Constraints on Supersymmetric Flavour Models from b->s gamma

2) ((1). William I. Fine TPI; Italy); Keith A. Olive (1); Liliana Velasco-Sevilla (1; University of Minnesota; U. S. A. (2). The Abdus Salam ICTP

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Constraints on Supersymmetric Flavour Models from b->s gamma

Keith A. Olive (1), Liliana Velasco-Sevilla (1, 2) ((1). William I. Fine TPI, University of Minnesota, U. S. A. (2). The Abdus Salam ICTP, Italy)

High Energy Physics - Phenomenology · Submitted 2 Jan 2008

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim We find that only when the expansion parameter in the down-squark sector is relatively large there is a noticeable effect, which tends to relax the lower limit from b->s gamma on the universal gaugino mass.

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arXiv ID0801.0428 (version 2)

Pith IDWQKUV6HU, Pith's permanent record of this paper and its review

Citation2) ((1). William I. Fine TPI, Italy), Keith A. Olive (1), Liliana Velasco-Sevilla (1, University of Minnesota, U. S. A. (2). The Abdus Salam ICTP. "Constraints on Supersymmetric Flavour Models from b->s gamma." arXiv:0801.0428 (2008). https://pith.science/paper/WQKUV6HU

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What the abstract itself states, as probabilities: claims first 0.02 · states limitation 0.52 · human participants 0.01 · controlled comparison 0.19 · randomized assignment 0.01 · states quantitative result 0.26 · compares with prior results 0.48 · mentions code or data availability 0.02.

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We consider the effects of departures from minimal flavour violations (MFV) in the context of CMSSM-like theories. Second and third generation off-diagonal elements in the Yukawa, sfermion, and trilinear mass matrices are taken to be non-zero at the GUT scale. These are run down together with MSSM parameters to the electroweak scale. We apply constraints from fermion masses and CKM matrix elements to limit the range of the new free parameters of the model. We determine the effect of the departure from MFV on the branching ratio of b->s gamma. We find that only when the expansion parameter in the down-squark sector is relatively large there is a noticeable effect, which tends to relax the lower limit from b->s gamma on the universal gaugino mass. We also find that the expansion parameter associated with the slepton sector needs to be smaller than the corresponding parameter in the down-squark sector in order to be compliant with the bound imposed by the branching ratio of tau-> mu gamma.

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What the classifier reports for each sentence. The number is the probability it gave the label.
#	sentence	role	the authors' own work	states the main conclusion	strength
s0	We consider the effects of departures from minimal flavour violations (MFV) in the context of CMSSM-like theories.	contribution 0.81	0.77	0.03	unclear 0.63
s1	Second and third generation off-diagonal elements in the Yukawa, sfermion, and trilinear mass matrices are taken to be non-zero at the GUT scale.	method 0.88	0.60	0.02	asserted 0.96
s2	These are run down together with MSSM parameters to the electroweak scale.	method 1.00	0.77	0.02	asserted 0.98
s3	We apply constraints from fermion masses and CKM matrix elements to limit the range of the new free parameters of the model.	method 0.94	0.91	0.03	asserted 0.97
s4	We determine the effect of the departure from MFV on the branching ratio of b->s gamma.	contribution 0.64	0.93	0.07	asserted 0.84
s5	We find that only when the expansion parameter in the down-squark sector is relatively large there is a noticeable effect, which tends to relax the lower limit from b->s gamma on the universal gaugino mass.	result 0.96	0.96	0.70	asserted 1.00
s6	We also find that the expansion parameter associated with the slepton sector needs to be smaller than the corresponding parameter in the down-squark sector in order to be compliant with the bound imposed by the branching ratio of tau-> mu gamma.	result 1.00	0.96	0.11	asserted 1.00

What kind of paper the classifier reports this is: theoretical result 0.83 · evidence from simulation or computation 0.93.

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The paper

Original abstract

We consider the effects of departures from minimal flavour violations (MFV) in the context of CMSSM-like theories. Second and third generation off-diagonal elements in the Yukawa, sfermion, and trilinear mass matrices are taken to be non-zero at the GUT scale. These are run down together with MSSM parameters to the electroweak scale. We apply constraints from fermion masses and CKM matrix elements to limit the range of the new free parameters of the model. We determine the effect of the departure from MFV on the branching ratio of b->s gamma. We find that only when the expansion parameter in the down-squark sector is relatively large there is a noticeable effect, which tends to relax the lower limit from b->s gamma on the universal gaugino mass. We also find that the expansion parameter associated with the slepton sector needs to be smaller than the corresponding parameter in the down-squark sector in order to be compliant with the bound imposed by the branching ratio of tau-> mu gamma.

