Pion correlations and resonance effects in (p)over-bar-p annihilation at
rest to 2 pi(+)2 pi(-)pi(0)

Apostolakis, A; Aslanides, E; Backenstoss, G; Bargassa, P and; Behnke, O; Benelli, A; Bertin, V; Blanc, F; Bloch, P and; Carlson, P; Carroll, M; Cawley, E; Chertok, MB; Danielsson,; M; Dejardin, M; Derre, J; Ealet, A; Eleftheriadis, C and; Faravel, L; Fetscher, W; Fidecaro, M; Filipcic, A; Francis,; D; Fry, J; Gabathuler, E; Gamet, R; Gerber, HJ; Go, A and; Haselden, A; Hayman, PJ; Henry-Couannier, F; Hollander, RW and; Jonand, K; Kettle, PR; Kokkas, P; Kreuger, R; Le Gac, R and; Leimgruber, F; Mandic, I; Manthos, N; Marel, G; Mikuz, M and; Miller, J; Montanet, F; Muller, A; Nakada, T; Pagels, B and; Papadopoulos, I; Pavlopoulos, P; Polivka, G; Rickenbach, R and; Roberts, BL; Ruf, T; Sakeliou, L; Schafer, M; Schaller, LA; and Schietinger, T; Schopper, A; Tauscher, L; Thibault, C and; Touchard, F; Touramanis, C; Van Eijk, CWE; Vlachos, S and; Weber, P; Wigger, O; Wolter, M; Zavrtanik, D; Zimmerman, D; and Locher, MP; Markushin, VE

doi:10.1007/s100520050354

Μονάδα:

Ερευνητικό υλικό ΕΚΠΑ

Τίτλος:

Pion correlations and resonance effects in (p)over-bar-p annihilation at
rest to 2 pi(+)2 pi(-)pi(0)

Γλώσσες Τεκμηρίου:

Αγγλικά

Περίληψη:

We study pi pi correlations in the exclusive reaction (p) over bar p –>
2 pi(+)2 pi(-)pi(0) at rest with complete reconstruction of the
kinematics for each event. Inclusive and differential distributions
properly normalized show an enhancement for small invariant masses
M++,M– of like-pion pairs. An even stronger enhancement is seen for the
double differential distributions for low pion-pair masses. The signal
is strongest when the pi(0) energy is large and much weaker when this
energy is small. Dynamical models with resonances in the final state are
confronted with the data. For the kinematic situation where the rho 3 pi
channel is important the simulation predicts a large pion correlation
for the double differential density, qualitatively explaining the
observed bahaviour. The stochastic HBT mechanism is not supported by
these findings for the exclusive annihilation reaction studied.

Έτος δημοσίευσης:

1999

Συγγραφείς:

Apostolakis, A
Aslanides, E
Backenstoss, G
Bargassa, P and
Behnke, O
Benelli, A
Bertin, V
Blanc, F
Bloch, P and
Carlson, P
Carroll, M
Cawley, E
Chertok, MB
Danielsson,
M
Dejardin, M
Derre, J
Ealet, A
Eleftheriadis, C and
Faravel, L
Fetscher, W
Fidecaro, M
Filipcic, A
Francis,
D
Fry, J
Gabathuler, E
Gamet, R
Gerber, HJ
Go, A and
Haselden, A
Hayman, PJ
Henry-Couannier, F
Hollander, RW and
Jonand, K
Kettle, PR
Kokkas, P
Kreuger, R
Le Gac, R and
Leimgruber, F
Mandic, I
Manthos, N
Marel, G
Mikuz, M and
Miller, J
Montanet, F
Muller, A
Nakada, T
Pagels, B and
Papadopoulos, I
Pavlopoulos, P
Polivka, G
Rickenbach, R and
Roberts, BL
Ruf, T
Sakeliou, L
Schafer, M
Schaller, LA
and Schietinger, T
Schopper, A
Tauscher, L
Thibault, C and
Touchard, F
Touramanis, C
Van Eijk, CWE
Vlachos, S and
Weber, P
Wigger, O
Wolter, M
Zavrtanik, D
Zimmerman, D
and Locher, MP
Markushin, VE

Περιοδικό:

The European Physical Journal C - Particles and Fields

Εκδότης:

Springer-Verlag

Τόμος:

Αριθμός / τεύχος:

Σελίδες:

437-450

Επίσημο URL (Εκδότης):

https://doi.org/10.1007/s100520050354

DOI:

10.1007/s100520050354