The results of a search for the bottomonium counterpart, denoted as X-b, of the exotic charmonium state X(3872) is presented. The analysis is based on a sample of pp collisions at,root s = 8 TeV collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 20.7 fb(-1). The search looks for the exclusive decay channel X-b -> Upsilon(1S)pi(+)pi(-) followed by Upsilon(1S) -> mu(+)mu(-). No evidence for an X-b signal is observed. Upper limits are set at the 95% confidence level on the ratio of the inclusive production cross sections times the branching fractions to Upsilon(1S)pi(+)pi(-) of the X-b and the Upsilon(2S). The upper limits on the ratio are in the range 0.9-5.4% for X-b masses between 10 and 11 GeV. These are the first upper limits on the production of a possible X-b at a hadron collider. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.

Search for a new bottomonium state decaying to Upsilon(1S)pi(+)pi(-) in pp collisions at root s=8 TeV / S., C., V., K., A. M., S., A., T., W., A., T., B., M., D., J., E., C., F., M., F., R., F., V. M., G., N., H., J., H., M., J., W., K., V., K., M., K., I., K., D., L., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 727:(2013), pp. 57-76. [10.1016/j.physletb.2013.10.016]

Search for a new bottomonium state decaying to Upsilon(1S)pi(+)pi(-) in pp collisions at root s=8 TeV

BARONE, Luciano Maria;DEL RE, Daniele;LONGO, Egidio;MARGAROLI, Fabrizio;MICHELI, FRANCESCO;ORGANTINI, Giovanni;PARAMATTI, Riccardo;RAHATLOU, SHAHRAM;SOFFI, LIVIA;SANTANASTASIO, FRANCESCO;TRACZYK, PIOTR WOJCIECH;
2013

Abstract

The results of a search for the bottomonium counterpart, denoted as X-b, of the exotic charmonium state X(3872) is presented. The analysis is based on a sample of pp collisions at,root s = 8 TeV collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 20.7 fb(-1). The search looks for the exclusive decay channel X-b -> Upsilon(1S)pi(+)pi(-) followed by Upsilon(1S) -> mu(+)mu(-). No evidence for an X-b signal is observed. Upper limits are set at the 95% confidence level on the ratio of the inclusive production cross sections times the branching fractions to Upsilon(1S)pi(+)pi(-) of the X-b and the Upsilon(2S). The upper limits on the ratio are in the range 0.9-5.4% for X-b masses between 10 and 11 GeV. These are the first upper limits on the production of a possible X-b at a hadron collider. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
2013
cms; exotic quarkonia; physics
01 Pubblicazione su rivista::01a Articolo in rivista
Search for a new bottomonium state decaying to Upsilon(1S)pi(+)pi(-) in pp collisions at root s=8 TeV / S., C., V., K., A. M., S., A., T., W., A., T., B., M., D., J., E., C., F., M., F., R., F., V. M., G., N., H., J., H., M., J., W., K., V., K., M., K., I., K., D., L., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 727:(2013), pp. 57-76. [10.1016/j.physletb.2013.10.016]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/637208
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