1. |
|
|
2. |
- Bargholtz, Chr., et al.
(författare)
-
The WASA detector facility at CELSIUS
- 2008
-
Ingår i: Nuclear Instruments and Methods in Physics Research Section A. - : Elsevier BV. - 0168-9002 .- 1872-9576. ; 594:3, s. 339-350
-
Tidskriftsartikel (refereegranskat)abstract
- The WASA 4 pi multidetector system, aimed at investigating light meson production in light ion collisions and eta meson rare decays at the CELSIUS storage ring in Uppsala is presented. A unique feature of the system is the use of hydrogen pellets as internal targets for the first time. A detailed description of the design, together with the anticipated and achieved performance parameters are given. (C) 2008 Elsevier B.V. All rights reserved.
|
|
3. |
- Clement, H., et al.
(författare)
-
Search for narrow NN-decoupled resonances in the πNN-system : An overview
- 1996
-
Ingår i: Progress in Particle and Nuclear Physics. - : Elsevier BV. - 0146-6410 .- 1873-2224. ; 36, s. 369-378
-
Tidskriftsartikel (refereegranskat)abstract
- The status of the search for NN-decoupled resonances in the πNN-system is reviewed. After a short survey on the history of dibaryon searches reactions suitable for detecting such resonances are discussed. Special emphasis is put on the pionic double charge exchange, where recently evidence for the signature of a narrow πNN resonance, called d′, with I(J P) = even (0 -) and m = 2.06 GeV has been quoted. Further reactions discussed in this context are the pion photoproduction on the deuteron and the two-pion production in nucleon-nucleon collisions.
|
|
4. |
- Bilger, R, et al.
(författare)
-
2 pi production in pp collisions close to threshold
- 2000
-
Ingår i: NUCLEAR PHYSICS A. - : ELSEVIER SCIENCE BV. ; , s. 469C-472C
-
Konferensbidrag (refereegranskat)abstract
- The reaction pp --> NN pi pi has been measured close to threshold in the energy range from 650 to 775 MeV using the PROMICE/WASA setup at CELSIUS. These data constitute the first exclusive high-statistics measurements of this reaction on a pure hydrogen t
|
|
5. |
- Bilger, R, et al.
(författare)
-
Cross sections of the pp -> pp pi(0) reaction between 310 and 425 MeV
- 2001
-
Ingår i: NUCLEAR PHYSICS A. - : ELSEVIER SCIENCE BV. - 0375-9474. ; 693:3-4, s. 633-662
-
Tidskriftsartikel (refereegranskat)abstract
- Extensive kinematically complete measurements of the pp --> pp pi (0) reaction have been made at six beam energies: 310, 320, 340, 360, 400, and 425 MeV. Angles and energies of both final-state protons are extracted from the forward detector system of the
|
|
6. |
- Bilger, R, et al.
(författare)
-
Recent measurements of the eta production in pd collisions at CELSIUS
- 1996
-
Ingår i: ACTA PHYSICA POLONICA B. - : ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS. ; , s. 2985-2991
-
Konferensbidrag (refereegranskat)abstract
- The reactions pd --> eta + X have been measured at four beam energies: 930, 965, 1037 and 1100 MeV. The reactions were identified by detecting charged particles in plastic scintillator detectors and the eta photons in two arrays of CsI(Na) crystals. A pre
|
|
7. |
- Bilger, R, et al.
(författare)
-
Search for a narrow pi NN-resonance in pp->pp pi(+)pi(-)
- 1996
-
Ingår i: PROGRESS IN PARTICLE AND NUCLEAR PHYSICS. - : PERGAMON PRESS LTD. ; , s. 379-381
-
Konferensbidrag (refereegranskat)abstract
- We report on the current status of the search for the pi NN-resonance d' with I(J(P)) = 0(0(-)) and M = 2.06 GeV in the 2 pi production in pp collisions.
|
|
8. |
|
|
9. |
|
|
10. |
- Brodowski, W, et al.
(författare)
-
A signal of a narrow pi NN resonance in pp->pp pi(-)pi(+)
- 1996
-
Ingår i: ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI. - : SPRINGER VERLAG. - 0939-7922. ; 355:1, s. 5-8
-
Tidskriftsartikel (refereegranskat)abstract
- We report on the first exclusive measurement of the 2 pi production in NN collisions at T-p = 750 MeV using a H-2 cluster jet target and the WASA/PROMICE detector at CELSIUS. In the invariant-mass spectrum M(pp pi-) we observe a narrow peak at 2.063(2) Ge
|
|
11. |
- Brodowski, W, et al.
