scholarly journals Hunting for states in the recent LHCb di- J/ψ invariant mass spectrum

2021 ◽  
Vol 104 (3) ◽  
Author(s):  
Ze-Rui Liang ◽  
Xiao-Yi Wu ◽  
De-Liang Yao
Keyword(s):  
Mass Spectrum ◽  
Invariant Mass ◽  
Invariant Mass Spectrum

STUDY OF THE DIJET INVARIANT MASS IN W + JETS EVENTS BY THE DØ COLLABORATION

2012 ◽  
Vol 27 (01) ◽  
pp. 1230002
Author(s):  
JADRANKA SEKARIC
Keyword(s):  
Mass Spectrum ◽  
Invariant Mass ◽  
Experimental Verification ◽  
Hadron Collider ◽  
Mass Range ◽  
Invariant Mass Spectrum ◽  
Dijet Production ◽  
Dijet Mass ◽  
Two Jets ◽  
Recent Claim

The recent claim by the CDF Collaboration of a possible anomalous dijet resonance in their data required experimental verification from other hadron collider experiments. We present a study of the dijet invariant mass spectrum in events with two jets produced in association with a W→ℓν boson at the DØ experiment. We investigate the dijet mass range between 110 GeV /c2 and 170 GeV /c2 and find no evidence for any resonant dijet production.

scholarly journals Search for a Structure in the Bs0π± Invariant Mass Spectrum with the ATLAS Experiment

2018 ◽  
Vol 120 (20) ◽  
Author(s):  
M. Aaboud ◽  
G. Aad ◽  
B. Abbott ◽  
O. Abdinov ◽  
B. Abeloos ◽  
...  
Keyword(s):  
Mass Spectrum ◽  
Invariant Mass ◽  
Invariant Mass Spectrum ◽  
Atlas Experiment

Contribution ofπ0and η Dalitz decays to the dilepton invariant-mass spectrum in1AGeV heavy-ion collisions

1997 ◽  
Vol 56 (6) ◽  
pp. R2920-R2923 ◽  
Author(s):  
R. Holzmann ◽  
M. Appenheimer ◽  
R. Averbeck ◽  
Y. Charbonnier ◽  
H. Delagrange ◽  
...  
Keyword(s):  
Mass Spectrum ◽  
Invariant Mass ◽  
Heavy Ion Collisions ◽  
Invariant Mass Spectrum ◽  
Heavy Ion ◽  
Dilepton Invariant Mass ◽  
Ion Collisions

scholarly journals Vub from the hadronic invariant mass spectrum in semileptonic B decay

1997 ◽  
Vol 406 (3) ◽  
pp. 225-231 ◽  
Author(s):  
Adam F. Falk ◽  
Zoltan Ligeti ◽  
Mark B. Wise
Keyword(s):  
Mass Spectrum ◽  
Invariant Mass ◽  
Invariant Mass Spectrum

OBSERVATION OF THE ABC EFFECT IN THE FIRST EXCLUSIVE MEASUREMENTS OF pn → dπ0π0

2007 ◽  
Vol 22 (02n03) ◽  
pp. 617-620 ◽  
Author(s):  
◽  
O. Khakimova ◽  
M. Bashkanov ◽  
T. Skorodko ◽  
C. Bargholtz ◽  
...  
Keyword(s):  
Mass Spectrum ◽  
Invariant Mass ◽  
Bound States ◽  
Fundamental System ◽  
Theoretical Models ◽  
Invariant Mass Spectrum ◽  
High Mass ◽  
Threshold Enhancement ◽  
Low Mass ◽  
Mass Enhancement

The reaction pn → dπ0π0 constitutes the most fundamental system for the study of the ABC effect - a puzzling threshold enhancement in the ππ invariant mass spectrum of the ππ system in double-pionic fusion to nuclear bound states. The first exclusive measurements of this reaction have now been carried out at CELSIUS-WASA. They exhibit a striking low-mass enhancement in the ππ invariant mass spectrum, prove it to be a σ-channel phenomenon and falsify conventional theoretical models, which predict an associated high-mass enhancement not present in the new exclusive data. In the kinematically complete data sample we observe a ΔΔ excitation, where the interaction between the two Δ obviously plays a crucial role for the generation of the ππ low-mass enhancement.

THE PROCESSES e+e−→W±H∓AND e+e−→H+H−IN SUPERSTRING INSPIRED EXTRA U(1) MODEL

1990 ◽  
Vol 05 (03) ◽  
pp. 501-514 ◽  
Author(s):  
USHA BHATIA ◽  
N.K. SHARMA
Keyword(s):  
Mass Spectrum ◽  
Invariant Mass ◽  
Cross Section ◽  
Polar Angle ◽  
Invariant Mass Spectrum ◽  
Thrust Axis ◽  
The Cross

We investigate the processes e+e−→W±H∓ and e+e−→H+H− in a superstring inspired model having an additional ZE. The cross section at Z2 resonance for e+e−→W±H∓ are considerably large, giving about a thousand events per day at LEP II energy for the planned luminosity. The invariant mass spectrum for l±vl obtained from W± decay is shown to be distinct and could be decisive in the detection of the process. The cross section for the process e+e−→H+H− is relatively small and may provide around five events per day for the envisaged luminosity. The dominant background problem caused by e+e−→W+W− in both processes may be reduced by applying appropriate cuts on the polar angle of the thrust axis.

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