Title |
Search for doubly charmed baryon テ篠枩cc^(++) |
Authors |
LHCb collaboration (R. Aaij, et al.) |
Publication date |
2019/11/19 |
Journal |
Science China - Physics, Mechanics & Astronomy |
Volume |
63 |
Issue |
2 |
Pages |
221062 |
Publisher |
Science China Press |
Abstract |
A search for the doubly charmed baryon テδεつεδづつεδεつづδづつ偲δεつεδづつづδεつづδづつ+cc is performed through its decay to the テδεつεδづつεδεつづδづつ偲δεつεδづつづδεつづδづつ+cKテδεつεδづつεδεつづδづつ「テδεつεδづつづδεつづδづつ暗δεつεδづつづδεつづδづつ津δεつεδづつεδεつづδづつ湘δεつεδづつづδεつづδづつ+ final state, using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13 TeV. The data correspond to a total integrated luminosity of 9 fbテδεつεδづつεδεつづδづつ「テδεつεδづつづδεつづδづつ暗δεつεδづつづδεつづδづつ1. No significant signal is observed in the mass range from 3.4 to 3.8 GeV/c2. Upper limits are set at 95% credibility level on the ratio of the テδεつεδづつεδεつづδづつ偲δεつεδづつづδεつづδづつ+cc production cross-section times the branching fraction to that of テδεつεδづつεδεつづδづつ偲δεつεδづつづδεつづδづつ+c and テδεつεδづつεδεつづδづつ偲δεつεδづつづδεつづδづつ++cc baryons. The limits are determined as functions of the テδεつεδづつεδεつづδづつ偲δεつεδづつづδεつづδづつ+cc mass for different lifetime hypotheses, in the rapidity range from 2.0 to 4.5 and the transverse momentum range from 4 to 15 GeV/c. |
Index terms / Keywords |
charmed baryons, limits on production of particles, charmed quarks, experimental tests |
DOI |
|
URL |
|