Measurement of Bose-Einstein correlations in pp collisions at $ \sqrt {s} = 0.9 $ and 7 TeV

• Published in: The journal of high energy physics 2011-05, Vol.2011 (5), Article 29
• Main Authors: Khachatryan, V., Sirunyan, A. M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., Erö, J., Fabjan, C., Friedl, M., Frühwirth, R., Ghete, V. M., Hammer, J., Hänsel, S., Hartl, C., Hoch, M., Hörmann, N., Hrubec, J., Jeitler, M., Kasieczka, G., Kiesenhofer, W., Krammer, M., Liko, D., Mikulec, I., Pernicka, M., Rohringer, H., Schöfbeck, R., Strauss, J., Taurok, A., Teischinger, F., Wagner, P., Waltenberger, W., Walzel, G., Widl, E., Wulz, C.-E., Mossolov, V., Shumeiko, N., Suarez Gonzalez, J., Benucci, L., Cerny, K., De Wolf, E. A., Janssen, X., Maes, T., Mucibello, L., Ochesanu, S., Roland, B., Rougny, R., Selvaggi, M., Van Haevermaet, H., Van Mechelen, P., Van Remortel, N., Adler, V., Beauceron, S., Blekman, F., Blyweert, S., D’Hondt, J., Devroede, O., Gonzalez Suarez, R., Kalogeropoulos, A., Maes, J., Maes, M., Tavernier, S., Van Doninck, W., Van Mulders, P., Van Onsem, G. P., Villella, I., Charaf, O., Clerbaux, B., De Lentdecker, G., Dero, V., Gay, A. P. R., Hammad, G. H., Hreus, T., Marage, P. E., Thomas, L., Vander Velde, C., Vanlaer, P., Wickens, J., Costantini, S., Grunewald, M., Klein, B., Marinov, A., Mccartin, J., Ryckbosch, D., Thyssen, F., Tytgat, M., Vanelderen, L., Verwilligen, P., Walsh, S., Zaganidis, N., Basegmez, S., Bruno, G., Caudron, J., Ceard, L., De Favereau De Jeneret, J., Delaere, C., Demin, P., Favart, D., Giammanco, A., Grégoire, G., Hollar, J.
• Format: Article
• Language: English
• Subjects: High Energy Physics - Experiment; Physics
• ISSN: 1029-8479; 1126-6708; 1029-8479
• DOI: 10.1007/JHEP05(2011)029

Bose-Einstein correlations between identical particles are measured in samples of proton-proton collisions at 0.9 and 7 TeV centre-of-mass energies, recorded by the CMS experiment at the LHC. The signal is observed in the form of an enhancement of number of pairs of same-sign charged particles with small relative momentum. The dependence of this enhancement on kinematic and topological features of the event is studied.