Measurement of energy flow, cross section and average inelasticity of forward neutrons produced in $$ \sqrt{s} $$ = 13 TeV proton-proton collisions with the LHCf Arm2 detector
Measurement of energy flow, cross section and average inelasticity of forward neutrons produced in $$ \sqrt{s} $$ = 13 TeV proton-proton collisions with the LHCf Arm2 detector
复制标题
使用 LHCf Arm2 探测器测量 $$ sqrt{s} $$ = 13 TeV 质子-质子碰撞中产生的正向中子的能量流、横截面和平均非弹性
DOI：
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复制
发表时间：
2020
影响因子：
5.4
通讯作者：
M. Ueno
中科院分区：
文献类型：
--
作者：
O. Adriani;E. Berti;L. Bonechi;M. Bongi;R. D’Alessandro;S. Detti;M. Haguenauer;Y. Itow;K. Kasahara;H. Menjo;Y. Muraki;K. Ohashi;P. Papini;S. Ricciarini;T. Sako;N. Sakurai;Kenta Sato;T. Tamura;A. Tiberio;S. Torii;A. Tricomi;W. Turner;M. Ueno
摘要
本文报道了S产生的前向中子(+反中子)的能流、截面和平均不弹性的测量结果。
S
=13TeV质子-质子碰撞。这些量是从欧洲核子研究中心大型强子对撞机上的LHCf Arm2探测器测量的包括微分产生截面得到的。测量是在六个伪快度区域中进行的：其中三个区域(η>；10.75，8.99<；η<；9.21和8.80<；η<；8.99)，尽管接受度较小，不确定度较大，但已在以前的工作中发表，而其余三个区域(10.06<；η<；10.75，9.65<；η<；10.06和8.65<；η<；8.80)是首次出现在这里。分析使用的是2015年6月获得的数据集，对应的积分光度为0.194 nb−1。将实验测量结果与几个用于模拟宇宙线空气簇射的强子相互作用模型的预期进行比较，没有一个发生器在选择用于分析的所有相空间中都有令人满意的一致性。任何模型都不能再现η>10.75的包含性差异生产截面，而结果仍然表明在较低的伪概率下存在显著但不那么严重的偏差。根据伪快度区域的不同，表现出与数据最好总体一致性的生成器要么是Sibyll 2.3，要么是EPOS-LHC。此外，除了最前沿的区域外，EPOS-LHC最好地再现了导出的能流和截面分布。最后，即使没有一个模型以令人满意的方式描述弹性分布，提取的平均非弹性与QGSJET II-04的值是一致的，而大多数其他生成器给出的值恰好位于实验不确定度之外。
Abstract
In this paper, we report the measurement of the energy flow, the cross section and the average inelasticity of forward neutrons (+ antineutrons) produced in $$ \sqrt{s} $$
s
= 13 TeV proton-proton collisions. These quantities are obtained from the inclusive differential production cross section, measured using the LHCf Arm2 detector at the CERN Large Hadron Collider. The measurements are performed in six pseudorapidity regions: three of them (η > 10.75, 8.99 < η < 9.21 and 8.80 < η < 8.99), albeit with smaller acceptance and larger uncertainties, were already published in a previous work, whereas the remaining three (10.06 < η < 10.75, 9.65 < η < 10.06 and 8.65 < η < 8.80) are presented here for the first time. The analysis was carried out using a data set acquired in June 2015 with a corresponding integrated luminosity of 0.194 nb−1. Comparing the experimental measurements with the expectations of several hadronic interaction models used to simulate cosmic ray air showers, none of these generators resulted to have a satisfactory agreement in all the phase space selected for the analysis. The inclusive differential production cross section for η > 10.75 is not reproduced by any model, whereas the results still indicate a significant but less serious deviation at lower pseudorapidities. Depending on the pseudorapidity region, the generators showing the best overall agreement with data are either SIBYLL 2.3 or EPOS-LHC. Furthermore, apart from the most forward region, the derived energy flow and cross section distributions are best reproduced by EPOS-LHC. Finally, even if none of the models describe the elasticity distribution in a satisfactory way, the extracted average inelasticity is consistent with the QGSJET II-04 value, while most of the other generators give values that lie just outside the experimental uncertainties.
