Difference between revisions of "Master student Projects"

From LHCb Wiki
Jump to navigation Jump to search
Line 46: Line 46:
 
|}
 
|}
  
−
'''Supervisor''' : Mara Soares (staff), Emmy Gabriel (postdoc), Michele Veronesi (PhD)
+
'''Supervisor''' : Mara Soares (staff), Niels Tuning (staff), Emmy Gabriel (postdoc), Michele Veronesi (PhD)
  
 
'''Research Description:'''
 
'''Research Description:'''
Line 80: Line 80:
 
|}
 
|}
  
−
'''Supervisor''' : Mara Soares (staff), Emmy Gabriel (postdoc), Michele Veronesi (PhD)
+
'''Supervisor''' : Mara Soares (staff), Niels Tuning (staff), Emmy Gabriel (postdoc), Michele Veronesi (PhD)
  
 
'''Research Description:'''
 
'''Research Description:'''
Line 100: Line 100:
 
[2] [https://arxiv.org/abs/1407.1269 arXiv:1407.1269] J. van Tilburg and M. van Veghel,
 
[2] [https://arxiv.org/abs/1407.1269 arXiv:1407.1269] J. van Tilburg and M. van Veghel,
 
Status and prospects for CPT and Lorentz invariance violation searches in neutral meson mixing
 
Status and prospects for CPT and Lorentz invariance violation searches in neutral meson mixing
 +
 +
 +
{| border="1" cellpadding="2" cellspacing="0"
 +
|-
 +
! style="background:#3399ff;" | <font color=#ffffff> 3) BR(B0->D-pi+) and fd/fu with B+->D0pi+ </font>
 +
|}
 +
 +
'''Supervisor''' : Mara Soares (staff), Niels Tuning (staff), Emmy Gabriel (postdoc), Michele Veronesi (PhD)
 +
 +
'''Research Description:'''
 +
 +
The abundant decay B0->D-pi+ is often used as normalization channel, given its
 +
clean signal, and well-known branching fraction, as measured by the B-factories.
 +
However, this branching fraction can be determined more precisely, when comparing
 +
to the decay B+->D0pi+ , which has a twice better precision.
 +
 +
In addition, the production of B0 and B+ mesons is often assumed to be equal,
 +
based on isospin symmetry. The study of B+->D0pi+ and B0->D-pi+ allows for the
 +
first measurement of this ratio, fd/fu.
 +
 +
Our group at Nikhef has 10 years experience in the analysis of B->Dh decays.
 +
This analysis may lead to a publication on behalf of the LHCb collaboration.
 +
 +
''' Relevant information: '''
 +
 +
[1]  [https://cds.cern.ch/record/2636716/files/CERN-THESIS-2018-137.pdf CERN-THESIS-2018-137] J. Butter,
 +
Branching fraction measurement of B0->D+s pi?
 +
 +
 +
{| border="1" cellpadding="2" cellspacing="0"
 +
|-
 +
! style="background:#3399ff;" | <font color=#ffffff> 4) Isospin asymmetry in B->K(*)mumu decays </font>
 +
|}
 +
 +
'''Supervisor''' : Wouter Hulsbergen (staff), Maxime Schubiger (postdoc), Lex Greeven (PhD)
 +
 +
'''Research Description:'''
 +
 +
The family of B->Kmumu decays has drawn enormous attention in the last few years.
 +
Many anomalous measurements in these decays could be hints of the existence of new particles.
 +
A particular measurement is the ratio of decays with either up or down quarks, hence
 +
yielding a measurement of the isospin asymmetry.
 +
This is not expected to deviate from zero, but early measurements have shown small deviations.
 +
New data is avalaible which can yield a twice more precise determination of the isospin asymmetry.
 +
 +
''' Relevant information: '''
 +
 +
[1]  [https://arxiv.org/abs/1403.8044 arXiv:1403.8044] LHCb coll.,
 +
Differential branching fractions and isospin asymmetries of ->K(?)mu+mu? decays
 +
  
 
{| border="1" cellpadding="2" cellspacing="0"
 
{| border="1" cellpadding="2" cellspacing="0"
 
|-
 
|-
−
! style="background:#3399ff;" | <font color=#ffffff> 1) Searches for new pentaquarks </font>
+
! style="background:#3399ff;" | <font color=#ffffff> 4) Searches for new pentaquarks </font>
 
|}
 
|}
  
Line 121: Line 171:
 
{| border="1" cellpadding="2" cellspacing="0"
 
{| border="1" cellpadding="2" cellspacing="0"
 
|-
 
|-
−
! style="background:#3399ff;" | <font color=#ffffff> 9) Measurement of the relative efficiency of muons and electrons with J/psi->ll decays </font>
+
! style="background:#3399ff;" | <font color=#ffffff> 5) Measurement of the relative efficiency of muons and electrons with J/psi->ll decays </font>
 
|}
 
|}
  
Line 134: Line 184:
 
{| border="1" cellpadding="2" cellspacing="0"
 
{| border="1" cellpadding="2" cellspacing="0"
 
|-
 
|-
−
! style="background:#3399ff;" | <font color=#ffffff> 10) Very rare decays of B mesons</font>
+
! style="background:#3399ff;" | <font color=#ffffff> 6) Very rare decays of B mesons</font>
 
|}
 
|}
  
Line 146: Line 196:
 
{| border="1" cellpadding="2" cellspacing="0"
 
{| border="1" cellpadding="2" cellspacing="0"
 
|-
 
|-
−
! style="background:#3399ff;" | <font color=#ffffff> 11) Measurement of Central Exclusive Production Rates of Chi_c using converted photons in LHCb. </font>
+
! style="background:#3399ff;" | <font color=#ffffff> 7) Measurement of Central Exclusive Production Rates of Chi_c using converted photons in LHCb. </font>
 
|}
 
|}
  
Line 156: Line 206:
 
{| border="1" cellpadding="2" cellspacing="0"
 
{| border="1" cellpadding="2" cellspacing="0"
 
|-
 
|-
−
! style="background:#3399ff;" | <font color=#ffffff> 12) Optimization studies for Vertex detector at the High Lumi LHCb </font>
+
! style="background:#3399ff;" | <font color=#ffffff> 8) Optimization studies for Vertex detector at the High Lumi LHCb </font>
 
|}
 
|}
  
Line 167: Line 217:
 
{| border="1" cellpadding="2" cellspacing="0"
 
{| border="1" cellpadding="2" cellspacing="0"
 
|-
 
|-
−
! style="background:#3399ff;" | <font color=#ffffff> 13) Measurement of charge multiplication in heavily irradiated sensors </font>
+
! style="background:#3399ff;" | <font color=#ffffff> 9) Measurement of charge multiplication in heavily irradiated sensors </font>
 
|}
 
|}
  

Revision as of 17:08, 14 April 2020

Retrieved from "https://wiki.nikhef.nl/lhcb/index.php?title=Master_student_Projects&oldid=1736"