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Adler, S. S.; Afanasiev, S.; Aidala, C.; Ajitanand, N. N.; Akiba, Y.; Alexander, J.; Amirikas, R.; Aphecetche, L.; Aronson, S. H.; Averbeck, R.; Awes, T. C.; Azmoun, R.; Babintsev, V.; Baldisseri, A.; Barish, K. N.; Barnes, P. D.; Bassalleck, B.; Bathe, S.; Batsouli, S.; Baublis, V.; Bazilevsky, A.; Беликов, С.; Berdnikov, Y.; Bhagavatula, S.; Boissevain, J. G.; Borel, H.; Borenstein, S.; Brooks, M. L.; Brown, D. S.; Bruner, N.; Bucher, D.; Buesching, H.; Bumazhnov, V.; Bunce, G.; Burward-Hoy, J. M.; Butsyk, S.; Camard, X.; Chai, J. S.; Chand, P.; Chang, W. C.; Chernichenko, S.; Y., C.; Chiba, J.; Chiu, M.; Choi, I. J.; Choi, J.; Choudhury, R. K.; Chujo, T.; Chung, P.; Cianciolo, V.; Cobigo, Y.; Cole, B.; Constantin, P.; Csanád, M.; Csörgő, T.; d’Enterria, D.; David, G.; Delagrange, H.; Denisov, A.; Deshpande, A.; Desmond, E. J.; Devismes, A.; Dietzsch, O.; Drapier, O.; Drees, A.; Rietz, R. du; Durum, A.; Dutta, D.; Efremenko, Y. V.; Chenawi, K. El; Enokizono, A.; En’yo, H.; Esumi, S.; Ewell, L.; Fields, D. E.; Fleuret, F.; Fokin, S.; Fox, B. D.; Fraenkel, Z.; Frantz, J. E.; Franz, A.; Frawley, A. D.; Fung, S. Y.; Garpman, S.; Ghosh, Tarun Kanti; Glenn, A.; Gogiberidze, G.; Gonin, M.; Gösset, J.; Goto, Y.; Cassagnac, R. Granier de; Grau, N.; Greene, S.; Perdekamp, M. Grosse; Guryn, W.; Gustafsson, H.-Å.; Hachiya, T.; Haggerty, J. S.; Hamagaki, H.; Hansen, A. G.; Hartouni, E. P.; Harvey, M.; Hayano, R.; Hayashi, Naoki; He, X. Q.; Heffner, M.; Hemmick, T. K.; Heuser, J. M.; Hibino, M.; Hill, J. C.; Holzmann, W.; Homma, K.; Hong, B.; Hoover, A.; Ichihara, T.; Ikonnikov, V. V.; Imai, K.; Isenhower, D.; Ishihara, M.; Issah, M.; Isupov, A.; Jacak, B.; Jang, W. Y.; Jeong, Yu Seon; Jia, J.; Jinnouchi, O.; Johnson, B. M.; Johnson, S. C.; Joo, K. S.; Jouan, D.; Kametani, S.; Kamihara, N.; Kang, Joon Ho; Kapoor, S. S.; Katou, K.; Kelly, S.; Khachaturov, B.; Khanzadeev, A.; Kikuchi, Jun; Kim, D. H.; Kim, D. J.; Kim, D. W.; Kim, E.; Kim, G. B.; Kim, H. J.; Kistenev, E.; Kiyomichi, A.; Kiyoyama, K.; Klein-Boesing, Christian; Kobayashi, Hisao; Kochenda, L.; Kochetkov, V.; Koehler, D.; Kohama, T.; Kopytine, M.; Kotchetkov, D.; Kozlov, A.; Kroon, P. J.; Kuberg, C. H.; Kurita, K.; Kuroki, Y.; Kweon, M. J.; Kwon, Y.; Kyle, G. S.; Lacey, R.; Ladygin, V. P.; Lajoie, J. G.; Lebedev, A.; Leckey, S.; Lee, D. M.; Lee, S.; Leitch, M. J.; Li, X. H.; Lim, H.; Litvinenko, A.; Liu, M. X.; Liu, Y.; Maguire, C.; Makdisi, Y. I.; Malakhov, A.; Manko, V.; Mao, Y.; Martı́nez, G.; Marx, M.; Masui, H.; Matathias, F.; Matsumoto, T.; McGaughey, P. L.; Melnikov, E.; Messer, F.; Miake, Y.; Milan, J.; Miller, T. E.; Milov, A.; Mioduszewski, S.; Mischke, R. E.; Mishra, G. C.; Mitchell, J. T.; Mohanty, A. K.; Morrison, D. P.; Moss, J. M.; Mühlbacher, F.; Mukhopadhyay, D.; Muniruzzaman, M.; Murata, J.; Nagamiya, S.; Nagle, J. L.; Nagy, M. I.; Nakamura, T.; Nandi, B. K.; Nara, M.; Newby, J.; Nilsson, P.; Nyanin, A. S.; Nystrand, J.; O’Brien, E.; Ogilvie, C. A.; Ohnìshì, H.; Ojha, I. D.; Okada, K.; Ono, M.; Onuchìn, V.; Öskarsson, A.; Otterlund, I.; Oyama, K.; Ozawa, K.; Pal, D.; Palounek, A. P.T.; Pantuev, V.; Papavassiliou, V.; Park, J.; Parmar, A.; Pate, S. F.; Peitzmann, T.; Peng, J. C.; Peresedov, V.; Pinkenburg, C.; Pisani, R. P.; Plášil, F.; Purschke, M. L.; Purwar, A. K.; Rak, J.; Ravinovich, I.; Read, K. F.; Reuter, M.; Reygers, K.; Riabov, V.; Riabov, Y.; Roche, G.; Romana, A.; Rosati, M.; Rosnet, P.; Ryu, S. S.; Sadler, M. E.; Saito, N.; Sakaguchi, T.; Sakai, M.; Sakai, S.; Samsonov, V.; Sanfratello, L.; Santo, R.; Sato, H.; Sato, Susumu; Sawada, S.; Schütz, Y.; Semenov, V.; Seto, R.; Shaw, M. R.; Shea, T. K.; Shibata, T. A.; Shigaki, K.; Shiina, T.; Silva, C. L.; Silvermyr, D.; Sim, K. S.; Singh, C. P.; Singh, V.; Sivertz, M.; Soldatov, A.; Soltz, R. A.; Sondheim, W. E.; Sørensen, S. P.; Sourikova, I. V.; Staley, F.; Stankus, P. W.; Stenlund, E.; Stepanov, M.; Ster, A.; Stoll, S. P.; Sugitate, T.; Sullivan, J. P.; Takagui, E. M.; Taketani, A.; Tamai, M.; Tanaka, Kazuhiro; Tanaka, Y.; Tanida, K.; Tannenbaum, M. J.; Taranenko, A.; Tarján, P.; Tepe, J. D.; Thomas, T. L.; Tojo, J.; Torii, H.; Towell, R. S.; Tserruya, I.; Tsuruoka, H.; Tuli, S. K.; Tydesjö, H.; Tyurin, N.; Hecke, H. W. van; Velkovska, J.; Velkovsky, M.; Veszprémi, V.; Villatte, L.; Виноградов, А.; Volkov, М. А.; Vznuzdaev, E.; Wang, X. R.; Watanabe, Y.; White, S. N.; Wohn, F. K.; Woody, C.; Xie, W.; Yang, Y.; Yanovich, A.; Yokkaichi, S.; Young, G. R.; Yushmanov, I. E.; Zajc, W. A.; Zhang, C.; Zhou, S.; Zolin, L.

