Calc QCD Form Factors: Numerical Integration

In summary, The conversation discusses the calculation of form factors for hadronic and semileptonic B decays. The process involves complex numerical integration and there are various packages and data available for these calculations, including model calculations and lattice calculations. There is also a new method using holographic QCD, which is gaining popularity.
  • #1
plasmon
36
1
Dear friends, i was working on a hadronic decays. It appears that one has to calculate form factors. These form factors involve some very complex numerical integration. I would like to know if there are some packages available for calculating these form factors.
 
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  • #2
Hi,

which form factors more specifically ? If you need all possible of them, it's going to be difficult :smile: Some of them are fairly (or very) well known.
 
  • #3
I was working on semileptonic B decays.
 
  • #4
plasmon said:
I was working on semileptonic B decays.
There are some data on that, such as :
Measurements of the B to D* Form Factors Using the Decay B0 --> D* e nu_e

There are model calculations such as
Form Factors for Exclusive Semileptonic $B$--Decays
but this may be old. A paper giving references to B-FFs :
A Study of Exclusive Charmless Semileptonic B Decays and Extraction of |V_{ub}| at CLEO
Another, older :
Measurement of Exclusive $B \to X_u \ell \nu$ Decays with $D^{(*)} \ell \nu$ Decay Tagging
They also both point to lattice calculations.

If your goal is to make a new calculation, holographic is fancy lately :smile:
Electromagnetic Baryon Form Factors from Holographic QCD
(posted today)
 

1. What is Calc QCD Form Factors?

Calc QCD Form Factors refers to a numerical integration technique used in theoretical physics to calculate form factors, which are mathematical functions that relate the internal structure of particles to their external properties.

2. How does numerical integration work in Calc QCD Form Factors?

Numerical integration in Calc QCD Form Factors involves breaking down a complex mathematical equation into smaller, more manageable parts and then using numerical methods to approximate the solution. This allows for the calculation of form factors that cannot be solved analytically.

3. What is the significance of Calc QCD Form Factors in theoretical physics?

Calc QCD Form Factors plays a crucial role in understanding the strong interactions between subatomic particles, which are governed by the theory of quantum chromodynamics (QCD). By accurately calculating form factors, scientists can gain insights into the structure and behavior of particles at a fundamental level.

4. What are the limitations of numerical integration in Calc QCD Form Factors?

While numerical integration is a powerful tool, it is not without its limitations. The accuracy of the results depends on the specific numerical methods used and the precision of the input parameters. Additionally, numerical integration can be computationally intensive and time-consuming.

5. How is Calc QCD Form Factors used in practical applications?

Calc QCD Form Factors has a wide range of applications in theoretical physics, including particle physics, nuclear physics, and astrophysics. It is also used in experimental studies to verify theoretical predictions and in the development of new theoretical models.

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