Naslov
Search for pentaquarks

Autori
Šuša, Tatjana

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, neobjavljeni rad, znanstveni

Skup
2004 LHC Days in Split

Mjesto i datum
Split, Hrvatska, 05.10.2004. - 09.10.2004

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Nije recenziran

Ključne riječi
pentaquark; exotic; baryons; observation; NA49

Sažetak
A narrow resonance in Xi-pi- invariant mass spectrum is observed in p+p collisions at sqrt(s) = 17.2 GeV in NA49 experiment. The resonance has a mass of 1.862 +/- 0.002 GeV/c2 and width below the detector resolution of 0.018 GeV/c2. This state is identified as a candidate for the exotic Xi-- baryon, with I= 3/2, S=-2 and a quark content of (dsdsubar). At the same mass an indication of the enhancement is observed in the Xi-pi+ spectrum and corresponding antiparticle spectra (Xibar+pi-, Xibar+pi+). Results of pentaquark search in other experiments will be presented and discussed.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA