A search is presented for long-lived particles with a mass between 25 and 50 GeV/c2 and a lifetime between 1 and 200 ps in a sample of proton–proton collisions at a centre-of-mass energy of √=7 TeV, corresponding to an integrated luminosity of 0.62 fb −1 , collected by the LHCb detector. The particles are assumed to be pair-produced by the decay of a standard model-like Higgs boson. The experimental signature of the long-lived particle is a displaced vertex with two associated jets. No excess above the background is observed and limits are set on the production cross-section as a function of the long-lived particle mass and lifetime.

Search for long-lived particles decaying to jet pairs / Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreassen, R., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 75:4(2015), pp. 1-12. [10.1140/epjc/s10052-015-3344-6]

Search for long-lived particles decaying to jet pairs

Capriotti, L.;Casse, G.;Di Domenico, A.;SARTI, ALESSIO;SCIUBBA, Adalberto;
2015

Abstract

A search is presented for long-lived particles with a mass between 25 and 50 GeV/c2 and a lifetime between 1 and 200 ps in a sample of proton–proton collisions at a centre-of-mass energy of √=7 TeV, corresponding to an integrated luminosity of 0.62 fb −1 , collected by the LHCb detector. The particles are assumed to be pair-produced by the decay of a standard model-like Higgs boson. The experimental signature of the long-lived particle is a displaced vertex with two associated jets. No excess above the background is observed and limits are set on the production cross-section as a function of the long-lived particle mass and lifetime.
2015
Higgs Boson, Invariant Mass, Systematic Uncertainty, Primary Vertex, Secondary Vertex
01 Pubblicazione su rivista::01a Articolo in rivista
Search for long-lived particles decaying to jet pairs / Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreassen, R., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 75:4(2015), pp. 1-12. [10.1140/epjc/s10052-015-3344-6]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/836115
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