Big-bang nucleosynthesis and leptogenesis in the CMSSM

Kubo, Munehiro; Sato, Joe; Shimomura, Takashi; Takanishi, Yasutaka; Yamanaka, Masato

doi:10.1103/physrevd.97.115013

Cited by 3 publications

(5 citation statements)

References 102 publications

(181 reference statements)

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“…[16] together with the corresponding observed values (red circles in Fig. 18 for 133 Cs, 85 Rb and 6,7 Li), and similarly for the trimers (red boxes for the corresponding observed values).…”

Section: Efimov Scenario: Cal Versus Expmentioning

confidence: 61%

“…The states move to the left as λ decreases (a −1 decreases). In the region a −1 < 0, there is no 2-body bound state, but the blue curves for the trimer show that the , respectively; the corresponding observed values for the 133 Cs, 85 Rb and 7 Li tetramers are given by red circles, and similarly for trimers by red boxes (see the text). Taken from Ref.…”

Section: Efimov Scenario: Cal Versus Expmentioning

confidence: 93%

“…Surprisingly to nuclear physicists, strength (in other word, scattering length) of the interaction between some ultra-cold atoms, such as 133 Cs, 85 Rb and 7 Li at µK, can be changed/tuned by a magnetic field from outside utilizing Feshbach resonances of the atom pair located near the threshold. Realization of this experimental technics (at ∼ 2006) has very much developed the cold-atom physics (Efimov physics).…”

Section: Efimov Scenario: Cal Versus Expmentioning

confidence: 99%

“…Our reaction rates are cited in recent review papers of BBN [78] and CBBN [77] and have been actually used, for example, in Refs. [85][86][87].…”

Section: Catalyzed Big-bang Nucleosynthesis (Cbbn) Reactionsmentioning

confidence: 99%

“…The thin solid blue curves denote the trimer spectrum. The critical scattering lengths where the tetramer energies E the corresponding observed values for the 133 Cs,85 Rb and 7 Li tetramers are given by red circles, and similarly for trimers by red boxes (see the text). Taken from Ref [16]…”

mentioning

confidence: 99%

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Study of various few-body systems using Gaussian expansion method (GEM)

Hiyama

Kamimura

2018

Front. Phys.

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We review our calculation method, Gaussian expansion method (GEM), and its applications to various few-body (3-to 5-body) systems such as 1) few-nucleon systems, 2) few-body structure of hypernuclei, 3) clustering structure of light nuclei and unstable nuclei, 4) exotic atoms/molecules, 5) cold atoms, 6) nuclear astrophysics and 7) structure of exotic hadrons. Showing examples in our published papers, we explain i) high accuracy of GEM calculations and its reason, ii) wide applicability of GEM, iii) successful predictions by GEM calculations before measurements. GEM was proposed 30 years ago and has been applied to a variety of subjects. To solve few-body Schrödinger equations accurately, use is made of the Rayleigh-Ritz variational method for bound states, the complex-scaling method for resonant states and the Kohn-type variational principle to S-matrix for scattering states. The total wave function is expanded in terms of few-body Gaussian basis functions spanned over all the sets of rearrangement Jacobi coordinates. Gaussians with ranges in geometric progression work very well both for short-range and long-range behavior of the few-body wave functions. Use of Gaussians with complex ranges gives much more accurate solution especially when the wave function has many oscillations. * Electronic address: hiyama@phys.kyushu-u.ac.jp † Electronic address: mkamimura@riken.jp C. Prediction of spin-orbit splitting in hypernuclei 15 D. Prediction of neutron-rich hypernuclei 16 E. Prediction of hypernuclear states with strangeness S = −2 17 F. Strategy of studying hypernuclei and Y N and Y Y interactions 18

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Section: Efimov Scenario: Cal Versus Expmentioning

confidence: 61%

Section: Efimov Scenario: Cal Versus Expmentioning

confidence: 93%

Section: Efimov Scenario: Cal Versus Expmentioning

confidence: 99%

“…Our reaction rates are cited in recent review papers of BBN [78] and CBBN [77] and have been actually used, for example, in Refs. [85][86][87].…”

Section: Catalyzed Big-bang Nucleosynthesis (Cbbn) Reactionsmentioning

confidence: 99%

mentioning

confidence: 99%

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Study of various few-body systems using Gaussian expansion method (GEM)

Hiyama

Kamimura

2018

Front. Phys.

