Περίληψη:
A search has been made in 300 GeV/c pi+/– and proton-Li interactions
for production of states that decay into J/psi or psi’ plus one or two
pions. A 2.5sigma enhancement in the J/psi pi0 spectrum, possibly the
recently reported 1P1 state of charmonium, is observed at a mass of
3.527 GeV/c2. In the J/psi plus two pion mass spectrum, we report,
together with the expected psi’ –> J/psi pi+pi-, the tentative
observation of a structure at a mass of 3.836 GeV/c2. No enhancements
are seen in the J/psi pi+/-pi+/-, J/psi pi+/-pi0, J/psi pi+/-, or psi’
pi+/- mass spectra.
Συγγραφείς:
ANTONIAZZI, L
ARENTON, M
CAO, Z
CHEN, T
CONETTI, S and
CORTI, G
COX, B
DELCHAMPS, S
FORTNEY, L
GUFFEY, K and
HAIRE, M
IOANNOU, P
JENKINS, CM
JUDD, DJ
KOURKOUMELIS, C
and MANOUSAKISKATSIKAKIS, A
KUZMINSKI, J
LECOMPTE, T and
MARCHIONNI, A
HE, M
MAZUR, PO
MURPHY, CT
PRAMANTIOTIS, P
and RAMEIKA, R
RESVANIS, LK
ROSATI, M
ROSEN, J
SHEN, C
and SHEN, Q
SIMARD, A
SMITH, RP
SPIEGEL, L
STAIRS, DG
and TAN, Y
TESAREK, RJ
TURKINGTON, T
TURNBULL, L
TURKOT,
F
TZAMARIAS, S
VOULGARIS, G
WAGONER, DE
WANG, C and
YANG, W
YAO, N
ZHANG, N
ZHANG, X
ZIOULAS, G
ZOU, B
