2017:groups:np:efttherror
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2017:groups:np:efttherror [2017/06/22 12:15] olivier.mattelaer |
2017:groups:np:efttherror [2017/08/15 13:45] (current) francesco.riva |
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| [Estimation of the theoretical uncertainties in EFT] | [Estimation of the theoretical uncertainties in EFT] | ||
| - | ** interested people:** Olivier Mattelaer, Ken Mimasu, Kentarou Mawatari, Shankha Banerjee, Biplob Bhattacherjee, Francesco Riva, Benjamin Fuks, Ramona Groeber, Julia Harz, Jorge de Blas, Kristin Lohwasser, Alexandra Carvalho... ADD YOUR NAME HERE | + | ** interested people:** Olivier Mattelaer, Ken Mimasu, Kentarou Mawatari, Shankha Banerjee, Biplob Bhattacherjee, Francesco Riva, Benjamin Fuks, Ramona Groeber, Julia Harz, Jorge de Blas, Kristin Lohwasser, Alexandra Carvalho, Adam Falkowski... ADD YOUR NAME HERE |
| - | 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) | ||
| - | 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. | + | 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 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. | ||
| Line 32: | Line 33: | ||
| 1) perform field redefinition to find the coefficient of O_8 as a function of the coefficient of O_1 | 1) perform field redefinition to find the coefficient of O_8 as a function of the coefficient of O_1 | ||
| - | -> Francesco | + | -> **Francesco** |
| 2) comupte contribution to \psi\psi -> V_L V_L from O_1, O_2 and O_8 | 2) comupte contribution to \psi\psi -> V_L V_L from O_1, O_2 and O_8 | ||
| Use Re-Weighting method to avoid statistical error in the various generation | Use Re-Weighting method to avoid statistical error in the various generation | ||
| - | -> Model and param_card created by Ken -> Run by Olivier | + | -> Model and param_card created by Ken + **Ramona** -> Run by **Olivier** |
| 3) Impose that the quadratic piece be bigger than the linear piece, and test in these conditions how big the dimension-8 contribution becomes | 3) Impose that the quadratic piece be bigger than the linear piece, and test in these conditions how big the dimension-8 contribution becomes | ||
| - | -> Olivier | + | -> **Olivier** |
| 4) Understand wheter this behavior is the same in other processes | 4) Understand wheter this behavior is the same in other processes | ||
| - | -> Shanka: 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 for generating the model, Shanka for the generation/comparaison | + | -> **Ken** and **Ramona** for generating the model, **Biplob** and **Shankha** for the generation/comparaison |
| Line 51: | Line 52: | ||
| 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. | ||
| Use Re-Weighting method to avoid statistical error in the various generation | Use Re-Weighting method to avoid statistical error in the various generation | ||
| - | -> Ken and Olivier | + | -> **Ken** and **Olivier** |
2017/groups/np/efttherror.1498126553.txt.gz · Last modified: 2017/06/22 12:15 by olivier.mattelaer
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