CERN: Leptoquarks, the Higgs boson and the muon’s magnetism
Posted: Fri Jun 18, 2021 6:46 pm
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Would this be another minor addition to the Standard Model or open the door to something significant?notFritzArgelander wrote: ↑Fri Jun 18, 2021 6:46 pm https://home.cern/news/news/physics/lep ... yrGfsI_V3w
Interesting question. It caused me to think about calibrating SM extensions.GCoyote wrote: ↑Sat Jun 19, 2021 7:45 pmWould this be another minor addition to the Standard Model or open the door to something significant?notFritzArgelander wrote: ↑Fri Jun 18, 2021 6:46 pm https://home.cern/news/news/physics/lep ... yrGfsI_V3w
"Strangely, there are no right-handed W bosons in nature."GCoyote wrote: ↑Sun Jun 20, 2021 4:27 pm Yeah, it is definitely messy. Did you see this a few weeks ago?
https://www.quantamagazine.org/a-new-ma ... -20201022/
Quarks are color triplets (3 colors) with baryon and without lepton number.turboscrew wrote: ↑Sun Jun 20, 2021 3:39 pm "Leptoquarks are color-triplet bosons that carry both lepton and baryon numbers."
Weird things, indeed.
Kind of brought the light wave/particle duality in mind. But colour-triplet?
Weak does form force fields but the range over which the force is appreciable is quite short. Because the W and Z bosons which carry the force are so massive the range is very short. Here's a link to the Yukawa potential which details how this works. https://en.wikipedia.org/wiki/Yukawa_potentialturboscrew wrote: ↑Sun Jun 20, 2021 4:59 pm"Strangely, there are no right-handed W bosons in nature."GCoyote wrote: ↑Sun Jun 20, 2021 4:27 pm Yeah, it is definitely messy. Did you see this a few weeks ago?
https://www.quantamagazine.org/a-new-ma ... -20201022/
Had to bookmark the page.
I never really got a grip of weak interaction. The other interactions form "force fields". I think weak does not?
That article slipped past me. Thanks!GCoyote wrote: ↑Sun Jun 20, 2021 4:27 pm Yeah, it is definitely messy. Did you see this a few weeks ago?
https://www.quantamagazine.org/a-new-ma ... -20201022/
Ah, the "triplet" means that. I thought it meant that one leptoquark could have three colours, but it can have one of the three possible colours.notFritzArgelander wrote: ↑Sun Jun 20, 2021 7:40 pmQuarks are color triplets (3 colors) with baryon and without lepton number.turboscrew wrote: ↑Sun Jun 20, 2021 3:39 pm "Leptoquarks are color-triplet bosons that carry both lepton and baryon numbers."
Weird things, indeed.
Kind of brought the light wave/particle duality in mind. But colour-triplet?
Leptons are color singlets (0 colors, but technically a color singlet state) without baryon and with lepton number.
Leptoquarks are color triplets with both baryon and lepton number.
Does that help, I hope?
It looks like Yukawa-potential is more like an abstract construct that fits, at least, to electromagnetic interaction and weak interaction, but I still have no clue, what's the "charge" in weak interaction. I've searched that around the internet before, but I haven't seen much else but that weak interaction "affects some decays". I guess the "charge" with Yukawa-potential might, together, bring _some_ light to this?notFritzArgelander wrote: ↑Sun Jun 20, 2021 7:46 pmWeak does form force fields but the range over which the force is appreciable is quite short. Because the W and Z bosons which carry the force are so massive the range is very short. Here's a link to the Yukawa potential which details how this works. https://en.wikipedia.org/wiki/Yukawa_potentialturboscrew wrote: ↑Sun Jun 20, 2021 4:59 pm"Strangely, there are no right-handed W bosons in nature."GCoyote wrote: ↑Sun Jun 20, 2021 4:27 pm Yeah, it is definitely messy. Did you see this a few weeks ago?
https://www.quantamagazine.org/a-new-ma ... -20201022/
Had to bookmark the page.
I never really got a grip of weak interaction. The other interactions form "force fields". I think weak does not?
