Danny van Dyk
@dannyvandyk.bsky.social
🧑🔬 Asst. Prof. IPPP Durham (he/him)
👨🍳 experimental cook by conviction
💻 EOS lead developer
💉 x5
👨🍳 experimental cook by conviction
💻 EOS lead developer
💉 x5
That's an interesting paper, going beyond what Sophie and Dave did with Camila in 2022 (application to the SMEFT).
July 28, 2025 at 12:50 PM
That's an interesting paper, going beyond what Sophie and Dave did with Camila in 2022 (application to the SMEFT).
There is still a chance that I win the lottery and retire early! 😁
March 15, 2025 at 9:03 PM
There is still a chance that I win the lottery and retire early! 😁
Cheers Thorsten!
February 26, 2025 at 5:07 PM
Cheers Thorsten!
Oh man. Are there slides? Is there a recording?
February 26, 2025 at 11:17 AM
Oh man. Are there slides? Is there a recording?
1. Do you think it is correct to say SpaceX competes with NASA? NASA is a non-profit organisation.
2. NASA's mission has always used expertise from aerospatial industry. Fletcher co-founded (what became) Aerojet General Corp; Myers worked for Rockwell; Griffin was president of Orbital Sciences.
2. NASA's mission has always used expertise from aerospatial industry. Fletcher co-founded (what became) Aerojet General Corp; Myers worked for Rockwell; Griffin was president of Orbital Sciences.
December 4, 2024 at 8:37 PM
1. Do you think it is correct to say SpaceX competes with NASA? NASA is a non-profit organisation.
2. NASA's mission has always used expertise from aerospatial industry. Fletcher co-founded (what became) Aerojet General Corp; Myers worked for Rockwell; Griffin was president of Orbital Sciences.
2. NASA's mission has always used expertise from aerospatial industry. Fletcher co-founded (what became) Aerojet General Corp; Myers worked for Rockwell; Griffin was president of Orbital Sciences.
As I said, do not know of this person in sufficient detail to form an opinion either way. What you write seems quite relevant to the job, though!
December 4, 2024 at 8:14 PM
As I said, do not know of this person in sufficient detail to form an opinion either way. What you write seems quite relevant to the job, though!
Cannot say if he's an excellent choice, due to lack of information. But this claim seems very off. Isaacman purchased at least two spaceflights from SpaceX. If we go by that, is no former NASA administrator in a pickle who had purchased from SpaceX before? That's a very weird argument...
December 4, 2024 at 8:00 PM
Cannot say if he's an excellent choice, due to lack of information. But this claim seems very off. Isaacman purchased at least two spaceflights from SpaceX. If we go by that, is no former NASA administrator in a pickle who had purchased from SpaceX before? That's a very weird argument...
~90%, yes. In the summer of 2022, due to draughts, there was not enough cooling water available to run the nuclear power stations. The ability to use solar power as an alternative in such a situation is not a bad one, isn't it?
December 4, 2024 at 7:55 PM
~90%, yes. In the summer of 2022, due to draughts, there was not enough cooling water available to run the nuclear power stations. The ability to use solar power as an alternative in such a situation is not a bad one, isn't it?
Thank you Freya!
Hah, fun retro-arXiv link indeed. I had not yet seen an arXiv entry that cannot generate a PDF file anymore!
Will have a look at the PRD paper on Monday 😀
Hah, fun retro-arXiv link indeed. I had not yet seen an arXiv entry that cannot generate a PDF file anymore!
Will have a look at the PRD paper on Monday 😀
November 23, 2024 at 11:26 PM
Thank you Freya!
Hah, fun retro-arXiv link indeed. I had not yet seen an arXiv entry that cannot generate a PDF file anymore!
Will have a look at the PRD paper on Monday 😀
Hah, fun retro-arXiv link indeed. I had not yet seen an arXiv entry that cannot generate a PDF file anymore!
Will have a look at the PRD paper on Monday 😀
Is there a theoretical justification for searching for a top (jet) + single gluon (jet)? That seems a bit weird, since both top and gluon are colour-charged but in different representations.
November 23, 2024 at 9:18 PM
Is there a theoretical justification for searching for a top (jet) + single gluon (jet)? That seems a bit weird, since both top and gluon are colour-charged but in different representations.
