[Blackmax] FW: Running BlackMax at 8 TeV failed

[Shaoqi Hou]

Hi Marc,

How to discard the event? Thank you very much!

Best Wishes

Shaoqi


On Tue, Mar 3, 2015 at 12:04 PM, Marc Cano Bret <marc.bret.87 at gmail.com>
wrote:

> Hi Shaoqi,
>
> Discussing with my supervisor, It could well be that its a common problem
> as sometimes Pythia can refuse to hadronize an event. Ideally we should
> just discard that event rather than making the whole code stop when it
> happens.
>
> Thanks,
>
> Marc
>
> On 3 March 2015 at 17:52, Shaoqi Hou <shou at crimson.ua.edu> wrote:
>
>> Hi Mr. Marc Cano Bret,
>>
>> Thanks for your help! I compiled BlackMax in the all mode. And I use
>> older version of PYTHIA. pythia-6.4.28.
>>
>> Best Wishes
>>
>> Shaoqi
>>
>>
>> On Tue, Mar 3, 2015 at 8:55 AM, Marc Cano Bret <marc.bret.87 at gmail.com>
>> wrote:
>>
>>> Dear Shaoqi,
>>>
>>> I have been forwarded the email discussion you had with Prof. Issever on
>>> the BlackMax issue you have encountered. Could you please tell me which
>>> option are you using to compile BlackMax (BlackMaxOnly, BlackMax or all)
>>> and the Pythia version you are using? Using the same parameter.txt file you
>>> sent Prof. Issever I can generate events just fine by compiling in the
>>> BlackMax mode, so I guess the problem might be with Pythia if you are using
>>> the all compilation mode.
>>>
>>> Best,
>>>
>>> Marc
>>>
>>> On 3 March 2015 at 14:50, Marc Cano Bret <marc.bret.87 at gmail.com> wrote:
>>>
>>>> Hi Cigdem,
>>>>
>>>> Looking through the output file and the parameter.txt I don't see
>>>> anything striking. I have run BlackMax myself using his file and don't get
>>>> any errors. I first ran with the CTEQ PDF and then with the PDF he is using
>>>> (21000, which is MSTW2008). It is then quite possible that this is a Pythia
>>>> issue. I normally compile BlackMax with the BlackMaxOnly or BlackMax choice
>>>> so I haven't encountered this problem. The Pythia version I have in my
>>>> computer (8.175) is very recent and BlackMax doesnt compile with that one.
>>>> We should ask which option he is using to compile BlackMax and if he is
>>>> using the Pythia version mentioned in the README file. I will drop him an
>>>> email.
>>>>
>>>> Best,
>>>>
>>>> Marc
>>>>
>>>> On 3 March 2015 at 14:18, Cigdem Issever <c.Issever1 at physics.ox.ac.uk>
>>>> wrote:
>>>>
>>>>>  and the outputs
>>>>>
>>>>>
>>>>> ---------------------------------------------------------------------
>>>>> Cigdem Issever <https://www2.physics.ox.ac.uk/contacts/people/issever>
>>>>>
>>>>> University of Oxford                    @ CERN office 104/1-C14
>>>>> Skype-id: cigdem.issever            Oxford Tel: +44-1865-273337
>>>>>
>>>>> ---------------------------------------------------------------------
>>>>>      ------------------------------
>>>>> *From:* Shaoqi Hou [shou at crimson.ua.edu]
>>>>> *Sent:* 25 February 2015 15:57
>>>>> *To:* Cigdem Issever
>>>>> *Cc:* Email the developers
>>>>> *Subject:* Re: [Blackmax] Running BlackMax at 8 TeV failed
>>>>>
>>>>>    Hi Prof. Issever,
>>>>>
>>>>> I ran BlackMax with the newest parameter.txt sent to you. BlackMax
>>>>> stalled after about 2 min, 1481 events simulated. No more events were
>>>>> simulated further. Please download the two attachments. Thank you very much!
>>>>>
>>>>> Best Wishes
>>>>>
>>>>> Shaoqi
>>>>>
>>>>> ​
>>>>>   BlackMaxLHArecord.lhe
>>>>> <https://docs.google.com/a/crimson.ua.edu/file/d/0B4MDh9xjGUXvanQ3bEVEQWFXLUU/edit?usp=drive_web>
>>>>> ​​
>>>>>   output.txt
>>>>> <https://docs.google.com/a/crimson.ua.edu/file/d/0B4MDh9xjGUXvbHpVNFhQWGxVN0E/edit?usp=drive_web>
>>>>> ​
>>>>>
>>>>>
>>>>> On Wed, Feb 25, 2015 at 8:40 AM, Cigdem Issever <
>>>>> c.Issever1 at physics.ox.ac.uk> wrote:
>>>>>