影响因子：
5
作者：
Ostapchenko, S.;Bleicher, M.;Werner, K.
通讯作者：
Werner, K.
DOI：
10.1088/0954-3899/43/11/110201
发表时间：
2016-11
期刊：
Journal of Physics G
影响因子：
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作者：
K. Akiba;M. Akbiyik;M. Albrow;M. Arneodo;V. Avati;V. Avati;J. Baechler;O. Baillie;P. Bartalini;J. Bartels;S. Baur;C. Baus;W. Beaumont;U. Behrens;D. Berge;M. Berretti;M. Berretti;E. Bossini;R. Boussarie;S. Brodsky;M. Broz;M. Bruschi;P. Bussey;W. Byczynski;J. Noris;E. C. Villar;A. Campbell;F. Caporale;W. Carvalho;G. Chachamis;E. Chapon;C. Cheshkov;J. Chwastowski;R. Ciesielski;D. Chinellato;A. Cisek;V. Coco;P. Collins;J. G. Contreras;B. Cox;D. Damiao;P. Davis;M. Deile;D. d’Enterria;D. Druzhkin;B. Ducloué;B. Ducloué;R. Dumps;R. Dzhelyadin;P. Dziurdzia;M. Eliachevitch;P. Fassnacht;F. Ferro;S. Fichet;D. Figueiredo;D. Finogeev;R. Fiore;J. Forshaw;A. Medina;M. Gallinaro;A. Granik;G. Gersdorff;S. Giani;K. Golec-Biernat;V. Gonçalves;P. Göttlicher;K. Goulianos;J.-Y. Grosslord;L. Harland–Lang;H. Haevermaet;M. Hentschinski;R. Engel;G. Corral;J. Hollar;L. Huertas;D. Johnson;I. Katkov;O. Kepka;M. Khakzad;L. Kheyn;V. Khachatryan;V. Khoze;S. Klein;M. Klundert;F. Krauss;A. Kurepin;N. Kurepin;K. Kutak;E. Kuznetsova;G. Latino;P. Lebiedowicz;B. Lenzi;E. Lewandowska;S. Liu;A. Luszczak;M. Luszczak;J. D. Madrigal;M. Mangano;Z. Marcone;Cyrille Marquet;Alan D. Martin;T. Martin;M. M. Hernández-M.;C. Martins;C. Mayer;R. Nulty;P. Mechelen;R. Macula;E. Costa;T. Mertzimekis;C. Mesropian;M. Mieskolainen;N. Minafra;I. Monzón;L. Mundim;B. Murdaca;M. Murray;H. Niewiadowski;J. Nystrand;E. G. Oliveira;R. Orava;S. Ostapchenko;K. Osterberg;A. Panagiotou;A. Papa;R. Pasechnik;T. Peitzmann;L. Moreno;T. Pierog;J. Pinfold;M. Poghosyan;M. Pol;W. Prado;V. Popov;M. Rangel;A. Reshetin;J. Revol;M. Rijssenbeek;M. Rodriguez;B. Roland;C. Royon;C. Royon;M. Ruspa;M. Ryskin;M. Ryskin;A. Vera;G. Safronov;T. Sako;H. Schindler;D. Šálek;K. Šafařík;M. Saimpert;A. Santoro;R. Schicker;J. Seger;S. Sen;A. Shabanov;W. Schäfer;G. G. Silveira-G.;P. Skands;R. Soluk;A. Spilbeeck;R. Staszewski;S. Stevenson;W. Stirling;M. Strikman;A. Szczurek;L. Szymanowski;J. D. T. Takaki;M. Tasevsky;K. Taesoo;C. Thomas;S. R. Torres;A. Tricomi;M. Trzebiński;D. Tsybychev;N. Turini;R. Ulrich;E. Usenko;J. Varela;M. Vetere;A. V. Tello;A. Pereira;D. Volyanskyy;S. Wallon;G. Wilkinson;H. Wöhrmann;K. Zapp;Y. Zoccarato
