2017:groups:np:efttherror
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2017:groups:np:efttherror [2017/06/22 14:36] ramona.groeber |
2017:groups:np:efttherror [2017/07/05 09:20] benjamin.fuks |
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| - | A question that often arises is wheter dimension-8 effects compromise present analysis testing dimension-6 ones. Normally this requires a discussion about the expected size of dimension-8 operators under given assumptions (see for instance "On the Validity of the Effective Field Theory Approach to SM Precision Tests" https://arxiv.org/pdf/1604.06444.pdf) | + | A question that often arises is whether dimension-8 effects compromise present analysis testing dimension-6 ones. Normally this requires a discussion about the expected size of dimension-8 operators under given assumptions (see for instance "On the Validity of the Effective Field Theory Approach to SM Precision Tests" https://arxiv.org/pdf/1604.06444.pdf) |
| - | Here we want to compute a class of dimesnion-8 effects that arises after a change of basis, in such a way that their coefficient is uniquely related to the coefficients of dimension-6 operators. | + | Here we want to compute a class of dimension-8 effects that arises after a change of basis, in such a way that their coefficient is uniquely related to the coefficients of dimension-6 operators. |
| The goal of this analysis will be to understand under what conditions we can trust the dimension-6 analysis in the rotated basis. | The goal of this analysis will be to understand under what conditions we can trust the dimension-6 analysis in the rotated basis. | ||
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| 4) Understand wheter this behavior is the same in other processes | 4) Understand wheter this behavior is the same in other processes | ||
| -> **Shankha**: O_W, O_B and O_WB and O_phi_1 (this one is strongly constrained by custodial symmetry, that's what I remember) (Eq. 2 in Ref. https://arxiv.org/pdf/1211.4580.pdf) which modify the ZWW/ gamma WW couplings as given in Eqs. 27 and 28. | -> **Shankha**: O_W, O_B and O_WB and O_phi_1 (this one is strongly constrained by custodial symmetry, that's what I remember) (Eq. 2 in Ref. https://arxiv.org/pdf/1211.4580.pdf) which modify the ZWW/ gamma WW couplings as given in Eqs. 27 and 28. | ||
| - | -> **Ken** and **Ramona** for generating the model, Shankha for the generation/comparaison | + | -> **Ken** and **Ramona** for generating the model, **Biplob** and **Shankha** for the generation/comparaison |
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| 1) generate the model with and without those contributions | 1) generate the model with and without those contributions | ||
| -> **Benj** | -> **Benj** | ||
| + | |||
| + | * {{:2017:groups:np:hel.dim6.fullytruncated.tgz|Here}} is a model fully truncated at the dim 6 level. | ||
| 2) generate p p > W W (same process as above) and compare the various results. | 2) generate p p > W W (same process as above) and compare the various results. | ||
2017/groups/np/efttherror.txt ยท Last modified: 2017/08/15 13:45 by francesco.riva
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