doi:10.1103/physrevlett.98.132301

Cited by 41 publications

(20 citation statements)

References 26 publications

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“…2 In fact, the core-halo separation always depends on the experimental two-track resolution. For example in PHENIX and STAR, two tracks are separable with a momentum difference of δQ larger than 4 to 5 MeV, corresponding to a spatial separability δx that dies off at about 40-50 fm [22,23]. Long tails extending to this region were recently observed by the PHENIX and NA49 collaborations at RHIC and CERN SPS energies [22,24].…”

Section: Bose-einstein Correlationsmentioning

confidence: 93%

Significant in-mediumη′mass reduction insNN
Vértesi
¹
,
Csörgő
²
,
Sziklai
³

2011
Phys. Rev. C
Self Cite

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In high energy heavy ion collisions a hot and dense medium is formed, where the U A (1) or chiral symmetry may temporarily be restored. As a consequence, the mass of the η ′ (958) mesons may be reduced to its quark model value, and the abundance of η ′ mesons at low p T may be enhanced by more than a factor of 10. The intercept parameter λ * of the charged pion Bose-Einstein correlations provides a sensitive observable of the possibly enhanced η ′ abundance. We have analyzed λ * (m T ) data from √ s NN = 200 GeV central Au+Au reactions measured at the BNL Relativistic Heavy Ion Collider (RHIC), using extensive Monte Carlo simulations based on six popular models for hadronic multiplicities. Based on the combined STAR and PHENIX data set, and on various systematic investigations of resonance multiplicities and model parameters, we conclude that in √ s NN = 200 GeV central Au+Au reactions the mass of the η ′ meson is reduced by ∆m * η ′ > 200 MeV, at the 99.9% confidence level in the considered model class. Such a significant η ′ mass modification may indicate the restoration of the U A (1) symmetry in a hot and dense hadronic matter and the return of the ninth "prodigal" Goldstone boson. A similar analysis of NA44 S+Pb data at top CERN Super Proton Synchrotron (SPS) energies showed no significant in-medium η ′ mass modification.

show abstract

Section: Bose-einstein Correlationsmentioning

confidence: 93%

Significant in-mediumη′mass reduction insNN
Vértesi
¹
,
Csörgő
²
,
Sziklai
³

2011
Phys. Rev. C
Self Cite

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“…is the twoparticle interaction kernel. Previous femtoscopy studies in heavy-ion collisions at CERN Super Proton Synchrotron [42], RHIC [43][44][45][46][47][48][49], and at the LHC [14] …”

