Study of the ABC enhancement in the d d → a α X0 reaction

R. Wurzinger; O. Bing; M. Boivin; P. Courtat; G. Fäldt; R. Gacougnolle; A. Gårdestig; F. Hibou; Y. Le Bornec; J. M. Martin; F. Plouin; B. Tatischeff; C. Wilkin; N. Willis; J. Yonnet; A. Zghiche

doi:10.1016/S0370-2693(98)01464-6

Study of the ABC enhancement in the d d → a α X⁰ reaction

R. Wurzinger, O. Bing, M. Boivin, P. Courtat, G. Fäldt, R. Gacougnolle, A. Gårdestig, F. Hibou, Y. Le Bornec, J. M. Martin, F. Plouin, B. Tatischeff, C. Wilkin, N. Willis, J. Yonnet, A. Zghiche

Research output: Contribution to journal › Article › peer-review

Abstract

The d d → α X⁰ reaction at beam energies close to the η threshold shows very strong structure in the missing mass corresponding to the ABC enhancement. The deuteron tensor analysing power A_yy, and the slope of the vector analysing power A_y with respect to angle, have been measured for this reaction around the forward direction. Both signals are small, and their variations with the α-particle momentum are in broad agreement with a theoretical model in which each pair of nucleons in the projectile and target deuterons undergoes pion production through the NN → dπ reaction.

Original language	English
Pages (from-to)	423-427
Number of pages	5
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	445
Issue number	3-4
DOIs	https://doi.org/10.1016/S0370-2693(98)01464-6
Publication status	Published - 7 Jan 1999
Externally published	Yes

Keywords

ABC effect
Analysing powers
Two-pion production

Access to Document

10.1016/S0370-2693(98)01464-6

Cite this

Wurzinger, R., Bing, O., Boivin, M., Courtat, P., Fäldt, G., Gacougnolle, R., Gårdestig, A., Hibou, F., Le Bornec, Y., Martin, J. M., Plouin, F., Tatischeff, B., Wilkin, C., Willis, N., Yonnet, J., & Zghiche, A. (1999). Study of the ABC enhancement in the d d → a α X⁰ reaction. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 445(3-4), 423-427. https://doi.org/10.1016/S0370-2693(98)01464-6

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title = "Study of the ABC enhancement in the d d → a α X0 reaction",

abstract = "The d d → α X0 reaction at beam energies close to the η threshold shows very strong structure in the missing mass corresponding to the ABC enhancement. The deuteron tensor analysing power Ayy, and the slope of the vector analysing power Ay with respect to angle, have been measured for this reaction around the forward direction. Both signals are small, and their variations with the α-particle momentum are in broad agreement with a theoretical model in which each pair of nucleons in the projectile and target deuterons undergoes pion production through the NN → dπ reaction.",

keywords = "ABC effect, Analysing powers, Two-pion production",

author = "R. Wurzinger and O. Bing and M. Boivin and P. Courtat and G. F{\"a}ldt and R. Gacougnolle and A. G{\aa}rdestig and F. Hibou and \{Le Bornec\}, Y. and Martin, \{J. M.\} and F. Plouin and B. Tatischeff and C. Wilkin and N. Willis and J. Yonnet and A. Zghiche",

year = "1999",

month = jan,

day = "7",

doi = "10.1016/S0370-2693(98)01464-6",

language = "English",

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pages = "423--427",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

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Wurzinger, R, Bing, O, Boivin, M, Courtat, P, Fäldt, G, Gacougnolle, R, Gårdestig, A, Hibou, F, Le Bornec, Y, Martin, JM, Plouin, F, Tatischeff, B, Wilkin, C, Willis, N, Yonnet, J & Zghiche, A 1999, 'Study of the ABC enhancement in the d d → a α X⁰ reaction', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 445, no. 3-4, pp. 423-427. https://doi.org/10.1016/S0370-2693(98)01464-6

TY - JOUR

T1 - Study of the ABC enhancement in the d d → a α X0 reaction

AU - Wurzinger, R.

AU - Bing, O.

AU - Boivin, M.

AU - Courtat, P.

AU - Fäldt, G.

AU - Gacougnolle, R.

AU - Gårdestig, A.

AU - Hibou, F.

AU - Le Bornec, Y.

AU - Martin, J. M.

AU - Plouin, F.

AU - Tatischeff, B.

AU - Wilkin, C.

AU - Willis, N.

AU - Yonnet, J.

AU - Zghiche, A.

PY - 1999/1/7

Y1 - 1999/1/7

N2 - The d d → α X0 reaction at beam energies close to the η threshold shows very strong structure in the missing mass corresponding to the ABC enhancement. The deuteron tensor analysing power Ayy, and the slope of the vector analysing power Ay with respect to angle, have been measured for this reaction around the forward direction. Both signals are small, and their variations with the α-particle momentum are in broad agreement with a theoretical model in which each pair of nucleons in the projectile and target deuterons undergoes pion production through the NN → dπ reaction.

AB - The d d → α X0 reaction at beam energies close to the η threshold shows very strong structure in the missing mass corresponding to the ABC enhancement. The deuteron tensor analysing power Ayy, and the slope of the vector analysing power Ay with respect to angle, have been measured for this reaction around the forward direction. Both signals are small, and their variations with the α-particle momentum are in broad agreement with a theoretical model in which each pair of nucleons in the projectile and target deuterons undergoes pion production through the NN → dπ reaction.

KW - ABC effect

KW - Analysing powers

KW - Two-pion production

U2 - 10.1016/S0370-2693(98)01464-6

DO - 10.1016/S0370-2693(98)01464-6

M3 - Article

AN - SCOPUS:0347877235

SN - 0370-2693

VL - 445

SP - 423

EP - 427

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 3-4