The B_s^0π^± invariant mass distribution is investigated in order to search for possible exotic meson states. The analysis is based on a data sample recorded with the LHCb detector corresponding to 3 fb^-1 of pp collision data at sqrt[s]=7 and 8 TeV. No significant excess is found, and upper limits are set on the production rate of the claimed X(5568) state within the LHCb acceptance. Upper limits are also set as a function of the mass and width of a possible exotic meson decaying to the B_s^0π^± final state. The same limits also apply to a possible exotic meson decaying through the chain B_s^*0π^±, B_s^*0→B_s^0γ where the photon is excluded from the reconstructed decays.
Search for Structure in the B_s^0π^± Invariant Mass Spectrum
VELTRI, MICHELE;
2016
Abstract
The B_s^0π^± invariant mass distribution is investigated in order to search for possible exotic meson states. The analysis is based on a data sample recorded with the LHCb detector corresponding to 3 fb^-1 of pp collision data at sqrt[s]=7 and 8 TeV. No significant excess is found, and upper limits are set on the production rate of the claimed X(5568) state within the LHCb acceptance. Upper limits are also set as a function of the mass and width of a possible exotic meson decaying to the B_s^0π^± final state. The same limits also apply to a possible exotic meson decaying through the chain B_s^*0π^±, B_s^*0→B_s^0γ where the photon is excluded from the reconstructed decays.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
