Elementary Particle Physics

Why abandon Pythia7?

Before Pythia8, there is a experimental Pythia7. But it's abandoned altogether with ThePEG. Why would that happen?

07 July 2013 8,288 2 View

Particle spin?

1.Can someone summarise the concept of 'spin' in particle physics especially referring to what spin up and spin down actually refers to in terms of a particle's characteristics? I have read the...

05 May 2013 1,691 25 View

Do we believe that quarks are elementary, or they are composite?

If they are elementary (structureless), why does nature start constructing composite objects so late though there might be lots of possibilities to make it up earlier between Planck scale and...

01 May 2013 7,170 24 View

Are bare particles the true (but modest) heroes of microworld?

Running constants imply existence of bare particles in terms of which the other (dressed) particles are explained. What are those bare particles and how they have been discovered if never...

01 January 2013 9,242 0 View

Quark string structures as a means to explain gluonic bound states of protons and neutrons

Can you get strings of more than three quarks without any anti-quarks? I am just trying to find out if such structures have been observed as a way to possibly explain bound states of neutrons and...

19 December 2012 6,727 10 View

Muons

If a muon is just a massive electron that decays into an electron and associated neutrinos and anti-neutrinos, then where are the corresponding hadrons (protons/mesons) for these leptons?...

12 December 2012 7,582 8 View

Quark string structures as a means to explain gluonic bound states of protons and neutrons

Can you get strings of more than three quarks without any anti-quarks? I am just trying to find out if such structures have been observed as a way to possibly explain bound states of neutrons and...

12 December 2012 5,153 11 View

How does matter get its mass ?

By interaction with Higgs field?

09 August 2012 5,545 2 View

How does matter get its mass ?

By interaction with Higgs field?

08 August 2012 2,861 2 View

Is there any problem with a fermion singlet within the Standard Model?

By 'singlet' I mean SU(2) singlet, i.e. a charged fermion without its partner. Is there any theoretical drawback? As I think, it will have no coupling with the Higgs, since Higgs is not needed to...

28 February 2012 8,435 6 View

Is there any problem with a fermion singlet within the Standard Model?

By 'singlet' I mean SU(2) singlet, i.e. a charged fermion without its partner. Is there any theoretical drawback? As I think, it will have no coupling with the Higgs, since Higgs is not needed to...

02 February 2012 3,401 6 View

No title

01 January 1970 980 0 View

Can any amorphous material be made into single crystal or into a crystalline form?

Amorphous crystal

01 January 1970 883 26 View

Is proton tunneling a sudden process or non-sudden

I mean proton tunneling suddenly happens or gradually pass over a saddele point without using enough energy?

01 January 1970 6,165 6 View

Contradictions in GR? Say, a spring pulls a mass. Did anybody calculate the effect of inertial mass from GR theory?

Dear Sirs, Could anybody help to solve the following task? Let us have two different inertial masses, say different in 2 times. Point masses are good also. Each of them is pulled by a string...

01 January 1970 1,955 10 View

Are the primitive-properties the basic content/constituent of spacetime?

An interesting question would be whether the set of primitive properties could be (or are) the part of spacetime that entities occupy. If we suppose that any entity occupies a certain part of...

01 January 1970 452 3 View

Would we call gluons, photons and the like "exchange particles" if Feynman diagrams had not been invented?

According to common understanding the fundamental interactions of the standard model are mediated by the exchange of so-called gauge bosons (photon, gluon etc.). Now, the e.g. number of gauge...

01 January 1970 4,886 16 View

Why was the "Eightfold Way" of Gell-Mann the last stationary picture in the particle physics?

Why was it not possible to put into this picture where the triple Quarks were founded because of the constructed gravity points (2/3 to 1/3) [(spin(I3 = -1,-1/2,0,1/2,+1){Circle..."> Why was the "Eightfold Way" of Gell-Mann the last stationary picture in the particle physics? We use cookies to make interactions with our website easy and meaningful, to better understand the use of our services, and to tailor advertising. For further information, including about cookie settings, please read our Cookie Policy . By continuing to use this site, you consent to the use of cookies.

01 January 1970 4,996 3 View

Why sparticles other than LSP should decay eventually into a state that contains LSP?

Supermultiplets have same property except spin, then why sparticles eventually decay into only one particle, LSP?

01 January 1970 9,918 5 View

Why sparticles eventually should decay into LSP?

Supermultiplets have same property except their spins, then why each sparticles eventually decay into only one sparticle, LSP?

01 January 1970 8,350 0 View

How many of Unique Scholars believe that there is much to unveil beyond Higgs Boson?

I believe that Higgs boson is not a God Particle and there is much to unveil beyond it... I welcome all unique Scholars to respond with your valuable answers.. Thank you..

01 January 1970 2,963 3 View

Δ(1232) how to keep the conservation of angular momentum in decay reation

the spin of Δ(1232) is 3/2 ,but its decay product,like nuclear is 1/2,pion is 0, so the spin isn't consistent before and after decay reaction .Is some of the spin angular momentun translate to...

01 January 1970 2,265 3 View

Would we call gluons, photons and the like "exchange particles" if Feynman diagrams had not been invented?

According to common understanding the fundamental interactions of the standard model are mediated by the exchange of so-called gauge bosons (photon, gluon etc.). Now, the e.g. number of gauge...

01 January 1970 3,330 15 View

Why sparticles eventually should decay into LSP?

Supermultiplets have same property except their spins, then why each sparticles eventually decay into only one sparticle, LSP?

01 January 1970 2,982 1 View