Section: Fitting the Correlation Functionsmentioning

confidence: 99%

Two-pion femtoscopy inp-Pb collisions atsNN=5.02TeV

Adam¹,

Adamová²,

Aggarwal³

et al. 2015

Phys. Rev. C

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We report the results of the femtoscopic analysis of pairs of identical pions measured in p-Pb collisions at √ s NN = 5.02 TeV. Femtoscopic radii are determined as a function of event multiplicity and pair momentum in three spatial dimensions. As in the pp collision system, the analysis is complicated by the presence of sizable background correlation structures in addition to the femtoscopic signal. The radii increase with event multiplicity and decrease with pair transverse momentum. When taken at comparable multiplicity, the radii measured in p-Pb collisions, at high multiplicity and low pair transverse momentum, are 10%-20% higher than those observed in pp collisions but below those observed in A-A collisions. The results are compared to hydrodynamic predictions at large event multiplicity as well as discussed in the context of calculations based on gluon saturation.

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“…If the Coulomb or strong interaction between the particles (called final-state interaction or FSI) needs to be taken into account, then becomes the Bethe-Salpeter amplitude corresponding to the solution of the relevant quantum scattering problem, taken with the inverse time direction [45]. Previous studies at the RHIC [16][17][18]22,23,46,47] and at the LHC [36] approximated the source by a Gaussian, treating any difference between the real data and a Gaussian as a correction. This procedure was also universally used in all past pion femtoscopic analyses of heavy-ion collisions.…”

Section: B Fitting the Correlation Functionmentioning

confidence: 99%

“…Two-pion correlations at low relative momentum were first shown to be sensitive to the interaction volume of the emitting source inp + p collisions by Goldhaber et al 50 years ago [13]. Since then, they were studied in e + + e − [14], hadronand lepton-hadron [15], and heavy-ion [16][17][18][19][20][21][22][23][24][25] collisions. Especially in the heavy-ion case, two-particle femtoscopy has been developed into a precision tool to probe the dynamically generated spatial structure of the emitting system.…”

Section: Introductionmentioning

confidence: 99%

Centrality dependence of pion freeze-out radii in Pb-Pb collisions atsNN=2.76 TeV

et al. 2016

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We report on the measurement of freeze-out radii for pairs of identical-charge pions measured in Pb-Pb collisions at √ s NN = 2.76 TeV as a function of collision centrality and the average transverse momentum of the pair k T . Three-dimensional sizes of the system (femtoscopic radii), as well as direction-averaged onedimensional radii are extracted. The radii decrease with k T , following a power-law behavior. This is qualitatively consistent with expectations from a collectively expanding system, produced in hydrodynamic calculations. The radii also scale linearly with dN ch /dη 1/3 . This behavior is compared to world data on femtoscopic radii in heavy-ion collisions. While the dependence is qualitatively similar to results at smaller √ s NN , a decrease in the ratio R out /R side is seen, which is in qualitative agreement with a specific prediction from hydrodynamic models: a change from inside-out to outside-in freeze-out configuration. The results provide further evidence for the production of a collective, strongly coupled system in heavy-ion collisions at the CERN Large Hadron Collider.

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Evidence for a Long-Range Component in the Pion Emission Source inAu+AuCollisions atsNN=200 GeV<

Cited by 41 publications

References 26 publications

Significant in-mediumη′mass reduction insNN
Vértesi
¹
,
Csörgő
²
,
Sziklai
³

2011
Phys. Rev. C
Self Cite

Significant in-mediumη′mass reduction insNN
Vértesi
¹
,
Csörgő
²
,
Sziklai
³

2011
Phys. Rev. C
Self Cite

Two-pion femtoscopy inp-Pb collisions atsNN=5.02TeV

Centrality dependence of pion freeze-out radii in Pb-Pb collisions atsNN=2.76 TeV

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Evidence for a Long-Range Component in the Pion Emission Source inAu+AuCollisions atsNN=200 GeV<

Cited by 41 publications

References 26 publications

Significant in-mediumη′mass reduction insNN Vértesi1, Csörgő2, Sziklai3 2011Phys. Rev. CSelf Cite

Significant in-mediumη′mass reduction insNN Vértesi1, Csörgő2, Sziklai3 2011Phys. Rev. CSelf Cite

Two-pion femtoscopy inp-Pb collisions atsNN=5.02TeV

Centrality dependence of pion freeze-out radii in Pb-Pb collisions atsNN=2.76 TeV

Contact Info

Product

Resources

About

Significant in-mediumη′mass reduction insNN
Vértesi
¹
,
Csörgő
²
,
Sziklai
³

2011
Phys. Rev. C
Self Cite

Significant in-mediumη′mass reduction insNN
Vértesi
¹
,
Csörgő
²
,
Sziklai
³

2011
Phys. Rev. C
Self Cite