Ks0 and Λ production in pp interactions at √s=0.9 and 7 TeV measured with the ATLAS detector at the LHC

• Published in: Physical review. D, Particles, fields, gravitation, and cosmology Particles, fields, gravitation, and cosmology, 2012-01, Vol.85 (1)
• Main Authors: Alessandria, F., Assamagan, K., Behar Harpaz, S., Bocci, A., Boddy, C. R., Bromberg, C., Bruschi, M., Bucci, F., Buira-Clark, D., Campana, S., Caso, C., Cetin, S. A., Chen, C., Chen, S., Chevalier, L., Childers, J. T., Colas, J., Conde Muiño, P., D’Orazio, A., Darlea, G. L., De Nooij, L., Duerdoth, I. P., Ferretti, C., Fox, H., Gaponenko, A., Gaur, B., Glitza, K. W., Grinstein, S., Harrington, R. D., Hassani, S., Hauschild, M., Helary, L., Henrot-Versille, S., Horazdovsky, T., Iwasaki, H., Izzo, V., Kekelidze, G. D., Kim, P. C., Kirsch, L. E., Koffas, T., Kolachev, G. M., Koreshev, V., Kroseberg, J., Kugel, A., La Rosa, A., Landon, M. P. J., Landsman, H., Lari, T., Leyton, M., Lichard, P., Liu, D., Mader, W. F., Mamuzic, J., Meoni, E., Mercurio, K. M., Moisseev, A. M., Murray, W. J., Nakamura, T., Negri, G., Nemethy, P., Nguyen Thi Hong, V., Okada, S., Paolone, V., Petteni, M., Poblaguev, A., Pontecorvo, L., Popeneciu, G. A., Poveda, J., Pueschel, E., Robinson, J. E. M., Rosati, S., Sarkisyan-Grinbaum, E., Says, L. P., Shibata, A., Sivoklokov, S. Yu, Smith, B. C., Sobie, R., Sosebee, M., Spreitzer, T., Staude, A., Stonjek, S., Suhr, C., Suruliz, K., Sutton, M. R., Takai, H., Teixeira Dias Castanheira, M., Topfel, C., Torres, H., Tovey, D. R., Trigger, I. M., Trzupek, A., Tsipolitis, G., Tzanakos, G., Valladolid Gallego, E., Walbersloh, J., Warburton, A., Weber, J., Wingerter-Seez, I., Wu, X., Yamazaki, T.
• Format: Article
• Language: English
• Subjects: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
• ISSN: 1550-7998; 1550-2368
• DOI: 10.1103/PhysRevD.85.012001

The production of Ks0 and Λ hadrons is studied in pp collision data at √ s = 0.9 and 7 TeV collected with the ATLAS detector at the LHC using a minimum-bias trigger. The observed distributions of transverse momentum, rapidity, and multiplicity are corrected to hadron level in a model-independent way within well-defined phase-space regions. The distribution of the production ratio of ¯¯¯ Λ to Λ baryons is also measured. The results are compared with various Monte Carlo simulation models. Although most of these models agree with data to within 15% in the Ks0 distributions, substantial disagreements are found in the Λ distributions of transverse momentum.