Pb-Pb collisions. This baryon excess at intermediate p_{T} is not observed in pp interactions at sqrt[s]=0.9 TeV and at sqrt[s]=7 TeV. Qualitatively, the baryon enhancement in heavy-ion collisions is expected from radial flow. However, the measured p_{T} spectra above 2 GeV/c progressively decouple from hydrodynamical-model calculations. For higher values of p_{T}, models that incorporate the influence of the medium on the fragmentation and hadronization processes describe qualitatively the p_{T} dependence of the Λ/K_{S}^{0} ratio. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
111
issue
22
article number
222301
publisher
American Physical Society
external identifiers
  • wos:000327317200003
  • pmid:24329443
  • scopus:84888606232
ISSN
1079-7114
DOI
10.1103/PhysRevLett.111.222301
language
English
LU publication?
yes
id
014bcf89-dd6b-46af-b1f8-64d0c58063f7 (old id 4223905)
date added to LUP
2016-04-01 09:55:36
date last changed
2023-01-01 23:26:15
@article{014bcf89-dd6b-46af-b1f8-64d0c58063f7,
  abstract     = {{The ALICE measurement of K_{S}^{0} and Λ production at midrapidity in Pb-Pb collisions at sqrt[s_{NN}]=2.76 TeV is presented. The transverse momentum (p_{T}) spectra are shown for several collision centrality intervals and in the p_{T} range from 0.4 GeV/c (0.6 GeV/c for Λ) to 12 GeV/c. The p_{T} dependence of the Λ/K_{S}^{0} ratios exhibits maxima in the vicinity of 3 GeV/c, and the positions of the maxima shift towards higher p_{T} with increasing collision centrality. The magnitude of these maxima increases by almost a factor of three between most peripheral and most central Pb-Pb collisions. This baryon excess at intermediate p_{T} is not observed in pp interactions at sqrt[s]=0.9 TeV and at sqrt[s]=7 TeV. Qualitatively, the baryon enhancement in heavy-ion collisions is expected from radial flow. However, the measured p_{T} spectra above 2 GeV/c progressively decouple from hydrodynamical-model calculations. For higher values of p_{T}, models that incorporate the influence of the medium on the fragmentation and hadronization processes describe qualitatively the p_{T} dependence of the Λ/K_{S}^{0} ratio.}},
  author       = {{Abelev, B and Adam, J and Adamová, D and Adare, A M and Aggarwal, M M and Aglieri Rinella, G and Agnello, M and Agocs, A G and Agostinelli, A and Ahammed, Z and Ahmad, N and Ahmad Masoodi, A and Ahmed, I and Ahn, S U and Ahn, S A and Aimo, I and Aiola, S and Ajaz, M and Akindinov, A and Aleksandrov, D and Alessandro, B and Alexandre, D and Alici, A and Alkin, A and Alme, J and Alt, T and Altini, V and Altinpinar, S and Altsybeev, I and Alves Garcia Prado, C and Andrei, C and Andronic, A and Anguelov, V and Anielski, J and Antičić, T and Antinori, F and Antonioli, P and Aphecetche, L and Appelshäuser, H and Arbor, N and Arcelli, S and Armesto, N and Arnaldi, R and Aronsson, T and Arsene, I C and Arslandok, M and Augustinus, A and Averbeck, R and Awes, T C and Azmi, M D and Bach, M and Badalà, A and Baek, Y W and Bailhache, R and Bairathi, V and Bala, R and Baldisseri, A and Baltasar Dos Santos Pedrosa, F and Bán, J and Baral, R C and Barbera, R and Barile, F and Barnaföldi, G G and Barnby, L S and Barret, V and Bartke, J and Basile, M and Bastid, N and Basu, S and Bathen, B and Batigne, G and Batyunya, B and Batzing, P C and Baumann, C and Bearden, I G and Beck, H and Behera, N K and Belikov, I and Bellini, F and Bellwied, R and Belmont-Moreno, E and Bencedi, G and Beole, S and Berceanu, I and Bercuci, A and Berdnikov, Y and Berenyi, D and Bergognon, A A E and Bertens, R A and Berzano, D and Betev, L and Bhasin, A and Bhati, A K and Bhom, J and Bianchi, L and Bianchi, N and Bielčík, J and Bielčíková, J and Bilandzic, A and Bjelogrlic, S and Blanco, F and Blanco, F and Blau, D and Blume, C and Bock, F and Bogdanov, A and Bøggild, H and Bogolyubsky, M and Boldizsár, L and Bombara, M and Book, J and Borel, H and Borissov, A and Bornschein, J and Botje, M and Botta, E and Böttger, S and Braun-Munzinger, P and Bregant, M and Breitner, T and Broker, T A and Browning, T A and Broz, M and Brun, R and Bruna, E and Bruno, G E and Budnikov, D and Buesching, H and Bufalino, S and Buncic, P