ON THE DYNAMICAL FLUCTUATION OF SINGLE-EVENT TRANSVERSE MOMENTUM DISTRIBUTION

Assuming that the single-event transverse momentum distribution fluctuates event by event according to a distribution functional, we derive analytical expressions for both the variance of event-wise mean transverse momentum and the two-particle transverse momentum correlation. The relation between these two is discussed. An evaluation of statistical fluctuation is given. An exponential form for the single-event transverse momentum distribution is taken as an example to demonstrate our method for extracting event-by-event dynamical fluctuation of single-event transverse momentum distribution from experimental data.

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Production cross-section of heavy flavored hadrons in pp collision at s = 7 TeV

Modern Physics Letters A ◽

10.1142/s0217732319501505 ◽

2019 ◽

Vol 34 (19) ◽

pp. 1950150 ◽

Cited By ~ 6

Author(s):

Muhammad Ajaz ◽

Irfan Khan ◽

M. K. Suleymanov

Keyword(s):

Experimental Data ◽

Transverse Momentum ◽

Differential Cross Section ◽

Cross Section ◽

Momentum Distribution ◽

Cross Sections ◽

Production Cross ◽

Center Of Mass ◽

Transverse Momentum Distribution ◽

Mass Frame

The transverse momentum distribution of the differential production cross-sections of heavy flavored charm hadrons [Formula: see text], [Formula: see text] in pp collisions at 7 TeV are simulated. Predictions of DPMJETIII.17-1, HIJING1.383 and Sibyll2.3c are compared to the differential cross-section measurements of the LHCb experimental data presented in the region of [Formula: see text] and [Formula: see text], where the pp center of mass frame is used to measure the transverse momentum and rapidity. The models reproduce only some regions of [Formula: see text] and/or bins of [Formula: see text] but none of them predict completely all the [Formula: see text] bins over the entire [Formula: see text] range.

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SOME DISCUSSIONS INSPIRED BY THE FLUCTUATION OF SINGLE-EVENT pt DISTRIBUTION

International Journal of Modern Physics E ◽

10.1142/s0218301307009294 ◽

2007 ◽

Vol 16 (10) ◽

pp. 3323-3330

Author(s):

XU MINGMEI ◽

LIU LIANSHOU

Keyword(s):

Experimental Data ◽

Statistical Fluctuation ◽

Single Event ◽

Dynamical Fluctuation

Starting from the assumption that it is the single-event pt distribution, not only the event-wise Mpt , fluctuates E-by-E, we discuss the relation between the variance of Mpt and the two-particle pt correlation. An evaluation of statistical fluctuation is given. For an example, we use an exponential single-event pt distribution to extract E-by-E dynamical fluctuation of single-event pt distribution from experimental data.

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