>>>>>>  Can you also send me any output BlackMax produce when you run it
>>>>>> with the 8TeV setup?
>>>>>>
>>>>>> I will try to run BlackMax myself with your settings and see if I can
>>>>>> reproduce it.
>>>>>>
>>>>>> Cigdem
>>>>>>
>>>>>>
>>>>>> ---------------------------------------------------------------------
>>>>>> Cigdem Issever
>>>>>> <https://www2.physics.ox.ac.uk/contacts/people/issever>
>>>>>>
>>>>>> University of Oxford                    @ CERN office 104/1-C14
>>>>>> Skype-id: cigdem.issever            Oxford Tel: +44-1865-273337
>>>>>>
>>>>>> ---------------------------------------------------------------------
>>>>>>      ------------------------------
>>>>>> *From:* Cigdem Issever
>>>>>> *Sent:* 24 February 2015 17:03
>>>>>>
>>>>>> *To:* shou at crimson.ua.edu; Email the developers
>>>>>> *Subject:* RE: [Blackmax] Running BlackMax at 8 TeV failed
>>>>>>
>>>>>>    I am not sure what BlackMax does if you set the maximum mass to a
>>>>>> higher value than the centre of mass energy.
>>>>>>
>>>>>> Can you try to run blackmax for the COM = 8 TeV with a maximum mass
>>>>>> value of 8TeV? and see if you still have this problem?
>>>>>>
>>>>>> Cigdem
>>>>>>
>>>>>>
>>>>>> ---------------------------------------------------------------------
>>>>>> Cigdem Issever
>>>>>> <https://www2.physics.ox.ac.uk/contacts/people/issever>
>>>>>>
>>>>>> University of Oxford                    @ CERN office 104/1-C14
>>>>>> Skype-id: cigdem.issever            Oxford Tel: +44-1865-273337
>>>>>>
>>>>>> ---------------------------------------------------------------------
>>>>>>      ------------------------------
>>>>>> *From:* Cigdem Issever
>>>>>> *Sent:* 24 February 2015 17:01
>>>>>> *To:* shou at crimson.ua.edu; Email the developers
>>>>>> *Subject:* RE: [Blackmax] Running BlackMax at 8 TeV failed
>>>>>>
>>>>>>   Dear Shaoqi,
>>>>>>
>>>>>> the parameter file you have send is this the the file which causes
>>>>>> the problems? I see that the centre of mass energy in this file is set to
>>>>>> 9TeV. Can you send me the file which causes the problem? Or are you just
>>>>>> changing the centre of mass energy from 9 to 8 TeV in this file and you end
>>>>>> up with problems?
>>>>>>
>>>>>> I just want to make sure that there is not a typo in the parameter
>>>>>> file where you set the CoM to 8 TeV.
>>>>>>
>>>>>> Best
>>>>>>   Cigdem
>>>>>>
>>>>>>
>>>>>> ---------------------------------------------------------------------
>>>>>> Cigdem Issever
>>>>>> <https://www2.physics.ox.ac.uk/contacts/people/issever>
>>>>>>
>>>>>> University of Oxford                    @ CERN office 104/1-C14
>>>>>> Skype-id: cigdem.issever            Oxford Tel: +44-1865-273337
>>>>>>
>>>>>> ---------------------------------------------------------------------
>>>>>>      ------------------------------
>>>>>> *From:* blackmax-bounces at projects.hepforge.org [
>>>>>> blackmax-bounces at projects.hepforge.org] on behalf of Shaoqi Hou [
>>>>>> shou at crimson.ua.edu]
>>>>>> *Sent:* 24 February 2015 16:45
>>>>>> *To:* blackmax at projects.hepforge.org
>>>>>> *Subject:* [Blackmax] Running BlackMax at 8 TeV failed
>>>>>>
>>>>>>    To whom it may concern,
>>>>>>
>>>>>>  I am a graduate student at the University of Alabama. Recently, I
>>>>>> tried to run BlackMax to reproduce the results of Fig. 1 published in the
>>>>>> paper JHEP 07 (2013) 178. But unfortunately, BlackMax got stuck when the
>>>>>> center of mass energy was set to 8 TeV. If the center of mass energy is 14
>>>>>> TeV or 9 TeV, BlackMax runs successfully. The attachment is the parameter
>>>>>> file. Please look into this problem. Thank you!
>>>>>>
>>>>>>  Best wishes
>>>>>>
>>>>>>  Shaoqi Hou
>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>
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