and Busch, O and Buthelezi, Z and Caffarri, D and Cai, X and Caines, H and Caliva, A and Calvo Villar, E and Camerini, P and Canoa Roman, V and Cara Romeo, G and Carena, F and Carena, W and Carminati, F and Casanova Díaz, A and Castillo Castellanos, J and Casula, E A R and Catanescu, V and Cavicchioli, C and Ceballos Sanchez, C and Cepila, J and Cerello, P and Chang, B and Chapeland, S and Charvet, J L and Chattopadhyay, S and Chattopadhyay, S and Cherney, M and Cheshkov, C and Cheynis, B and Chibante Barroso, V and Chinellato, D D and Chochula, P and Chojnacki, M and Choudhury, S and Christakoglou, P and Christensen, C H and Christiansen, Peter and Chujo, T and Chung, S U and Cicalo, C and Cifarelli, L and Cindolo, F and Cleymans, J and Colamaria, F and Colella, D and Collu, A and Colocci, M and Conesa Balbastre, G and Conesa Del Valle, Z and Connors, M E and Contin, G and Contreras, J G and Cormier, T M and Corrales Morales, Y and Cortese, P and Cortés Maldonado, I and Cosentino, M R and Costa, F and Crochet, P and Cruz Albino, R and Cuautle, E and Cunqueiro, L and Dainese, A and Dang, R and Danu, A and Das, K and Das, D and Das, I and Dash, A and Dash, S and De, S and Delagrange, H and Deloff, A and Dénes, E and Deppman, A and D'Erasmo, G and de Barros, G O V and De Caro, A and de Cataldo, G and de Cuveland, J and De Falco, A and De Gruttola, D and De Marco, N and De Pasquale, S and de Rooij, R and Diaz Corchero, M A and Dietel, T and Divià, R and Di Bari, D and Di Giglio, C and Di Liberto, S and Di Mauro, A and Di Nezza, P and Djuvsland, O and Dobrin, A and Dobrowolski, T and Dönigus, B and Dordic, O and Dubey, A K and Dubla, A and Ducroux, L and Dupieux, P and Dutta Majumdar, A K and Elia, D and Emschermann, D and Engel, H and Erazmus, B and Erdal, H A and Eschweiler, D and Espagnon, B and Estienne, M and Esumi, S and Evans, D and Evdokimov, S and Eyyubova, G and Fabris, D and Faivre, J and Falchieri, D and Fantoni, A 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Jimenez Bustamante, R T and Jones, P G and Jung, H and Jusko, A and Kalcher, S and Kaliňák, P and Kalweit, A and Kang, J H and Kaplin, V and Kar, S and Karasu Uysal, A and Karavichev, O and Karavicheva, T and Karpechev, E and Kazantsev, A and Kebschull, U and Keidel, R and Ketzer, B and Khan, M M and Khan, P and Khan, S A and Khanzadeev, A and Kharlov, Y and Kileng, B and Kim, T and Kim, B and Kim, D J and Kim, D W and Kim, J S and Kim, M and Kim, M and Kim, S and Kirsch, S and Kisel, I and Kiselev, S and Kisiel, A and Kiss, G and Klay, J L and Klein, J and Klein-Bösing, C and Kluge, A and Knichel, M L and Knospe, A G and Kobdaj, C and Köhler, M K and Kollegger, T and Kolojvari, A and Kondratiev, V and Kondratyeva, N and Konevskikh, A and Kovalenko, V and Kowalski, M and Kox, S and Koyithatta Meethaleveedu, G and Kral, J and Králik, I and Kramer, F and Kravčáková, A and Krelina, M and Kretz, M and Krivda, M and Krizek, F and Krus, M and Kryshen, E and Krzewicki, M and Kucera, V and 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Petráček, V and Petran, M and Petris, M and Petrov, P and Petrovici, M and Petta, C and Piano, S and Pikna, M and Pillot, P and Pinazza, O and Pinsky, L and Pitz, N and Piyarathna, D B and Planinic, M and Płoskoń, M and Pluta, J and Pochybova, S and Podesta-Lerma, P L M and Poghosyan, M G and Polichtchouk, B and Pop, A and Porteboeuf-Houssais, S and Pospíšil, V and Potukuchi, B and Prasad, S K and Preghenella, R and Prino, F and Pruneau, C A and Pshenichnov, I and Puddu, G and Punin, V and Putschke, J and Qvigstad, H and Rachevski, A and Rademakers, A and Rak, J and Rakotozafindrabe, A and Ramello, L and Raniwala, S and Raniwala, R and Räsänen, S S and Rascanu, B T and Rathee, D and Rauch, W and Rauf, A W and Razazi, V and Read, K F and Real, J S and Redlich, K and Reed, R J and Rehman, A and Reichelt, P and Reicher, M and Reidt, F and Renfordt, R and Reolon, A R and Reshetin, A and Rettig, F and Revol, J-P and Reygers, K and Riccati, L and Ricci, R A and Richert, Tuva and Richter, M and Riedler, P and Riegler, W and Riggi, F and Rivetti, A and Rodríguez Cahuantzi, M and Rodriguez Manso, A and Røed, K and Rogochaya, E