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12 arXiv papers cite this in 16 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers citing it · 13 sentences without a confident label

Cites it as background 3 papers

The potential of family symmetries to predict the soft supersymmetry breaking parameters in addition to the fermion masses has been studied actively in recent years [ref] .

Supersymmetric Musings on the Predictivity of Family Symmetries · Conclusions · 0.99
It has been shown that many new physics models are strictly constrained by the $b →s γ$ transition, see for example Refs. [ref] .

A model with vectorlike fermions and $U(1)_X$ symmetry: CKM unitarity, $b \rightarrow s$ transitions, and prospect at Belle II · Introduction · 0.82
The inclusive branching ratio $B(B̅→X_sγ)$ is well-known to provide important constraints on extensions of the SM [ref] .

Large-m_c Asymptotic Behaviour of O(alpha_s^2) Corrections to B -> X_s gamma · Introduction · 0.97

What it cites · 47 sentences without a confident label

Uses the method or tool of 7 papers

As stated before we have implemented the calculation of $(b→s γ)$ as introduced in [ref] , and adopted in [ref] for the contribution of beyond SM effects.

Untagged B -> X_(s+d) gamma CP asymmetry as a probe for new physics · $𝐛→𝐬 γ$ beyond minimal flavour violation · 0.99
As stated before we have implemented the calculation of $(b→s γ)$ as introduced in [ref] , and adopted in [ref] for the contribution of beyond SM effects.

Quark mass effects in B -> Xs gamma · $𝐛→𝐬 γ$ beyond minimal flavour violation · 0.99
The expressions that we use for $C^(0)χ, H^±_7,8$ and $C^(0)_g̃$ are given in Eqs. A16-A20 of [ref] .

Bounds on flavour violating parameters in supersymmetry · $𝐛→𝐬 γ$ beyond minimal flavour violation · 0.85

Uses data or values from 10 papers

For example, in the CMSSM, the 95% CL lower limit to $m_1/2$ at high $tanβ$ occurs when the calculated central value of the branching ratio of $b→sγ$ is as low as $1.9 ×10^-4$ [ref] .

The Supersymmetric Parameter Space in Light of B-physics Observables and Electroweak Precision Data · General assumptions · 0.91
For example in the CMSSM, the bounds in terms of the flavour violating parameters eq:del_f_XY, for $tanβ=50$, are [ref] |(δ_L, LL)_23| 0.1, |(δ_e, RR)_23| 0.1, |(δ_e, LR)_23,32|0.02,

Sleptonarium (Constraints on the CP and Flavour Pattern of Scalar Lepton Masses) · Constraints on the parameter $_S$ · 0.97
In the SM this is [ref] , $N(E_0=1.6 GeV)= 0.0036 ±0.0006$.

Quark mass effects in B -> Xs gamma · $𝐛→𝐬 γ$ beyond minimal flavour violation · 0.99

Compares with 1 paper

Line 4 is what we obtain when using the top mass assumed in [ref] , and is in perfect agreement with the value obtained there (Eq. 4.14 of that reference).

Quark mass effects in B -> Xs gamma · $𝐛→𝐬 γ$ beyond minimal flavour violation · 0.97

Cites as background 9 papers

The MFV QCD NLO contributions have been computed for the exchanges of charged Higgs boson and charginos in [ref] .

B -> X_s gamma in supersymmetry: large contributions beyond the leading order · Supersymmetric flavour and CP violation problems in FS · 0.87
The MFV QCD NLO contributions have been computed for the exchanges of charged Higgs boson and charginos in [ref] .

Matching Conditions for $b \to s \gamma$ and $b \to s gluon$ in Extensions of the Standard Model · Supersymmetric flavour and CP violation problems in FS · 0.87
The MFV QCD NLO contributions have been computed for the exchanges of charged Higgs boson and charginos in [ref] .

Next-to-Leading QCD Corrections to B\to X_s \gamma in Supersymmetry · Supersymmetric flavour and CP violation problems in FS · 0.87

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