CalcHEP

Variation of decay width with a parameter for 3-body decay

Asked by Basabendu

Dear CalcHEP team,

I have a decay process with three particles in the final state. I would like to see the variation of the decay width with the any parameter of the model concerned. Could you kindly suggest if that is possible at all.

Thank you.

Question information

Language:
English Edit question
Status:
Solved
For:
CalcHEP Edit question
Assignee:
No assignee Edit question
Solved by:
Alexander Belyaev
Solved:
Last query:
Last reply:
Revision history for this message
Alexander Belyaev (alexander.belyaev) said : 		#1

Hello Basabendu,

surely you can do this, for example, you can use ../bin/par_scan

script for this purpose. See manual.

Regards,

Sasha

On 09/05/2019 12:28, Basabendu wrote:
> Question #680602 on CalcHEP changed:
> https://answers.launchpad.net/calchep/+question/680602
>
> Summary changed to:
> Variation of decay width with a parameter for 3-body decay
>
> Description changed to:
> Dear CalcHEP team,
>
> I have a decay process with three particles in the final state. I would
> like to see the variation of the decay width with the mass of any
> parameter. Could you kindly suggest if that is possible at all.
>
> Thank you.
>
 --
______________________________________________________________________
Prof. Alexander S Belyaev (<email address hidden>)
https://www.hep.phys.soton.ac.uk/content/alexander-belyaev

School of Physics & Astronomy, University of Southampton
Office 5047, SO17 1BJ, TEL: +44 23805 98509, FAX: +44 23805 93910
.....................................................................
Particle Physics Department, Rutherford Appleton Laboratory
Didcot, OX11 0QX, TEL: +44 12354 45562, FAX: +44 12354 46733
.....................................................................
CERN, CH-1211 Geneva 23, Switzerland
Office 40/1-B20, Mailbox: E27910, TEL: +41 2276 71642
______________________________________________________________________

Revision history for this message
Best Alexander Belyaev (alexander.belyaev) said : 		#2

P.S.

Probably there is even easier way for you -- to use bacth file,

for example

#############################

Model:         SM(+hgg)
Process:   h->W+,2*x

Run parameter: Mh
Run begin:     120
Run step size: 5
Run n steps:   3
#########################

The only point is -- the units for the width will be not (fb) as it will
be written -- it will be (MeV)

-- we will improve this in the near future

Regards,

Sasha

On 09/05/2019 17:57, Alexander Belyaev wrote:
> Question #680602 on CalcHEP changed:
> https://answers.launchpad.net/calchep/+question/680602
>
> Status: Open => Answered
>
> Alexander Belyaev proposed the following answer:
> Hello Basabendu,
>
> surely you can do this, for example, you can use ../bin/par_scan
>
> script for this purpose. See manual.
>
> Regards,
>
> Sasha
>
>
> On 09/05/2019 12:28, Basabendu wrote:
>> Question #680602 on CalcHEP changed:
>> https://answers.launchpad.net/calchep/+question/680602
>>
>> Summary changed to:
>> Variation of decay width with a parameter for 3-body decay
>>
>> Description changed to:
>> Dear CalcHEP team,
>>
>> I have a decay process with three particles in the final state. I would
>> like to see the variation of the decay width with the mass of any
>> parameter. Could you kindly suggest if that is possible at all.
>>
>> Thank you.
>>

Revision history for this message
Basabendu (bb1988-1) said : 		#3

Thanks Alexander Belyaev, that solved my question.