(författare)
-
Exclusive measurement of pp -> pp pi(+)pi(-) at CELSIUS
- 2000
-
Ingår i: ACTA PHYSICA POLONICA B. - : ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS. - 0587-4254. ; 31:10-11, s. 2295-2298
-
Tidskriftsartikel (refereegranskat)abstract
- With the PROMICE/WASA detector setup at CELSIUS the reaction pp --> NN pi pi has been measured in the energy range from 650 to 775 MeV. These data constitute the first exclusive high-statistics measurements on a pure hydrogen target, supplying both differ
|
|
12. |
|
|
13. |
|
|
14. |
- Calén, H., et al.
(författare)
-
Detector setup for a storage ring with an internal target
- 1996
-
Ingår i: Nuclear Instruments and Methods in Physics Research Section A. - : Elsevier BV. - 0168-9002 .- 1872-9576. ; 379:1, s. 57-75
-
Tidskriftsartikel (refereegranskat)abstract
- A detector setup for the cooler storage ring CELSIUS is described. The setup detects particles produced in interactions between the internal beam and a cluster-jet target. Particles emitted in the forward direction are measured by means of arrays of plastic scintillators and proportional counters. Particles, particularly photons, emitted more isotropically are measured by means of two calorimeters containing CsI(Na) crystals. The performance of the setup is given for neutral meson production in proton-proton and proton-deuteron interactions in the energy range 290-1360 MeV.
|
|
15. |
- Calén, H, et al.
(författare)
-
Measurement of the quasifree pn -> pn eta reaction
- 1998
-
Ingår i: PHYSICAL REVIEW C-NUCLEAR PHYSICS. - : AMERICAN PHYSICAL SOC. - 0556-2813. ; 58:5, s. 2667-2670
-
Tidskriftsartikel (refereegranskat)abstract
- The first measurement of the cross section of the quasifree pn-->pn eta reaction has been carried out at the CELSIUS storage ring using a deuterium internal cluster jet target. The energy dependence of the cross section is extracted using a fixed incident
|
|
16. |
- Calén, H, et al.
(författare)
-
Upper limits for a narrow dibaryon in pp collisions at 200 and 310 MeV
- 1998
-
Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 427:3-4, s. 248-253
-
Tidskriftsartikel (refereegranskat)abstract
- Dibaryons, forbidden by mass to decay into NN pi channel and by quantum numbers into NN channel, may still have escaped detection. In fact, recently an observation of a narrow dibaryon (D) with the mass close to 1920 MeV was reported in the process pp -->
|
|
17. |
- Clement, H, et al.
(författare)
-
Search for narrow NN-decoupled resonances in the pi NN-system - An overview
- 1996
-
Ingår i: PROGRESS IN PARTICLE AND NUCLEAR PHYSICS. - : PERGAMON PRESS LTD. ; , s. 369-378
-
Konferensbidrag (refereegranskat)abstract
- The status of the search for NN-decoupled resonances in the pi NN-system is reviewed. After a short survey on the history of dibaryon searches reactions suitable for detecting such resonances are discussed. Special emphasis is put on the pionic double cha
|
|
18. |
|
|
19. |
- Zlomanczuk, J, et al.
(författare)
-
Differential cross sections of the pp -> pp pi(0) reaction from 310 to 425 MeV
- 2000
-
Ingår i: NUCLEAR PHYSICS A. - : ELSEVIER SCIENCE BV. - 0375-9474. ; 663, s. 452C-456C
-
Tidskriftsartikel (refereegranskat)abstract
- Measurements of the differential cross sections of the pp --> pp pi(0) reaction at 310, 320, 340, 360, 400 and 425 MeV have been carried out at the CELSIUS storage ring in Uppsala. An attempt has been made to describe the distributions obtained in terms o
|
|
20. |
|
|
21. |
- Betsch, A, et al.
(författare)
-
Observation of strong final-state effects in pi(+) production in pp collisions at 400 MeV
- 1999
-
Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 446:2, s. 179-184
-
Tidskriftsartikel (refereegranskat)abstract
- Differential cross sections of the reactions pp --> d pi(+) and pp --> pn pi(+) have been measured at T-p = 400 MeV by detecting the charged ejectiles in the angular range 4 degrees less than or equal to Theta(Lab) less than or equal to 21 degrees. The de
|
|
22. |
- Bilger, R, et al.
