Measurement of pion, kaon and proton production in proton–proton collisions at s=7 TeV

• Published in: The European physical journal. C, Particles and fields Vol. 75; no. 5
• Main Authors: Ahmed, I., Prado, C. Alves Garcia, Aphecetche, L., Bailhache, R., Behera, N. K., Belyaev, V., Bencedi, G., Berzano, D., Bhasin, A., Bhom, J., Blau, D., Bock, F., Böttger, S., Casula, E. A. R., Cherney, M., Chochula, P., Cifarelli, L., Cleymans, J., Cormier, T. M., Maldonado, I. Cortés, Cosentino, M. R., Crochet, P., Dainese, A., Das, D., Das, I., Cataldo, G. de, Nezza, P. Di, Dobrowolski, T., Gimenez, D. Domenicis, Girard, M. Fusco, Gheata, M., Giubilato, P., Gupta, A., Heide, M., Hess, B. A., Hussain, T., Irfan, M., Karavicheva, T., Kim, B., Klein-Bösing, C., Kravčáková, A., Kučera, V., Kurashvili, P., Kuryakin, A., Kushpil, S., Lemmon, R. C., Li, S., Li, X., Lindal, S., Mahajan, S., Majka, R. D., Manko, V., Masui, H., Muccifora, V., Nikolaev, S., Pandey, A. K., Pawlak, T., Poljak, N., Pospisil, J., Punin, V., Reed, R. J., Ricci, R. A., Riedler, P., Riegler, W., Sahoo, S., Saleh, M. A., Šándor, L., Sano, M., Scarlassara, F., Scioli, G., Sekiguchi, Y., Shabetai, A., Shangaraev, A., Silvestre, C., Sinha, B. C., Slupecki, M., Snellman, T. W., Song, J., Stocco, D., Strmen, P., Szczepankiewicz, A., Takaki, J. D. Tapia, Tauro, A., Muñoz, G. Tejeda, Trzaska, W. H., Vala, M., Palomo, L. Valencia, Hoorne, J. W. Van, Leeuwen, M. van, Vasiliev, A., Veldhoen, M., Vercellin, E., Verweij, M., Vrláková, J., Weber, S. G., Yamaguchi, Y., Yurchenko, V., Zaviyalov, N., Zhigareva, N., Zichichi, A.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 2015; Springer Berlin/Heidelberg
• Subjects: Astronomy; Astrophysics and Cosmology; Elementary Particles; Hadrons; Heavy Ions; Measurement Science and Instrumentation; Nuclear Energy; Nuclear Physics; Physics; Physics and Astronomy; Quantum Field Theories; Quantum Field Theory; Regular Article - Experimental Physics; String Theory
• ISSN: 1434-6044; 1434-6052
• DOI: 10.1140/epjc/s10052-015-3422-9

The measurement of primary π ± , K ± , p and p ¯ production at mid-rapidity ( | y | < 0.5) in proton–proton collisions at s = 7 TeV performed with a large ion collider experiment at the large hadron collider (LHC) is reported. Particle identification is performed using the specific ionisation energy-loss and time-of-flight information, the ring-imaging Cherenkov technique and the kink-topology identification of weak decays of charged kaons. Transverse momentum spectra are measured from 0.1 up to 3 GeV/ c for pions, from 0.2 up to 6 GeV/ c for kaons and from 0.3 up to 6 GeV/ c for protons. The measured spectra and particle ratios are compared with quantum chromodynamics-inspired models, tuned to reproduce also the earlier measurements performed at the LHC. Furthermore, the integrated particle yields and ratios as well as the average transverse momenta are compared with results at lower collision energies.