Dall'Osso, M. (2014) Measurement of the X(3872) production cross section via decays to J/psi pi(+)pi(-). Il nuovo cimento C, 37 (1). pp. 283-284. ISSN 1826-9885
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Abstract
The production of the X(3872) is studied in pp collisions at root s = 7 TeV with the CMS detector at LHC, using decays to J / psi pi(+)pi(-) where the J / psi decays to two IM1011.S. For the first time, the prompt X(3872) cross section times branching fraction is extracted differentially in pT. The available NRQCD predictions significantly exceed the measured value, while the pT dependence is reasonably well described. The dipion invariant-mass spectrum of the J / psi pi(+)pi(-) system in the X(3872) decay is measured and favours the presence of an intermediate p0 state.
| Item Type: | Article |
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| Uncontrolled Keywords: | Heavy quarkonia |
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 12 May 2020 15:43 |
| Last Modified: | 12 May 2020 15:43 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/18522 |
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