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Title Resonance excitations in the 7Be + d experiment at CERN ISOLDE
Author(s) Ali, Sk M (Bose Inst., Kolkata) ; Gupta, D (Bose Inst., Kolkata) ; Kundalia, K (Bose Inst., Kolkata) ; Saha, Swapan K (Bose Inst., Kolkata) ; Tengblad, O (Madrid, Inst. Estructura Materia) ; Ovejas, J D (Madrid, Inst. Estructura Materia) ; Perea, A (Madrid, Inst. Estructura Materia) ; Martel, I (U. Grenoble Alpes ; TIMA, Grenoble) ; Cederkall, J (Lund U.) ; Park, J (Lund U.) Show all 11 authors
Publication 2019
Number of pages 2
In: DAE Symp. Nucl. Phys. 64 (2019) pp.570-571
In: 64th DAE BRNS Symposium on nuclear physics, Lucknow, Uttar Pradesh, India, 23-27 Dec 2019, pp.570-571
Subject category Nuclear Physics - Theory ; Nuclear Physics - Experiment
Accelerator/Facility, Experiment CERN ISOLDE
Abstract The Big Bang Nucleosynthesis (BBN) theory has been very successful in predicting the observed abundances of light elements like 2H, 3,4He. There is, however, a serious discrepancy of a factor of about four in the observed abundance of 7Li as compared to that predicted by the BBN theory [1−2]. The high precision measurement of the baryon to photon ratio η by the Wilkinson Microwave Anisotropy Probe (WMAP) and recent observations of metal poor halo stars shows that the 7Li abundance predicted by the BBN theory is about 5.12×1010, whereas the observed value is about 1.23×1010. This anomaly has been unsolved for decades and is well known. Several avenues have been searched for a solution, of which the resonance excitations in reactions with 7Be appear to be very attractive [3].

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 Record created 2022-10-12, last modified 2022-10-20


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