通讯作者：
K. Akiba;M. Akbiyik;M. Albrow;M. Arneodo;V. Avati;V. Avati;J. Baechler;O. Baillie;P. Bartalini;J. Bartels;S. Baur;C. Baus;W. Beaumont;U. Behrens;D. Berge;M. Berretti;M. Berretti;E. Bossini;R. Boussarie;S. Brodsky;M. Broz;M. Bruschi;P. Bussey;W. Byczynski;J. Noris;E. C. Villar;A. Campbell;F. Caporale;W. Carvalho;G. Chachamis;E. Chapon;C. Cheshkov;J. Chwastowski;R. Ciesielski;D. Chinellato;A. Cisek;V. Coco;P. Collins;J. G. Contreras;B. Cox;D. Damiao;P. Davis;M. Deile;D. d’Enterria;D. Druzhkin;B. Ducloué;B. Ducloué;R. Dumps;R. Dzhelyadin;P. Dziurdzia;M. Eliachevitch;P. Fassnacht;F. Ferro;S. Fichet;D. Figueiredo;D. Finogeev;R. Fiore;J. Forshaw;A. Medina;M. Gallinaro;A. Granik;G. Gersdorff;S. Giani;K. Golec-Biernat;V. Gonçalves;P. Göttlicher;K. Goulianos;J.-Y. Grosslord;L. Harland–Lang;H. Haevermaet;M. Hentschinski;R. Engel;G. Corral;J. Hollar;L. Huertas;D. Johnson;I. Katkov;O. Kepka;M. Khakzad;L. Kheyn;V. Khachatryan;V. Khoze;S. Klein;M. Klundert;F. Krauss;A. Kurepin;N. Kurepin;K. Kutak;E. Kuznetsova;G. Latino;P. Lebiedowicz;B. Lenzi;E. Lewandowska;S. Liu;A. Luszczak;M. Luszczak;J. D. Madrigal;M. Mangano;Z. Marcone;Cyrille Marquet;Alan D. Martin;T. Martin;M. M. Hernández-M.;C. Martins;C. Mayer;R. Nulty;P. Mechelen;R. Macula;E. Costa;T. Mertzimekis;C. Mesropian;M. Mieskolainen;N. Minafra;I. Monzón;L. Mundim;B. Murdaca;M. Murray;H. Niewiadowski;J. Nystrand;E. G. Oliveira;R. Orava;S. Ostapchenko;K. Osterberg;A. Panagiotou;A. Papa;R. Pasechnik;T. Peitzmann;L. Moreno;T. Pierog;J. Pinfold;M. Poghosyan;M. Pol;W. Prado;V. Popov;M. Rangel;A. Reshetin;J. Revol;M. Rijssenbeek;M. Rodriguez;B. Roland;C. Royon;C. Royon;M. Ruspa;M. Ryskin;M. Ryskin;A. Vera;G. Safronov;T. Sako;H. Schindler;D. Šálek;K. Šafařík;M. Saimpert;A. Santoro;R. Schicker;J. Seger;S. Sen;A. Shabanov;W. Schäfer;G. G. Silveira-G.;P. Skands;R. Soluk;A. Spilbeeck;R. Staszewski;S. Stevenson;W. Stirling;M. Strikman;A. Szczurek;L. Szymanowski;J. D. T. Takaki;M. Tasevsky;K. Taesoo;C. Thomas;S. R. Torres;A. Tricomi;M. Trzebiński;D. Tsybychev;N. Turini;R. Ulrich;E. Usenko;J. Varela;M. Vetere;A. V. Tello;A. Pereira;D. Volyanskyy;S. Wallon;G. Wilkinson;H. Wöhrmann;K. Zapp;Y. Zoccarato