A study of the proton spectra following the capture of K- in 6Li and 12C with FINUDA

被引：56

作者：

Agnello, M.

Beer, G.

Benussi, L.

Bertani, M.

Bhang, H. C.

Bianco, S.

Bonomi, G.

Botta, E.

Bregant, M.

Bressani, T.

Bufalino, S.

Busso, L.

Calvo, D.

Camerini, P.

Cerello, P.

Dalena, B.

De Mori, F.

D'Erasmo, G.

Di Santo, D.

Elia, D.

Fabbri, F. L.

Faso, D.

Feliciello, A.

Filippi, A.

Filippini, V.

Fini, R. A.

Fiore, E. M.

Fujioka, H.

Gianotti, P.

Grion, N.

Hartmann, O.

Krasnoperov, A.

Lenti, V.

Lucherini, V.

Manzari, V.

Marcello, S.

Maruta, T.

Mirfakhrai, N.

Morra, O.

Nagae, T.

Olin, A.

Outa, H.

Pace, E.

Pallotta, M.

Palomba, M.

Pantaleo, A.

Panzarasa, A.

Paticchio, V.

Piano, S.

Pompili, F.

机构：

[1] Ist Nazl Fis Nucl, Sez Torino, Turin, Italy

[2] Politecn Torino, Dipartimento Fis, Turin, Italy

[3] Univ Victoria, Victoria, BC V8W 2Y2, Canada

[4] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[5] Seoul Natl Univ, Dept Phys, Seoul 151742, South Korea

[6] Univ Brescia, Dipartimento Meccan, I-25121 Brescia, Italy

[7] Ist Nazl Fis Nucl, Sez Pavia, I-27100 Pavia, Italy

[8] Univ Turin, Dipartimento Fis Sperimentale, I-10124 Turin, Italy

[9] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy

[10] Ist Nazl Fis Nucl, Sez Trieste, I-34014 Trieste, Italy

[11] Univ Turin, Dipartimento Fis Gen, I-10124 Turin, Italy

[12] Dipartimento InterAteneo Fis, Bari, Italy

[13] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy

[14] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

[15] JINR, Dubna, Moscow Region, Russia

[16] High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki 3050801, Japan

[17] Shahid Beheshti Univ, Dept Phys, Tehran 19834, Iran

[18] IFSI, INAF, Sez Torino, Turin, Italy

[19] TRIUMF, Vancouver, BC V6T 2A3, Canada

[20] RIKEN, Wako, Saitama 3510198, Japan

来源：

NUCLEAR PHYSICS A | 2006年 / 775卷 / 1-2期

关键词：

K- induced reaction in nuclei; proton inclusive spectra; deeply bound K- -nucleons states; FINUDA experiment;

D O I：

10.1016/j.nuclphysa.2006.06.004

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Momenta spectra of protons emitted following the capture of K- in Li-6 and C-12 have been measured with 1% resolution. The C-12 spectrum is smooth whereas for Li-6 a well defined peak appears at about 500 MeV/c. The first observation of a structure in this region was identified as a strange tribaryon or, possibly, a K-nuclear state. The peak is correlated with a pi(-) coming from Sigma(-) decay in flight, selected by setting the pi momentum larger than 275 MeV/c. The Sigma(-) could be produced, together with a 500 MeV/c proton, by the capture of a K- in a deuteron-cluster substructure of the Li-6 nucleus. The capture rate for such a reaction is (1.62 +/- 0.23stat(-0.44)(+0.71)(sys))%/K-stop(-), in agreement with the existing observations on stop, targets and with the hypothesis that the Li-6 nucleus can be interpreted as a (d + alpha) cluster. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：35 / 50

页数：16

共 26 条

[1] First results on Λ12C production at DAΦNE [J].

Agnello, A ;

Beer, G ;

Benussi, L ;

Bertani, A ;

Bhang, HC ;

Bianco, S ;

Botta, E ;

Bregant, M ;

Bressani, T ;

Busso, L ;

Calvo, D ;

Camerini, P ;

Caponero, M ;

Cerello, P ;

Dalena, B ;

De Mori, F ;

D'Erasmo, G ;

Di Santo, D ;

Donà, R ;

Elia, D ;

Fabbri, FL ;

Faso, D ;

Feliciello, A ;

Filippi, A ;

Filippini, V ;

Fini, R ;

Fiore, ME ;

Fujioka, H ;

Gianotti, P ;

Grion, N ;

Krasnoperov, A ;

Lucherini, V ;

Lenti, V ;

Manzari, V ;

Marcello, S ;

Maruta, T ;

Mirfakhrai, N ;

Morra, O ;

Nagae, T ;

Olin, A ;

Outa, H ;

Pace, E ;

Pallotta, M ;

Palomba, M ;

Pantaleo, A ;

Panzarasa, A ;

Paticchio, V ;

Piano, S ;

Pompili, F ;

Rui, R .

