Journal Article

Search for Higgs-like bosons decaying into long-lived exotic particles

Fohl, K., Jurik, N., Wicht, J., Vorobyev, V., Benito, C. Marin, Volkov, V., Gorelov, I. V., Chefdeville, M., Di Canto, A., Hicheur, A., Popov, D., De Paula, B. Souza, Stahl, M., Alexander, M., De Cian, M., Deschamps, O., Wang, J., Jones, C. R., Durante, P., Gao, Y., Dreimanis, K., Maurin, B., Yang, Z., Cardinale, R., Gianì, S., Lees, J.-P., Kirn, T., Barlow, R. J., Martinez, M. Lucio, Nikodem, T., Ilten, P., Schmelling, M., Lanfranchi, G., Battista, V., Matev, R., Jans, E., Bedeschi, F., Gavardi, L., Kucewicz, W., Swientek, K., Haines, S. C., Henrard, P., Stefko, P., Pugatch, V., Bonivento, W., Ketel, T., Sierra, C. Vázquez, Ekelhof, R., Ferro-Luzzi, M., Oldeman, R., Hussain, N., Lefèvre, R., Golubkov, D., Shevchenko, V., Valls, P. Ruiz, Morello, M. J., Cheung, S.-F., Dalseno, J., Jawahery, A., Lai, A., Schneider, O., Cardoso, L. A. Granado, Krzemien, W., Rama, M., Soler, F. J. P., Bozzi, C., Carniti, P., Joram, C., Tran, M. T., Sciubba, A., Fontana, M., Borisyak, M., Straticiuc, M., Diaz, M. Vieites, Cenci, R., Francisco, O. De Aguiar, Smith, E., Egorychev, V., Marchand, J. F., Santimaria, M., Gibson, V., Mulder, M., Tisserand, V., Storaci, B., Bill

2016

Overview

A search is presented for massive long-lived particles, in the 20–60  Ge V / c 2 mass range with lifetimes between 5 and 100  ps . The dataset used corresponds to 0.62 fb - 1 of proton-proton collision data collected by the LHCb detector at s = 7 Te V . The particles are assumed to be pair-produced by the decay of a Higgs-like boson with mass between 80 and 140  Ge V / c 2 . No excess above the background expectation is observed and limits are set on the production cross-section as a function of the long-lived particle mass and lifetime and of the Higgs-like boson mass.

• Publisher: Springer Berlin Heidelberg,Springer,Springer Nature B.V,Springer Verlag (Germany)
• Subject: Astronomy / Astrophysics and Cosmology / Bosons / Detection equipment / Elementary Particles / Hadrons / Heavy Ions / High Energy Physics - Experiment / Measurement Science and Instrumentation / Nuclear Energy / Nuclear Physics / Particle collisions / Particle decay / Particle mass / Physics / Physics and Astronomy / Quantum Field Theories / Quantum Field Theory / Regular - Experimental Physics / Regular Article - Experimental Physics / String Theory