Ah, but the the weak interaction DOES involve weak charge that is analogous to electrical charge. Here's how it's calculated in the Standard Model: https://en.wikipedia.org/wiki/Weak_chargeturboscrew wrote: ↑Sun Jun 20, 2021 9:17 pmIt looks like Yukawa-potential is more like an abstract construct that fits, at least, to electromagnetic interaction and weak interaction, but I still have no clue, what's the "charge" in weak interaction. I've searched that around the internet before, but I haven't seen much else but that weak interaction "affects some decays". I guess the "charge" with Yukawa-potential might, together, bring _some_ light to this?notFritzArgelander wrote: ↑Sun Jun 20, 2021 7:46 pmWeak does form force fields but the range over which the force is appreciable is quite short. Because the W and Z bosons which carry the force are so massive the range is very short. Here's a link to the Yukawa potential which details how this works. https://en.wikipedia.org/wiki/Yukawa_potentialturboscrew wrote: ↑Sun Jun 20, 2021 4:59 pm
"Strangely, there are no right-handed W bosons in nature."
Had to bookmark the page.
I never really got a grip of weak interaction. The other interactions form "force fields". I think weak does not?
So I can think of a kind of "vector charge" where one component is electric charge and the other part is weak charge?notFritzArgelander wrote: ↑Sun Jun 20, 2021 9:54 pmAh, but the the weak interaction DOES involve weak charge that is analogous to electrical charge. Here's how it's calculated in the Standard Model: https://en.wikipedia.org/wiki/Weak_chargeturboscrew wrote: ↑Sun Jun 20, 2021 9:17 pmIt looks like Yukawa-potential is more like an abstract construct that fits, at least, to electromagnetic interaction and weak interaction, but I still have no clue, what's the "charge" in weak interaction. I've searched that around the internet before, but I haven't seen much else but that weak interaction "affects some decays". I guess the "charge" with Yukawa-potential might, together, bring _some_ light to this?notFritzArgelander wrote: ↑Sun Jun 20, 2021 7:46 pm
Weak does form force fields but the range over which the force is appreciable is quite short. Because the W and Z bosons which carry the force are so massive the range is very short. Here's a link to the Yukawa potential which details how this works. https://en.wikipedia.org/wiki/Yukawa_potential
The vector bosons that "carry" the force are often uncharged, the photon in the EM interaction, the gluon in the strong interaction. The weak interaction has two vector bosons, the W and Z. The Z is electrically uncharged and the W is electrically charged. So the former is responsible for "neutral current" weak interactions and the W does "charged current" weak interactions.
https://en.wikipedia.org/wiki/Charged_current
https://en.wikipedia.org/wiki/Neutral_current
Isospin is a good place to start historically. It led to thinking about charged and neutral currents in the weak interaction.turboscrew wrote: ↑Mon Jun 21, 2021 3:36 amSo I can think of a kind of "vector charge" where one component is electric charge and the other part is weak charge?notFritzArgelander wrote: ↑Sun Jun 20, 2021 9:54 pmAh, but the the weak interaction DOES involve weak charge that is analogous to electrical charge. Here's how it's calculated in the Standard Model: https://en.wikipedia.org/wiki/Weak_chargeturboscrew wrote: ↑Sun Jun 20, 2021 9:17 pm
It looks like Yukawa-potential is more like an abstract construct that fits, at least, to electromagnetic interaction and weak interaction, but I still have no clue, what's the "charge" in weak interaction. I've searched that around the internet before, but I haven't seen much else but that weak interaction "affects some decays". I guess the "charge" with Yukawa-potential might, together, bring _some_ light to this?
The vector bosons that "carry" the force are often uncharged, the photon in the EM interaction, the gluon in the strong interaction. The weak interaction has two vector bosons, the W and Z. The Z is electrically uncharged and the W is electrically charged. So the former is responsible for "neutral current" weak interactions and the W does "charged current" weak interactions.
https://en.wikipedia.org/wiki/Charged_current
https://en.wikipedia.org/wiki/Neutral_current
Maybe I should read about isospin first?