PHYSICS LETTERS B, 2005, 622 (1-2) :35-44

[2] First results from the FINUDA experiment at DAφNE [J].

Agnello, M ;

Beer, G ;

Benussi, L ;

Bertani, M ;

Bianco, S ;

Botta, E ;

Bressani, T ;

Busso, L ;

Calvo, D ;

Camerini, P ;

Cerello, P ;

Dalena, B ;

De Mori, F ;

D'Erasmo, G ;

Di Santo, D ;

Fabbri, FL ;

Faso, D ;

Feliciello, A ;

Filippi, A ;

Filippini, V ;

Fiore, EM ;

Fujioka, H ;

Gianotti, P ;

Grion, N ;

Krasnoperov, A ;

Lucherini, V ;

Marcello, S ;

Maruta, T ;

Mirfakhrai, N ;

Morra, O ;

Olin, A ;

Pace, E ;

Palomba, M ;

Pantaleo, A ;

Panzarasa, A ;

Paticchio, V ;

Piano, S ;

Pompili, F ;

Rui, R ;

Simonetti, G ;

So, H ;

Tomassini, S ;

Wheadon, R ;

Zenoni, A .

NUCLEAR PHYSICS A, 2005, 754 :399C-409C

[3] Evidence for a kaon-bound state K- pp produced in K- absorption reactions at rest -: art. no. 212303 [J].

Agnello, M ;

Beer, G ;

Benussi, L ;

Bertani, M ;

Bianco, S ;

Botta, E ;

Bressani, T ;

Busso, L ;

Calvo, D ;

Camerini, P ;

Cerello, P ;

Dalena, B ;

De Mori, F ;

D'Erasmo, G ;

Di Santo, D ;

Fabbri, FL ;

Faso, D ;

Feliciello, A ;

Filippi, A ;

Filippini, V ;

Fiore, EM ;

Fujioka, H ;

Gianotti, P ;

Grion, N ;

Lucherini, V ;

Marcello, S ;

Maruta, T ;

Mirfakhrai, N ;

Morra, O ;

Nagae, T ;

Olin, A ;

Outa, H ;

Pace, E ;

Palomba, M ;

Pantaleo, A ;

Panzarasa, A ;

Paticchio, V ;

Piano, S ;

Pompili, F ;

Rui, R ;

Simonetti, G ;

So, H ;

Tomassini, S ;

Toyoda, A ;

Wheadon, R ;

Zenoni, A .

PHYSICAL REVIEW LETTERS, 2005, 94 (21)

[4] Nuclear (K)over-bar bound states in light nuclei -: art. no. 044005 [J].

Akaishi, Y ;

Yamazaki, T .

PHYSICAL REVIEW C, 2002, 65 (04)

[5] ENERGY DEPENDENCE OF QUASI-FREE (PI+,2P) REACTIONS AND EVIDENCE FOR REACTION PI++(2N)-]PI+P+P IN NUCLEI [J].

BRESSANI, T ;

CHARPAK, G ;

FAVIER, J ;

MASSONNET, L ;

MEYERHOF, WE ;

ZUPANCIC, C .

NUCLEAR PHYSICS B, 1969, B 9 (03) :427-+

[6] ENERGY-SPECTRA OF SINGLE NEUTRONS AND CHARGED-PARTICLES EMITTED FOLLOWING THE ABSORPTION OF STOPPED NEGATIVE PIONS IN HE-4 [J].

CERNIGOI, C ;

GABRIELLI, I ;

GRION, N ;

PAULI, G ;

SAITTA, B ;

RICCI, RA ;

BOCCACCIO, P ;

VIESTI, G .

NUCLEAR PHYSICS A, 1981, 352 (03) :343-354

[7] INCLUSIVE NEUTRON, PROTON AND DEUTERON ENERGY-SPECTRA FROM STOPPED PI-ABSORPTION IN LI-6, BE-9, O-16 AND AL-27 [J].

CERNIGOI, C ;

GRION, N ;

PAULI, G ;

RUI, R ;

CHERUBINI, R .

NUCLEAR PHYSICS A, 1986, 456 (04) :599-620

[8] Study of chirally motivated low-energy K- optical potentials [J].

Cieply, A ;

Friedman, E ;

Gal, A ;

Mares, J .

NUCLEAR PHYSICS A, 2001, 696 (1-2) :173-193

[9] Kaonic nuclei studied based on a new framework of antisymmetrized molecular dynamics -: art. no. 044313 [J].

Doté, A ;

Horiuchi, H ;

Akaishi, Y ;

Yamazaki, T .

PHYSICAL REVIEW C, 2004, 70 (04) :044313-1

[10] High-density (K)over-bar nuclear systems with isovector deformation [J].

Doté, A ;

Horiuchi, H ;

Akaishi, Y ;

Yamazaki, T .

PHYSICS LETTERS B, 2004, 590 (1-2) :51-56

← 1 2 3 →