A symlink is a "special" file that contains the path to the target file. When you move the target, the symlink breaks. When you move a symlink with a relative target, the symlink breaks.
A hardlink is a second (third, ...) name of a target. When you move/delete the target, the hardlink still works.
A hardlink is a second (third, ...) name of a target. When you move/delete the target, the hardlink still works.
November 22, 2024 at 10:48 AM
A symlink is a "special" file that contains the path to the target file. When you move the target, the symlink breaks. When you move a symlink with a relative target, the symlink breaks.
A hardlink is a second (third, ...) name of a target. When you move/delete the target, the hardlink still works.
A hardlink is a second (third, ...) name of a target. When you move/delete the target, the hardlink still works.
OK, attempting to combine this very naively (assuming that the systematical and statistical uncertainties can be combined to a statistically meaningful uncertainty as sums of squares), I get:
τ(B₀) = 1.5112 ± 0.0027 with a p value of ~25% (χ² = 12.4715 for 10 d.o.f.).
τ(B₀) = 1.5112 ± 0.0027 with a p value of ~25% (χ² = 12.4715 for 10 d.o.f.).
November 18, 2024 at 3:20 PM
OK, attempting to combine this very naively (assuming that the systematical and statistical uncertainties can be combined to a statistically meaningful uncertainty as sums of squares), I get:
τ(B₀) = 1.5112 ± 0.0027 with a p value of ~25% (χ² = 12.4715 for 10 d.o.f.).
τ(B₀) = 1.5112 ± 0.0027 with a p value of ~25% (χ² = 12.4715 for 10 d.o.f.).
Is there a p value for the combination?
November 18, 2024 at 2:04 PM
Is there a p value for the combination?
We plan to expand this type of analysis to other measurements. So we already contacted
Alexander Lenz and his team of #subatomicheroes in Siegen, to see if we can join efforts!
Alexander Lenz and his team of #subatomicheroes in Siegen, to see if we can join efforts!
November 17, 2024 at 5:06 PM
We plan to expand this type of analysis to other measurements. So we already contacted
Alexander Lenz and his team of #subatomicheroes in Siegen, to see if we can join efforts!
Alexander Lenz and his team of #subatomicheroes in Siegen, to see if we can join efforts!
The blue results are closer to the SM than the orange ones, but neither truly includes the SM point. The green ellipses arise from the usage of the inclusive nonleptonic decay width. As you can see, for some WET parameters the inclusive measurements are already very constraining!
November 17, 2024 at 5:06 PM
The blue results are closer to the SM than the orange ones, but neither truly includes the SM point. The green ellipses arise from the usage of the inclusive nonleptonic decay width. As you can see, for some WET parameters the inclusive measurements are already very constraining!
The 2-particle results were already known, and he finds agreement with the literature. But the full set of 3-particle results for arbitrary WET contributions is new!
November 17, 2024 at 5:05 PM
The 2-particle results were already known, and he finds agreement with the literature. But the full set of 3-particle results for arbitrary WET contributions is new!
The 2-particle results were already known, and he finds agreement with the literature. But the full set of 3-particle results for arbitrary WET contributions is new!
November 17, 2024 at 5:05 PM
The 2-particle results were already known, and he finds agreement with the literature. But the full set of 3-particle results for arbitrary WET contributions is new!
This does not change the overall picture, and the tensions persist. He expanded his calculation to also cover all possible contributions by heavy beyond the Standard Model (SM) physics (i.e., in the so-called Weak Effective Theory = WET).
November 17, 2024 at 5:04 PM
This does not change the overall picture, and the tensions persist. He expanded his calculation to also cover all possible contributions by heavy beyond the Standard Model (SM) physics (i.e., in the so-called Weak Effective Theory = WET).
As part of his PhD thesis. Stefan investigated this tension from two points of view. First, he repeated the calculation to NLO αₛ for 2-particle and LO for the 3-particle terms. He finds full agreement with the literature for the former, and a missing prefactor for the latter.
November 17, 2024 at 5:04 PM
As part of his PhD thesis. Stefan investigated this tension from two points of view. First, he repeated the calculation to NLO αₛ for 2-particle and LO for the 3-particle terms. He finds full agreement with the literature for the former, and a missing prefactor for the latter.