Peripheral Collisions

Fast moving highly-charged ions carry strong electromagnetic fields that act as a beam of photons. In collisions at large impact parameters (b>R1+R2), hadronic interactions are not possible, and the ions interact through photon-ion and photon-photon collisions known as ultra-peripheral collisions (UPCs).  Ultra-peripheral hadron-hadron collisions will provide unique opportunities for studying electromagnetic processes. Ultra-relativistic heavy-ion interactions have been used to study nuclear photo excitation (e.g., to a Giant Dipole Resonance) and photoproduction of hadrons.

 

                                                                                                  

Hadron colliders like the Relativistic Heavy Ion Collider (RHIC), the Tevatron, and the Large Hadron Collider (LHC) produce photonuclear and two-photon interactions at luminosities and energies beyond that accessible elsewhere.

 

 

Very Forward Detector

Creation of pico-dst

Ultra-peripheral Collisions

TimeTalkPresenter
09:00Central Production Double Diffraction Dissociation process in Run 12 in pp ( 00:15 ) 1 fileLeszek Adamczyk (Cracow)
09:15New Analysis ( 00:30 ) 1 fileSpencer Klein (LBNL)
09:4562 GeV paper update ( 00:15 ) 0 filesJanet Seger (Creighton)
10:00Embedding and tracking status update ( 00:15 ) 1 fileRamiro Debbe (BNL)
10:15Creation of pico-dst ( 00:15 ) 2 filesDilan (Creighton)
10:30Coffee Break ( 00:30 ) 0 files (Bldg 50)
11:00Rho diffraction analysis ( 00:30 ) 1 fileRamiro Debbe (BNL)
11:30J/psi and rho analysis ( 00:15 ) 1 fileJanet Seger (Creighton)
11:45e+e- analysis (particle ID) ( 00:15 ) 1 fileJanet Seger (Creighton)

Ultra-peripheral Collisions

TimeTalkPresenter
09:30Update from Donika ( 00:20 ) 1 fileDonika Plyku (ODU)
09:50Update from Ivan ( 00:30 ) 1 fileIvan Koralt (ODU)
11:00A_N results ( 00:40 ) 1 fileKin Yip (BNL)
11:40Run 12 plan and goals ( 00:20 ) 1 fileStephen Bueltmann (ODU)
14:00Discussion of run 12 ( 00:30 ) 0 filesAll (All)

Crossing angle vs offset at the RP

Speaker : Wlodek


Talk time : 10:40, Duration : 00:20

Results with latest alignment and crossing angle

Speaker : Kin


Talk time : 10:00, Duration : 00:40

Crossing angle from y vs x

Speaker : Wlodek


Talk time : 09:00, Duration : 00:20

Crossing angle

Speaker : Wlodek


Talk time : 10:00, Duration : 00:30

pp2pp analysis

2011-12-21 09:00
2011-12-21 11:00
America/New York
Wednesday, 21 December 2011
1-189 Physics, at 14:00 (GMT), duration : 02:00
TimeTalkPresenter
10:30Effects of changes of polarizations and various parameters on AN/r5 ( 00:20 ) 1 fileKin Yip

pp2pp analysis

2011-12-28 09:00
2011-12-28 11:00
America/New York
Wednesday, 28 December 2011
1-189 Physics, at 14:00 (GMT), duration : 02:00
TimeTalkPresenter
10:00Totem ( 00:30 ) 1 fileIgor
10:30paper ( 00:30 ) 3 files
11:00Beam Divergence ( 00:20 ) 1 fileKin Yip

pp2pp analysis

2012-01-04 09:00
2012-01-04 11:00
America/New York
Wednesday, 4 January 2012
1-189 Physics, at 14:00 (GMT), duration : 02:00

pp2pp analysis

2011-11-02 10:00
2011-11-02 12:00
America/New York
Wednesday, 2 November 2011
1-189 Physics, at 14:00 (GMT), duration : 02:00
TimeTalkPresenter
10:00A_N and r5 using the latest alignment and cross-angle corrections ( 00:20 ) 1 fileKin Yip

pp2pp analysis

2011-11-09 09:00
2011-11-09 11:00
America/New York
Wednesday, 9 November 2011
1-189 Physics, at 14:00 (GMT), duration : 02:00
TimeTalkPresenter
10:00Using phi and -t errors on the fits ( 00:20 ) 1 fileKin Yip
10:20Comparing r5 ( 00:20 ) 1 fileJHL

pp2pp analysis

2011-11-16 09:00
2011-11-16 11:00
America/New York
Wednesday, 16 November 2011
1-189 Physics, at 14:00 (GMT), duration : 02:00

pp2pp analysis

2011-11-23 09:00
2011-11-23 11:00
America/New York
Wednesday, 23 November 2011
1-189 Physics, at 14:00 (GMT), duration : 02:00

pp2pp analysis

2011-11-30 09:00
2011-11-30 11:00
America/New York
Wednesday, 30 November 2011
1-189 Physics, at 14:00 (GMT), duration : 02:00
TimeTalkPresenter
10:00SSA in single diffractive dissociation ( 00:30 ) 0 filesDave Underwood
10:30Finalizing geometry ( 00:20 ) 0 filesIgor and Wlodek
10:50Run 12 ( 00:20 ) 0 files

pp2pp analysis

2011-12-07 09:00
2011-12-07 11:00
America/New York
Wednesday, 7 December 2011
1-189 Physics, at 14:00 (GMT), duration : 02:00
TimeTalkPresenter
10:00Diffraction Dissociation Issues, Physics ( 00:30 ) 1 fileDave Underwood
10:30Final geometry ( 00:30 ) 0 filesIgor and Wlodek
11:00Run 12 ( 00:20 ) 0 files
11:20Central Production in 2009 data ( 00:20 ) 1 fileLeszek Adamczyk (Cracow)

pp2pp analysis

2011-12-14 09:00
2011-12-14 11:00
America/New York
Wednesday, 14 December 2011
1-189 Physics, at 14:00 (GMT), duration : 02:00
TimeTalkPresenter
10:00Results with the final geometry ( 00:30 ) 1 fileKin
10:30Paper ( 00:30 ) 2 filesJH

pp2pp analysis

2011-10-19 10:00
2011-10-19 12:00
America/New York
Wednesday, 19 October 2011
1-189 Physics, at 14:00 (GMT), duration : 02:00
TimeTalkPresenter
09:00Crossing angle from y vs x ( 00:20 ) 1 fileWlodek
09:20follow-up on position vs angle at RP's plots ( 00:20 ) 1 filePhil Pile

pp2pp analysis

2011-10-26 10:00
2011-10-26 12:00
America/New York
Wednesday, 26 October 2011
1-189 Physics, at 14:00 (GMT), duration : 02:00

Title: pp2pp

Description: pp2pp analysis meeting
Community: STAR
Password: elasticpp

Meeting Access Information:
- Meeting URL

http://evo.caltech.edu/evoNext/koala.jnlp?meeting=eseieIvnveauaaIua8Is

- Password: elasticpp
- Phone Bridge
ID: 11 0521
Password: 5158

TimeTalkPresenter
10:00Results with latest alignment and crossing angle ( 00:40 ) 1 fileKin
10:40Crossing angle vs offset at the RP ( 00:20 ) 1 fileWlodek
11:00Naive alignment considerations ( 00:05 ) 1 fileIgor Alekseev (ITEP)