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김재률,마경주,이진호,임사회,장지승,최준호,임인택,박명렬 한국물리학회 2003 새물리 Vol.47 No.6
The inclusive cross sections, including deep inelastic scattering, leptoquarks, and the deep inelastic scattering-leptoquark interference effect, which were calculated by using LQCS, are presented. LQCS is a fortran-based program to calculate the cross sections of leptoquarks by using the Buchmuller, Ruckel, and Wyler approach. Comparisons with the results from LQMGEN, the ZEUS leptoquark simulator, are discussed. The differences between the calculations from LQCS and LQMGEN are lower than 0.5 %. 표준모형 심층 비탄성 산란 및 렙토쿼크, 심층 비탄성 산란--렙토쿼크 간섭항을 포함하는 포괄 미분 산란단면적을 LQCS를 이용하여 계산하였다. LQCS는 Buchmuller, Ruckel 및 Wyler의 접근 방법을 이용한 렙토쿼크 모의시늉기로서 fortran을 기반으로 작성되었다. ZEUS 실험에서 사용되는 Doncheski 및 Hewett 접근 방법을 이용하는 렙토쿼크 모의시늉기인 LQMGEN과의 비교를 통해 0.5 % 오차내에서 결과들이 일치함을 확인하였다.
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김재률,김연경,마경주,박명렬,이미진,이진호,임인택,정인석 한국물리학회 2005 새물리 Vol.50 No.4
We estimate the deep inelastic scattering (neutral current events) cross sections, d=dx, and the proton structure function F2 by using dierent parton distribution function sets having dierent quantum hromodynamic evolutions. Also, we estimate the eect of the variations between the parton distribution function sets on the cross sections and on proton structure functions. In the region of x 0:5, neither the deep inelastic scattering cross sections, d=dx, nor the proton structure functions depended on the type of parton distribution function used for the estimate introduced by the choice of the parton distribution function set. 경입자에 의한 핵자의 깊은 비탄성산란(DIS) 연구는 핵자의 강입자적 하층구조를 이해하는데 많은 정보를 제공해 주고 있다. 핵자 내에서 파톤의 분포와 상호작용은 양자색역학(QCD)의 섭동을 통해 이해되며, 파톤들의 전개(evolution)는 중요한 역할을 한다. 본 논문은 서로 다른 QCD전개를 갖는 4개의 파톤분포함수 (PDF)를 이용해 전자-양성자 깊은 비탄성산란에서 양성자의 구조함수 F2와 Bjorken 스켈링변수 x에 관한 양성자산란단면적의 PDF의존성을 살펴본다.
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Comparison of the Energy Estimation Methods for the Neutral Particles in a Nuclear Emulsion Detector
김재률,임인택,박명열 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.48 No.3
In a nuclear emulsion detector, studies of the neutron emission from nucleus-nucleus diffractive scattering require energy information on emitted neutrons. An interaction that is produced by a neutral particle in a nuclear emulsion detector is identified by the tracks of the secondary charged particles without any incident particle track. If the emitted neutrons are produced by diffractive scattering, the neutron has almost the same energy as the incident projectile nucleus. The energy of the neutral particles produced by a nucleus-nucleus central collision is distributed according to a certain probability function and is different from the energy of the neutron emitted from diffractive scattering. Therefore, the energies of the neutrons give a way to determine clearly the emission ratio of neutrons from nucleus-nucleus diffractive scattering to neutrons production produced by nucleus-nucleus central collisions clearly.
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입자검출 지하관측시설에서 전기공급시설의 물리적 특성 고찰
김성현,김재률,김용성,김종언 한국물리학회 2010 새물리 Vol.60 No.8
입자검출 지하관측시설은 터널운용을 위한 일반전기시설과 PMT를 포함한첨단의 전자수집장치들을 위한 안정적인 전기시설이 필요하다. 본논문에서는 이러한 전원설비가 갖는 전기적 특성인 접지의 저항 및전기파형을 측정하여 터널의 전기물리적 환경을 논의하였다. The electric power system for our underground facility is divided into two systems, a general system to control the tunnel facilities and a special system to control the DAQ including PMT. The underground facility in Yonggwang has a general electric system to control the tunnel facility and a special electric system to control the DAQ system, including the PMT. In this paper, we discuss an upgrade to the electric stability of our tunnel by constructing the ground system and the electric voltage wave.