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Solution for Lithium Problem from Supersymmetric Standard Model

Sato¹,

Takanishi²,

Yamanaka³

2022

Quantum Science

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Solving the muon g-2 anomaly in CMSSM extension with non-universal gaugino masses

Wang

Yang

et al. 2018

J. High Energ. Phys.

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We propose to generate non-universal gaugino masses in SU(5) Grand Unified Theory (GUT) with the generalized Planck-scale mediation SUSY breaking mechanism, in which the nonuniversality arises from proper wavefunction normalization with lowest component VEVs of various high dimensional representations of the Higgs fields of SU(5) and an unique F-term VEV by the singlet. Different predictions on gaugino mass ratios with respect to widely studied scenarios are given. The gluino-SUGRA-like scenario, where gluinos are much heavier than winos, bino and universal scalar masses, can be easily realized with appropriate combinations of such highrepresentation Higgs fields. With six GUT-scale free parameters in our scenario, we can solve elegantly the tension between mSUGRA and the present experimental results, including the muon g-2, the dark matter (DM) relic density and the direct sparticle search bounds from the LHC. Taking into account the current constraints in our numerical scan, we have the following observations: (i) The large-tan β ( 35) samples with a moderate M 3 (∼ 5 TeV), a small |A 0 /M 3 | ( 0.35) and a small m A ( 4 TeV) are favoured to generate a 125 GeV SM-like Higgs and predict a large muon g-2, while the stop mass and µ parameter, mainly determined by |M 3 | ( M 0 , |M 1 |, |M 2 |), can be about 6 TeV; (ii) The moderate-tan β (35 ∼ 40) samples with a negative M 3 can have a light smuon (250 ∼ 450 GeV) but a heavy stau ( 1 TeV), which predict a large muon g-2 but a small Br(B s → µ + µ − ); (iii) To obtain the right DM relic density, the annihilation mechanisms should be stau exchange, stau coannihilation, chargino coannihilation, slepton annihilation and the combination of two or three of them; (iv) To obtain the right DM relic density, the spin-independent DM-nucleon cross section is typically much smaller than the present limits of XENON1T 2018 and also an order of magnitude lower than the future detection sensitivity of LZ and XENONnT experiments.scale |M 1/2 | should be larger than about 1 TeV (mg 2|M 1/2 | ), and thus the bino-like neutralino is bounded to be higher than about 400 GeV. All the electroweakinos (higgsinos, sleptons, sneutrinos) are all bounded to be heavier than several hundreds of GeV in CMSSM, and hence the SUSY contributions to the muon g-2 cannot be large enough to account for the discrepancy reported by the Brookhaven AGS [3][4][5]. In fact, CMSSM was found to be excluded at 90% confidence level [6] if it is required to account for both the muon g-2 anomaly and the recent LHC constraints on SUSY particles. The neutralino dark matter in CMSSM, which is heavier than several hundreds of GeV, can mainly have four annihilation mechanisms: stau coannihilation, stop coannihilation, A/H funnel, hybrid (note that the 3 h/Z funnel cannot happen and the focus point or χ ± 1 coannihilation is severely constrained by the recent dark matter direct detection limits) [5,7]. We should mention that even if only the DM relic density upper bound is considered in addition to the muon g-2, a glob...

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Big-bang nucleosynthesis and leptogenesis in the CMSSM

Cited by 3 publications

References 102 publications

Study of various few-body systems using Gaussian expansion method (GEM)

Study of various few-body systems using Gaussian expansion method (GEM)

Solution for Lithium Problem from Supersymmetric Standard Model

Solving the muon g-2 anomaly in CMSSM extension with non-universal gaugino masses

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