Data-driven precision determination of the material budget in ALICE

被引：0

作者：

Acharya, S. ^{[137
]}

Adamova, D. ^{[96
]}

Adler, A. ^{[79
]}

Rinella, G. Aglieri ^{[42
]}

Agnello, M. ^{[38
]}

Agrawal, N. ^{[60
]}

Ahammed, Z. ^{[144
]}

Ahmad, S. ^{[17
]}

Ahn, S. U. ^{[80
]}

Ahuja, I. ^{[47
]}

Akindinov, A. ^{[152
]}

Al-Turany, M. ^{[108
,109
]}

Aleksandrov, D. ^{[152
]}

Alessandro, B. ^{[65
]}

Alfanda, H. M. ^{[7
]}

Molina, R. Alfaro ^{[76
]}

Ali, B. ^{[17
]}

Alici, A. ^{[30
,31
]}

Alizadehvandchali, N. ^{[126
]}

Alkin, A. ^{[42
]}

Alme, J. ^{[22
]}

Alocco, G. ^{[61
]}

Alt, T. ^{[73
]}

Altsybeev, I. ^{[152
]}

Anaam, M. N. ^{[7
]}

Andrei, C. ^{[55
]}

Andronic, A. ^{[147
]}

Anguelov, V. ^{[105
]}

Antinori, F. ^{[63
]}

Antonioli, P. ^{[60
]}

Apadula, N. ^{[84
]}

Aphecetche, L. ^{[115
]}

Appelshaeuser, H. ^{[73
]}

Arata, C. ^{[83
]}

Arcelli, S. ^{[30
,31
]}

Aresti, M. ^{[61
]}

Arnaldi, R. ^{[65
]}

Arneiro, J. G. M. C. A. ^{[122
]}

Arsene, I. C. ^{[21
]}

Arslandok, M. ^{[149
]}

Augustinus, A. ^{[42
]}

Averbeck, R. ^{[108
,109
]}

Azmi, M. D. ^{[17
]}

Badala, A. ^{[62
]}

Bae, J. ^{[116
]}

Baek, Y. W. ^{[50
]}

Bai, X. ^{[130
]}

Bailhache, R. ^{[73
]}

Bailung, Y. ^{[57
]}

Balbino, A. ^{[38
]}

机构：

[1] Yerevan Phys Inst Fdn, AI Alikhanyan Natl Sci Lab, Yerevan, Armenia

[2] AGH Univ Sci & Technol, Krakow, Poland

[3] Natl Acad Sci Ukraine, Bogolyubov Inst Theoret Phys, Kiev, Ukraine

[4] Bose Inst, Dept Phys, Kolkata, India

[5] Bose Inst, Ctr Astroparticle Phys & Space Sci CAPSS, Kolkata, India

[6] Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA USA

[7] Cent China Normal Univ, Wuhan, Peoples R China

[8] Ctr Aplicac Tecnol & Desarrollo Nucl CEADEN, Havana, Cuba

[9] Ctr Invest & Estudios Avanzados CINVESTAV, Mexico City, DF, Mexico

[10] Ctr Invest & Estudios Avanzados CINVESTAV, Merida, Mexico

[11] Chicago State Univ, Chicago, IL USA

[12] China Inst Atom Energy, Beijing, Peoples R China

[13] Chungbuk Natl Univ, Cheongju, South Korea

[14] Comenius Univ, Fac Math Phys & Informat, Bratislava, Slovakia

[15] COMSATS Univ Islamabad, Islamabad, Pakistan

[16] Creighton Univ, Omaha, NE USA

[17] Aligarh Muslim Univ, Dept Phys, Aligarh, Uttar Pradesh, India

[18] Pusan Natl Univ, Dept Phys, Pusan, South Korea

[19] Sejong Univ, Dept Phys, Seoul, South Korea

[20] Univ Calif Berkeley, Dept Phys, Berkeley, CA USA

[21] Univ Oslo, Dept Phys, Oslo, Norway

[22] Univ Bergen, Dept Phys & Technol, Bergen, Norway

[23] Univ Pavia, Dipartimento Fis, Pavia, Italy

[24] Univ Cagliari, Dipartimento Fis, Cagliari, Italy

[25] Sezione Ist Nazl Fis Nucl, Cagliari, Italy

[26] Univ Trieste, Dipartimento Fis, Trieste, Italy

[27] Sezione Ist Nazl Fis Nucl, Trieste, Italy

[28] Univ Turin, Dipartimento Fis, Turin, Italy

[29] Sezione Ist Nazl Fis Nucl, Turin, Italy

[30] Univ Bologna, Dipartimento Fis & Astron, Bologna, Italy

[31] Sezione Ist Nazl Fis Nucl, Bologna, Italy

[32] Univ Catania, Dipartimento Fis & Astron, Catania, Italy

[33] Sezione Ist Nazl Fis Nucl, Catania, Italy

[34] Univ Padua, Dipartimento Fis & Astron, Padua, Italy

[35] Sezione Ist Nazl Fis Nucl, Padua, Italy

[36] Univ Salerno, Dipartimento Fis ER Caianiello, Salerno, Italy

[37] Grp Collegato INFN, Salerno, Italy

[38] Politecn & Sez INFN, Dipartimento DISAT, Turin, Italy

[39] Univ Messina, Dipartimento Sci MIFT, Messina, Italy

[40] Dipartimento Interateneo Fis M Merlin, Bari, Italy

[41] Sezione Ist Nazl Fis Nucl, Bari, Italy

[42] European Org Nucl Res CERN, Geneva, Switzerland

[43] Univ Split, Fac Elect Engn Mech Engn & Naval Architecture, Split, Croatia

[44] Western Norway Univ Appl Sci, Fac Engn & Sci, Bergen, Norway

[45] Czech Tech Univ, Fac Nucl Sci & Phys Engn, Prague, Czech Republic

[46] Sofia Univ, Fac Phys, Sofia, Bulgaria

[47] Safarik Univ, Fac Sci, Kosice, Slovakia

[48] Goethe Univ Frankfurt, Frankfurt Inst Adv Studies FIAS, Frankfurt, Germany

[49] Fudan Univ, Shanghai, Peoples R China

[50] Gangneung Wonju Natl Univ, Kangnung, South Korea

来源：

JOURNAL OF INSTRUMENTATION | 2023年 / 18卷 / 11期

关键词：

Analysis and statistical methods; Detector modelling and simulations I (interaction of radiation with matter; interaction of photons with matter; interaction of hadrons with matter; etc); Large detector systems for particle and astroparticle physics; Particle tracking detectors;

D O I：

10.1088/1748-0221/18/11/P11032

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The knowledge of the material budget with a high precision is fundamental for mea-surements of direct photon production using the photon conversion method due to its direct impact on the total systematic uncertainty. Moreover, it influences many aspects of the charged-particle reconstruction performance. In this article, two procedures to determine data-driven corrections to the material-budget description in ALICE simulation software are developed. One is based on the precise knowledge of the gas composition in the Time Projection Chamber. The other is based on the robustness of the ratio between the produced number of photons and charged particles, to a large extent due to the approximate isospin symmetry in the number of produced neutral and charged pions. Both methods are applied to ALICE data allowing for a reduction of the overall material budget systematic uncertainty from 4.5% down to 2.5%. Using these methods, a locally correct material budget is also achieved. The two proposed methods are generic and can be applied to any experiment in a similar fashion.

引用

页数：27

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