(författare)
-
CELSIUS as an eta factory
- 1997
-
Ingår i: NUCLEAR PHYSICS A. - : ELSEVIER SCIENCE BV. - 0375-9474. ; 626:1-2, s. 93C-96C
-
Tidskriftsartikel (refereegranskat)abstract
- The WASA project at the CELSIUS storage ring is being prepared for high-luminosity experiments to study rare decays of light mesons, in particular the eta meson. The CELSIUS ring together with the newly developed pellet target will serve as an efficient e
|
|
23. |
|
|
24. |
|
|
25. |
- Bilger, R, et al.
(författare)
-
Spectator tagging in quasi-free pn-reactions on deuterium at PROMICE/WASA, CELSIUS
- 2000
-
Ingår i: Nuclear Physics A. - : Elsevier Science B.V. Holland. ; , s. 1053c-1056c
-
Konferensbidrag (refereegranskat)abstract
- A set of silicon detectors has been added to the PROMICE/WASA (P/W) experiment at CELSIUS. These detectors have been used for spectator-proton tagging in proton deuteron collisions to investigate proton-neutron reactions at intermediate energies. The perf
|
|
26. |
- Bilger, R, et al.
(författare)
-
Threshold eta production in pN reactions at Celsius
- 1998
-
Ingår i: ACTA PHYSICA POLONICA B. - : ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS. ; , s. 2981-2985
-
Konferensbidrag (refereegranskat)abstract
- The quasi-free p+n-->d+eta reaction cross section has been measured at threshold using 1295 MeV protons in the CELSIUS storage ring and an internal cluster-jet deuterium target [1]. Excess energies from threshold to 10 MeV in the center of mass of the fin
|
|
27. |
- Bilger, R, et al.
(författare)
-
Two-pion production in proton-proton collisions near threshold at Celsius
- 1998
-
Ingår i: ACTA PHYSICA POLONICA B. - : ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS. ; , s. 2987-2991
-
Konferensbidrag (refereegranskat)abstract
- Two-pion production reactions in proton-proton collisions near threshold are measured using an internal cluster-jet hydrogen target and the WASA/PROMICE detector at the CELSIUS storage ring. Four out of the five possible two-pion production reactions are
|
|
28. |
|
|
29. |
- Brodowski, W, et al.
(författare)
-
Two-Pion Production in Nucleon-Nucleon Collisions
- 2002
-
Ingår i: Proc. Int. Conf. on Production, Properties and Interaction of Mesons, MESON 2002, Cracow, Poland, 2002..
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)
|
|
30. |
|
|
31. |
|
|
32. |
- Johansson, Tord, et al.
(författare)
-
Meson production in light ion collisions at CELSIUS
- 1997
-
Ingår i: NUCLEAR PHYSICS A. - : ELSEVIER SCIENCE BV. ; , s. 29C-40C
-
Konferensbidrag (refereegranskat)abstract
- The PROMICE and WASA collaborations are engaged in a common programme in studies of pp and pd reactions at the CELSIUS storage ring at the The Svedberg Laboratory, Uppsala. Emphasis is placed on measurements of neutral meson production in the threshold re
|
|
33. |
|
|
34. |
- Zlomanczuk, J, et al.
(författare)
-
Near-threshold pion production in pN collisions at CELSIUS
- 1998
-
Ingår i: ACTA PHYSICA POLONICA B. - : ACTA PHYSICA POLONICA B, JAGELLONIAN UNIV, INST PHYSICS. ; , s. 3141-3148
-
Konferensbidrag (refereegranskat)abstract
- The pp --> pp pi(o) and pn --> pp pi(-) reactions have been measured at 310, 320 and 340 MeV using the CELSIUS proton beam and H-1 and H-2 internal cluster-jet targets. The pi(o) production at 310 MeV has been fully analyzed and a significant deviation fr
|
|
35. |
- Zlomanczuk, J, et al.
(författare)
-
Pionic d-wave effects in pp -> pp pi(0) near threshold
- 1998
-
Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 436:3-4, s. 251-256
-
Tidskriftsartikel (refereegranskat)abstract
- The angular distribution of neutral pions produced in the pp --> pp pi(0) reaction has been measured at a beam energy of 310 MeV. Significant deviations from isotropy are found, which increase for small excitation energies of the final proton-proton pair.
|
|