and Rohni, S and Rohr, D and Röhrich, D and Romita, R and Ronchetti, F and Rosnet, P and Rossegger, S and Rossi, A and Roy, P and Roy, C and Rubio Montero, A J and Rui, R and Russo, R and Ryabinkin, E and Rybicki, A and Sadovsky, S and Safařík, K and Sahoo, R and Sahu, P K and Saini, J and Sakaguchi, H and Sakai, S and Sakata, D and Salgado, C A and Salzwedel, J and Sambyal, S and Samsonov, V and Sanchez Castro, X and Sándor, L and Sandoval, A and Sano, M and Santagati, G and Santoro, R and Sarkar, D and Scapparone, E and Scarlassara, F and Scharenberg, R P and Schiaua, C and Schicker, R and Schmidt, C and Schmidt, H R and Schuchmann, S and Schukraft, J and Schulc, M and Schuster, T and Schutz, Y and Schwarz, K and Schweda, K and Scioli, G and Scomparin, E and Scott, R and Scott, P A and Segato, G and Selyuzhenkov, I and Seo, J and Serci, S and Serradilla, E and Sevcenco, A and Shabetai, A and Shabratova, G and Shahoyan, R and Sharma, S and Sharma, N and Shigaki, K and Shtejer, K and Sibiriak, Y and Siddhanta, S and Siemiarczuk, T and Silvermyr, D and Silvestre, C and Simatovic, G and Singaraju, R and Singh, R and Singha, S and Singhal, V and Sinha, B C and Sinha, T and Sitar, B and Sitta, M and Skaali, T B and Skjerdal, K and Smakal, R and Smirnov, N and Snellings, R J M and Soltz, R and Song, M and Song, J and Soos, C and Soramel, F and Spacek, M and Sputowska, I and Spyropoulou-Stassinaki, M and Srivastava, B K and Stachel, J and Stan, I and Stefanek, G and Steinpreis, M and Stenlund, Evert and Steyn, G and Stiller, J H and Stocco, D and Stolpovskiy, M and Strmen, P and Suaide, A A P and Subieta Vásquez, M A and Sugitate, T and Suire, C and Suleymanov, M and Sultanov, R and Sumbera, M and Susa, T and Symons, T J M and Szanto de Toledo, A and Szarka, I and Szczepankiewicz, A and Szymański, M and Takahashi, J and Tangaro, M A and Tapia Takaki, J D and Tarantola Peloni, A and Tarazona Martinez, A and Tauro, A and Tejeda Muñoz, G and Telesca, A and Terrevoli, C and Ter Minasyan, A and Thäder, J and Thomas, D and Tieulent, R and Timmins, A R and Toia, A and Torii, H and Trubnikov, V and Trzaska, W H and Tsuji, T and Tumkin, A and Turrisi, R and Tveter, T S and Ulery, J and Ullaland, K and Ulrich, J and Uras, A and Urciuoli, G M and Usai, G L and Vajzer, M and Vala, M and Valencia Palomo, L and Vande Vyvre, P and Vannucci, L and Van Hoorne, J W and van Leeuwen, M and Vargas, A and Varma, R and Vasileiou, M and Vasiliev, A and Vechernin, V and Veldhoen, M and Venaruzzo, M and Vercellin, E and Vergara, S and Vernet, R and Verweij, M and Vickovic, L and Viesti, G and Viinikainen, J and Vilakazi, Z and Villalobos Baillie, O and Vinogradov, A and Vinogradov, L and Vinogradov, Y and Virgili, T and Viyogi, Y P and Vodopyanov, A and Völkl, M A and Voloshin, S and Voloshin, K and Volpe, G and von Haller, B and Vorobyev, I and Vranic, D and Vrláková, J and Vulpescu, B and Vyushin, A and Wagner, B and Wagner, V and Wagner, J and Wang, Y and Wang, Y and Wang, M and Watanabe, D and Watanabe, K and Weber, M and Wessels, J P and Westerhoff, U and Wiechula, J and Wikne, J and Wilde, M and Wilk, G and Wilkinson, J and Williams, M C S and Windelband, B and Winn, M and Xiang, C and Yaldo, C G and Yamaguchi, Y and Yang, H and Yang, P and Yang, S and Yano, S and Yasnopolskiy, S and Yi, J and Yin, Z and Yoo, I-K and Yushmanov, I and Zaccolo, V and Zach, C and Zampolli, C and Zaporozhets, S and Zarochentsev, A and Závada, P and Zaviyalov, N and Zbroszczyk, H and Zelnicek, P and Zgura, I S and Zhalov, M and Zhang, F and Zhang, Y and Zhang, H and Zhang, X and Zhou, D and Zhou, Y and Zhou, F and Zhu, X and Zhu, J and Zhu, J and Zhu, H and Zichichi, A and Zimmermann, M B and Zimmermann, A and Zinovjev, G and Zoccarato, Y and Zynovyev, M and Zyzak, M}},
  issn         = {{1079-7114}},
  language     = {{eng}},
  number       = {{22}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{K_{S}^{0} and Λ Production in Pb-Pb Collisions at sqrt[s_{NN}]=2.76 TeV.}},
  url          = {{https://lup.lub.lu.se/search/files/1392103/4238576.pdf}},
  doi          = {{10.1103/PhysRevLett.111.222301}},
  volume       = {{111}},
  year         = {{2013}},
}