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吳國柱,金在律 全南大學校 師範大學 科學敎育硏究所 1980 科學敎育硏究誌 Vol.5 No.1
The concept of spontaneous symmetry breaking has proved to be extraordinarily fruitful in many areas of physics and we consider it worthwhile to try to incorporate it into gravitation. It is suggested that the same symmetry breaking mechanism is responsible for breaking a unified gauge theory into strong, weak, and electromagnetic interactions. 現在 unification의 核心은 spontaneous symmetry breaking 理論이므로 이 槪念을 간단히 略述하고, 다음은 重方場에 incorporate시켜 본다.
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The Tuning of the KEK-PS K2 Beam Line for the Hybrid-Emulsion Experiment
Ieiri, M.,Kim, J.Y.,Kim, T.I.,Song, J.S.,Park, I.G.,Chung, K.H.,Kim, C.O.,Park, J.N.,Bahk, S.Y.,Kim, S.K. 慶尙大學校 기초과학연구소 1988 基礎科學硏究所報 Vol.4 No.-
We have shortened the downstream part of the K2 beam line from the original design to raise the kaon yields for the requirement. A layout of the modified K2 beam line is shown in fig. I and the total beam length is 25.7m. Since the high beam flux is not required. Q5 which made the beam flux is not required. Q5 which made the beam achromatic at FF, is omitted. The drift length between Q5 and Q7 is adjusted, so that the total length becomes short and that the beam ellipse at FF satisfies the above condition.
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吳國柱,金在律 全南大學校 師範大學 科學敎育硏究所 1976 科學敎育硏究誌 Vol.1 No.1
Renormalizable gauge-invariant field theories with spontaneously broken symmety are being studied intensively in the hope of obtaining a correct unified description of electromagnetic and weak interactions. This proposed model has so far been worked out in detail only as it applies to the area of weak and electromagnetic interactions of leptons, and within this area involves the usual leptons, photons, a new massive scalar meson, charged massive vector mesons W, and a neutral massive vector meson Z. This paper will deal with the possible observable effects of the Z boson and charged massive vector bosons W in leptonic process.
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Indefinite Metric에 의한 Spin-3/2場의 量子化에 關한 硏究
吳國柱,金在律 全南大學校 師範大學 科學敎育硏究所 1978 科學敎育硏究誌 Vol.3 No.1
The general equation satisfied by a vector spinor field is considered and it is found that in addition to the spin solution there are two spin solution of arbitrary masses. Quantization of field of spin is carried out by decomposing them into simpler fields and using an indefinite metric.
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吳國柱,金在律 全南大學校 師範大學 科學敎育硏究所 1983 科學敎育硏究誌 Vol.8 No.1
Ⅰ. 序言 1 II. e+e- 충돌실험 2 Ⅲ. e+e- colliding beam으로부터 heavy lepton 3 Ⅳ. 結論 6
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중성미자 관측을 위한 물 체렌코프 검출기에서 물 투명도 측정
조성훈,김재률,임인택,장지승,최준호,김수봉,양병수,최영일 한국물리학회 2009 New Physics: Sae Mulli Vol.59 No.2
Measurement of water transparency is required in the case of large water cherenkov detector since that is directly related to the number of photons which reach to the photomultiplier tubes. In this paper, we propose the methode using the laser system that measures the absorption and scattering coefficient which directly affect to the attenuation length of light in water, and we confirm the possibility of this measurement through the Monte-Calro simulation. And we introduce the various studies using the laser system which measures the scattering angle, the absorption length and the position dependence in large detector. 물 체렌코프 검출기에서 물의 투명도는 광전자 증배관에 도달하는 광자의 개수와 직접적으로 관련되므로 대형 검출기의 경우에는 물에서 빛의 감쇠 길이의 실험적 측정이 요구된다. 본 연구에서는 물에서 빛의 감쇠 길이에 직접 영향을 주는 흡수계수와 산란계수를 레이저 시스템을 이용해 측정하는 방법을 제시하고 몬테카를로 시뮬레이션을 통해 흡수계수와 산란계수의 직접적인 측정의 가능성을 확인한다. 또한 산란각, 흡수길이 그리고 대형 검출기에서 예상되는 산란율의 위치 의존도의 측정 방법을 소개한다.
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