Study of intermediate two-body decays in (B)over-bar(0) -> Sigma(c)(2455)(0)(p)over-bar pi( )
HO Kim, H Kichimi, I Adachi, H Aihara, K Arinstein, V Aulchenko, T Aushev, AM Bakich, V Balagura, I Bedny, U Bitenc, A Bondar, A Bozek, M Bracko, TE Browder, P Chang, Y Chao, BG Cheon, R Chistov, I-S Cho Show all
PHYSICS LETTERS B | ELSEVIER SCIENCE BV | Published : 2008
We present results of a detailed study of the three-body over(B, ̄)0 → Σc (2455)0 over(p, ̄) π+ decay. A significant enhancement of signal events is observed in the over(p, ̄) π+ invariant mass distribution near 1.5 GeV / c2 that is consistent with the presence of an intermediate baryonic resonance over(N, ̄)0, where over(N, ̄)0 is the over(N, ̄) (1440)0 P11 or over(N, ̄) (1535)0 S11 state, or an admixture of the two states. We measure the product B (over(B, ̄)0 → Σc (2455)0 over(N, ̄)0) × B (over(N, ̄)0 → over(p, ̄) π+) = (0.80 ± 0.15 (stat .) ± 0.14 (syst .) ± 0.21) × 10-4, where the last error is due to the uncertainty in B (Λc+ → p K- π+). The significance of the signal is 6.1 standard d..View full abstract
We thank the KEKB group for excellent operation of the accelerator, the KEK cryogenics group for efficient solenoid operations, and the KEK computer group and the NII for valuable computing and Super-SINET network support. We acknowledge support from MEXT and JSPS (Japan); ARC and DEST (Australia): NSFC (China); DST (India): MOEHRD, KOSEF and KRF (Korea); KBN (Poland); MES and RFAAE (Russia); ARRS (Slovenia); SNSF (Switzerland): NSC and MOE (Taiwan); and DOE (USA).