Neutral pion and eta meson production at midrapidity in Pb-Pb collisions at root S-NN=2.76 TeV

Neutral pion and eta meson production at midrapidity in Pb-Pb collisions at root S-NN=2.76 TeV
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根部 Pb-Pb 碰撞中中性 π 介子和 eta 介子的产生 S-NN=2.76 TeV

DOI:
10.1103/physrevc.98.044901
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发表时间:
2018
期刊:
影响因子:
3.1
通讯作者:
Y. Mao课题参与者
Y. Mao课题参与者
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
ALICE Collaboration;H. Zhang分析作者;Y. Mao课题参与者

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相似文献

利用大型强子对撞机(LHC)上的ALICE实验,在~ 2.76TeV的中心和半中心Pb-Pb碰撞中,测量了中快度下横动量范围为120的中性π介子和介子的产生.这些结果是使用光子转换方法以及光子光谱仪(PHOS)和电磁量热仪探测器获得的。这些结果将ALICE测量的上限从12个扩展到20个,并首次在LHC上测量了重离子碰撞中的介子产生。两个中心点的比值相似,在较高的平台值为0.457。在Pb-Pb碰撞中观察到与介子产生量相似的抑制,这种抑制相对于以二元核子-核子碰撞数为尺度的碰撞中的介子产生量而言。我们讨论的结果在次领先阶(NLO)pQCD预测和流体动力学模型。测量结果表明,在610范围内,比在较低的质心能量下观察到的抑制更强。对于3,强子化模型描述了结果,而对于一些张力观察。
Neutral pion andmeson production in the transverse momentum range 120have been measured at midrapidity by the ALICE experiment at the Large Hadron Collider (LHC) in central and semicentral Pb-Pb collisions at= 2.76 TeV. These results were obtained using the photon conversion method as well as the Photon Spectrometer (PHOS) and Electromagnetic Calorimeter detectors. The results extend the upperreach of the previous ALICEmeasurements from 12 to 20and present the first measurement ofmeson production in heavy-ion collisions at the LHC. Theratio is similar for the two centralities and reaches at higha plateau value of 0.457. A suppression of similar magnitude forandmeson production is observed in Pb-Pb collisions with respect to their production incollisions scaled by the number of binary nucleon-nucleon collisions. We discuss the results in terms of Next to Leading Order (NLO) pQCD predictions and hydrodynamic models. The measurements show a stronger suppression than observed at lower center-of-mass energies in therange 610. For3, hadronization models describe theresults while for thesome tension is observed.
DOI: 10.1016/0370-2693(90)91409-5
发表时间: 1990-07
期刊: Physics Letters B
影响因子: 4.4
作者:
M. Gyulassy;M. Plümer
通讯作者: M. Gyulassy;M. Plümer
DOI: 10.5040/9781501365287.917
发表时间: 1996
影响因子: 5.9
作者:
F. Torrent-Guasp
通讯作者: F. Torrent-Guasp
影响因子: 1.4
作者:
T. Matulewicz;E. Grosse;H. Emling;R. Freifelder;H. Grein;W. Henning;N. Herrmann;R. Holzmann
通讯作者: T. Matulewicz;E. Grosse;H. Emling;R. Freifelder;H. Grein;W. Henning;N. Herrmann;R. Holzmann
DOI: 10.1140/epjc/s10052-013-2456-0
发表时间: 2013
期刊: The European physical journal. C, Particles and fields
影响因子: --
作者:
ALICE Collaboration;Abelev B;Adam J;Adamová D;Adare AM;Aggarwal MM;Aglieri Rinella G;Agocs AG;Agostinelli A;Aguilar Salazar S;Ahammed Z;Ahmad Masoodi A;Ahmad N;Ahn SA;Ahn SU;Akindinov A;Aleksandrov D;Alessandro B;Alfaro Molina R;Alici A;Alkin A;Almaráz Aviña E;Alme J;Alt T;Altini V;Altinpinar S;Altsybeev I;Andrei C;Andronic A;Anguelov V;Anielski J;Anson C;Antičić T;Antinori F;Antonioli P;Aphecetche L;Appelshäuser H;Arbor N;Arcelli S;Arend A;Armesto N;Arnaldi R;Aronsson T;Arsene IC;Arslandok M;Asryan A;Augustinus A;Averbeck R;Awes TC;Äystö J;Azmi MD;Bach M;Badalà A;Baek YW;Bailhache R;Bala R;Baldini Ferroli R;Baldisseri A;Baldit A;Baltasar Dos Santos Pedrosa F;Bán J;Baral RC;Barbera R;Barile F;Barnaföldi GG;Barnby LS;Barret V;Bartke J;Basile M;Bastid N;Basu S;Bathen B;Batigne G;Batyunya B;Baumann C;Bearden IG;Beck H;Behera NK;Belikov I;Bellini F;Bellwied R;Belmont-Moreno E;Bencedi G;Beole S;Berceanu I;Bercuci A;Berdnikov Y;Berenyi D;Bergognon AA;Berzano D;Betev L;Bhasin A;Bhati AK;Bhom J;Bianchi N;Bianchi L;Bianchin C;Bielčík J;Bielčíková J;Bilandzic A;Bjelogrlic S;Blanco F;Blanco F;Blau D;Blume C;Boccioli M;Bock N;Böttger S;Bogdanov A;Bøggild H;Bogolyubsky M;Boldizsár L;Bombara M;Book J;Borel H;Borissov A;Bose S;Bossú F;Botje M;Botta E;Boyer B;Braidot E;Braun-Munzinger P;Bregant M;Breitner T;Browning TA;Broz M;Brun R;Bruna E;Bruno GE;Budnikov D;Buesching H;Bufalino S;Busch O;Buthelezi Z;Caballero Orduna D;Caffarri D;Cai X;Caines H;Calvo Villar E;Camerini P;Canoa Roman V;Cara Romeo G;Carena F;Carena W;Carlin Filho N;Carminati F;Casanova Díaz A;Castillo Castellanos J;Castillo Hernandez JF;Casula EA;Catanescu V;Cavicchioli C;Ceballos Sanchez C;Cepila J;Cerello P;Chang B;Chapeland S;Charvet JL;Chattopadhyay S;Chattopadhyay S;Chawla I;Cherney M;Cheshkov C;Cheynis B;Chibante Barroso V;Chinellato DD;Chochula P;Chojnacki M;Choudhury S;Christakoglou P;Christensen CH;Christiansen P;Chujo T;Chung SU;Cicalo C;Cifarelli L;Cindolo F;Cleymans J;Coccetti F;Colamaria F;Colella 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通讯作者: Zyzak M
DOI: 10.1140/epjc/s10052-015-3392-y
发表时间: 2015-01
期刊: The European Physical Journal C
影响因子: --
作者:
A. Bylinkin;N. Chernyavskaya;A. Rostovtsev
通讯作者: A. Bylinkin;N. Chernyavskaya;A. Rostovtsev