Measurement of the inelastic pp cross-section at a centre-of-mass energy of 13 TeV

• Published in: The journal of high energy physics 2018-06, Vol.2018 (6), p.1-18, Article 100
• Main Authors: Alfonso Albero, A., Alkhazov, G., Alves, A. A., Appleby, R. B., Aslanides, E., Baesso, C., Baryshnikov, F., Batozskaya, V., Bel, L. J., Belloli, N., Betti, F., Billoir, P., Bossu, F., Cadeddu, S., Carvalho Akiba, K., Casse, G., Cenci, R., Coco, V., Cogoni, V., Cojocariu, L., Collins, P., Coombs, G., Crocombe, A., De Paula, L., De Simone, P., Delaney, B., Derkach, D., Dey, B., Dufour, L., Dutta, D., Dzyuba, A., Eklund, L., Fernandez, G., Ferrari, F., Ferreira Lopes, L., Frank, M., Färber, C., Gaspar, C., Gerick, D., Gianì, S., Golutvin, A., Graugés, E., Gruber, L., Gushchin, E., Hadavizadeh, T., Hamilton, B., Hancock, T. H., Hansmann-Menzemer, S., Hecker, M., Huard, Z. C., Kim, K. E., Koliiev, S., Kopecna, R., Kreps, M., Lafferty, G., Latham, T., Lefrançois, J., Lemaitre, F., Likhomanenko, T., Lisovskyi, V., Lopes, J. H., Lyu, X., Maciuc, F., Macko, V., Manca, G., Massafferri, A., Mathe, Z., Meaux, C., Milanes, D. A., Morgunova, O., Müller, D., Müller, J., Müller, K., Müller, V., Oblakowska-Mucha, A., Oyanguren, A., Pappagallo, M., Parkes, C., Prouve, C., Quagliani, R., Ramos Pernas, M., Rodrigues, E., Rogozhnikov, A., Roiser, S., Santacesaria, R., Schindler, H., Simi, G., Stepanova, M., Szymanski, M., Tsaregorodtsev, A., Valat, S., Valenti, G., Velthuis, J. J., Verlage, T. A., de Vries, J. A., Vázquez Sierra, C., Weisser, C., Yushchenko, O., Zhang, L., Zhukov, V.
• Format: Article
• Language: English
• Subjects: Charged particles; Classical and Quantum Gravitation; Cross-sections; Elementary Particles; Extrapolation; Global features; Hadron-Hadron scattering (experiments); High energy physics; High Energy Physics - Experiment; Luminosity; Minimum bias; Particle collisions; Physics; Physics and Astronomy; Protons; Quantum Field Theories; Quantum Field Theory; Quantum Physics; Regular Article - Experimental Physics; Relativity Theory; String Theory; Uncertainty
• ISSN: 1029-8479; 1126-6708; 1029-8479
• DOI: 10.1007/JHEP06(2018)100

A bstract The cross-section for inelastic proton-proton collisions at a centre-of-mass energy of 13 TeV is measured with the LHCb detector. The fiducial cross-section for inelastic interactions producing at least one prompt long-lived charged particle with momentum p > 2 GeV/ c in the pseudorapidity range 2 < η < 5 is determined to be σ acc = 62.2 ± 0.2 ± 2.5 mb. The first uncertainty is the intrinsic systematic uncertainty of the measurement, the second is due to the uncertainty on the integrated luminosity. The statistical uncertainty is negligible. Extrapolation to full phase space yields the total inelastic proton-proton cross-section σ inel = 75.4 ± 3.0 ± 4.5 mb, where the first uncertainty is experimental and the second due to the extrapolation. An updated value of the inelastic cross-section at a centre-of-mass energy of 7 TeV is also reported.