Measurements of longitudinal and transverse momentum distributions for neutral pions in the forward-rapidity region with the LHCf detector

被引：67

作者：

Adriani, O. ^{[1
,2
]}

Berti, E. ^{[1
,2
]}

Bonechi, L. ^{[1
]}

Bongi, M. ^{[1
,2
]}

D'Alessandro, R. ^{[1
,2
]}

Del Prete, M. ^{[1
,2
]}

Haguenauer, M. ^{[3
]}

Itow, Y. ^{[4
,5
]}

Iwata, T. ^{[6
]}

Kasahara, K. ^{[6
]}

Kawade, K. ^{[7
]}

Makino, Y. ^{[7
]}

Masuda, K. ^{[7
]}

Matsubayashi, E. ^{[7
]}

Menjo, H. ^{[8
]}

Mitsuka, G. ^{[2
,15
]}

Muraki, Y. ^{[7
]}

Papini, P. ^{[1
]}

Perrot, A. -L. ^{[9
]}

Ricciarini, S. ^{[1
,10
]}

Sako, T. ^{[4
,5
]}

Sakurai, N. ^{[5
,16
]}

Suzuki, T. ^{[6
]}

Tamura, T. ^{[11
]}

Tiberio, A. ^{[1
,2
]}

Torii, S. ^{[6
]}

Tricomi, A. ^{[12
,13
]}

Turner, W. C. ^{[14
]}

Ueno, M. ^{[7
]}

Zhou, Q. D. ^{[7
]}

机构：

[1] Ist Nazl Fis Nucl, Sect Florence, Florence, Italy

[2] Univ Florence, I-50121 Florence, Italy

[3] Ecole Polytech, Palaiseau, France

[4] Nagoya Univ, Inst Space Earth Environm Res, Nagoya, Aichi, Japan

[5] Nagoya Univ, Kobayashi Maskawa Inst Origin Particles & Univers, Nagoya, Aichi, Japan

[6] Waseda Univ, RISE, Tokyo, Japan

[7] Nagoya Univ, Inst Space Earth Environm Res, Nagoya, Aichi, Japan

[8] Nagoya Univ, Grad Sch Sci, Nagoya, Aichi, Japan

[9] CERN, CH-1211 Geneva 23, Switzerland

[10] CNR, IFAC, I-00185 Rome, Italy

[11] Kanagawa Univ, Yokohama, Kanagawa, Japan

[12] Ist Nazl Fis Nucl, Sect Catania, Catania, Italy

[13] Univ Catania, I-95124 Catania, Italy

[14] LBNL, Berkeley, CA USA

[15] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA

[16] Univ Tokushima, Inst Socioarts & Sci, Tokushima, Japan

来源：

PHYSICAL REVIEW D | 2016年 / 94卷 / 03期

关键词：

PROTON-PROTON COLLISIONS; HIGH-ENERGY SCATTERING; BARYON PRODUCTION; WORKING GROUP; FRAGMENTATION; PERFORMANCE; ARRAY; TEV;

D O I：

10.1103/PhysRevD.94.032007

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The differential cross sections for inclusive neutral pions as a function of transverse and longitudinal momentum in the very forward-rapidity region have been measured at the LHC with the LHC forward detector in proton-proton collisions at root s = 2.76 and 7 TeV and in proton-lead collisions at nucleon nucleon center-of-mass energies of root sNN = 5.02 TeV. Such differential cross sections in proton-proton collisions are compatible with the hypotheses of limiting fragmentation and Feynman scaling. Comparing proton-proton with proton-lead collisions, we find a sizable suppression of the production of neutral pions in the differential cross sections after subtraction of ultraperipheral proton-lead collisions. This suppression corresponds to the nuclear modification factor value of about 0.1-0.3. The experimental measurements presented in this paper provide a benchmark for the hadronic interaction Monte Carlo simulation codes that are used for the simulation of cosmic ray air showers.

引用

页数：38

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